Why does my Mercedes Benz hesitate to accelerate?

-Air filter and throttle body are clean. -I haven’t changed the MAF in the 2 years that I’ve owned the car, and i tried running the car with the MAF unplugged; the problem was the same except now the idle was constantly low and rough. The problem is slowly getting worse. I’m contemplating ordering a new MAF or maybe a set of new coils..

Why does my car not accelerate when I start it?

Dirty or Damaged Mass Air Flow Sensor The most common cause of a car that won’t accelerate is a lean air-fuel mixture. The mass airflow sensor measures the air entering the engine, and the engine control unit is then calculating how much fuel should be injected into the engine.

Why does my car not accelerate when I press the gas pedal?

If it seems loose or the engine changes speed without accelerating or decelerating, the clutch is definitely the origin of the problem. 2. Problems With The ECU. An error in the electronic control unit (ECU) could also be the reason for your car won’t accelerate when pressing gas pedal. For example, a pollution error could trick …

Why does my Chevy Silverado not want to accelerate?

If the catalytic converter gets too clogged up, it’ll keep the motor from accelerating properly. It’ll “bog” after a certain speed. Maybe it’ll drive 20 miles an hour just fine, but after that it just doesn’t want to accelerate whatsoever. This can also be a sign that it’s not getting enough fuel as well.

Why does my car not accelerate when I press the accelerator?

If the TPS malfunctions, the engine speed cannot be controlled by the accelerator pedal and engine speed will increase or decrease without any press or depress the pedal. Report this ad #4 – Dirty or Clogged Fuel Filters A dirty or clogged fuel filteris another reason for a car not accelerating like it’s supposed to when required to do so.

What to do if your car is slow to accelerate?

I would recommend having your throttle body inspected by a qualified mechanic, such as one from YourMechanic to determine why your car is slow to accelerate. Explain your symptoms and have the mechanic drive the vehicle to verify the issue.

Who is the guy who fixes cars that won’t accelerate?

You want to make sure that you can get the right speed everytime you speed up or slow down. Tsukasa Azuma is an awesome car blogger of Car From Japan. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts.

What causes a Mercedes-Benz transmission to fail?

We see these transmission fail in rare cases when water enters the transmission via the oil cooling lines or the radiator on cars equipped with Valeo radiators. The top part of the radiator on your Mercedes-Benz contains the chamber for the engine coolant/antifreeze while the bottom part contains the chamber for the transmission oil cooling.

What to do when your car hesitates on acceleration?

I can quickly restore that cylinder by restarting the car while driving (by turning the key off then back to ignition quickly) and just like that the car goes from limper to normal, instantly! -I checked the spark plugs which were changed in the fall..

Is there a problem with the Mercedes possition sensor?

Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, SLK-Class may fail causing idle issues, no idle or poor acceleration. Symptoms of defective Mercedes throttle body or throttle position sensor include: A common problem that you may notice is that the car drives fine under normal acceleration.

Is there a problem with the throttle sensor on a Mercedes?

Why does my car hesitate when I take off?

1) a hesitation or stutter when accelerating from a full stop. the harder I accelerate the more it hesitates. but only on take off, as if it cant handle the sudden surge of gas. If i baby the pedal (and i mean really ease on it) from a full stop nothing happens.

What causes a transmission to jerk or hesitate?

Here are a few common reasons why your transmission may shift erratically, jerk or hesitate. Low fluid level. Depleted fluid frictional properties. Poor cold-temperature fluidity.

Why does my Buick Lucerne engine hesitate during acceleration?

A vehicle with a combustion (gas or diesel) engine requires an exact mixture of fuel and air to run efficiently. If this mixture is thrown off in any way, it may result in an engine running too lean (not enough air), or too rich (not enough fuel).

What causes the throttle possition sensor to stop working?

If you press the gas pedal to the floor or try to accelerate quickly or floor it, the engine stops responding, RPMs drop and it may even go into limp mode. Turn off the engine and restarting it usually fix the problem. In ost cases, the issue is caused by either a defective pedal position sensor or a bad throttle position sensor.

How can I tell if my Mercedes S430 air suspension is broken?

You can also give your Mercedes “bounce test.” Walk around to each corner of the car and push down hard on the bumper. If the car springs back up and settles immediately, that corner is fine. If it bounces up and down before settling, it’s time to replace that strut.

Why does my Mercedes S430 sag when coming to a stop?

The first is that the car sits unevenly or too low when parked. Sometimes this will mean one corner of the S430 is lower than others. However, the most common sign is when the rear of the Mercedes is sagging down. When coming to a stop, does your S430 “crouch” forward? If so, it means that at least the front air suspension is worn out.

Why does my car hesitate when I press the gas?

So when the stoplight turns from red to green, you punch the gas pedal, hoping to sail through the intersection a little, um, faster than usual. But instead of moving when you hit the gas pedal, your car hesitates. Juuust long enough for every car behind you to honk, flip you the bird, or angrily swerve around you.

What should I do about my Mercedes slk230 low idle problem?

Solutions will vary from vehicle to vehicle. This just happens to be a Mercedes SLK230 and the problem was the gas pedal position sensor, but other vehicles or even this vehicle may have the same symptoms but have a different solution. 1. Ignition coils 2. Coil wires and connectors 3. Egr vacuum switching solenoid valve 4.

When to replace the throttle possition sensor on a Mercedes Benz?

If you determine the throttle position sensor has failed on your Mercedes-Benz you will need to address this problem right away. In most cases, you will get code P0120 or P012x. Your options are to replace it with a new throttle position sensor.

What causes the throttle body on a Mercedes to fail?

When there are throttle body malfunctions the wrong amount of air enters into the engine causing problems with air/fuel mixture ratio. Here is a close up picture of a Mercedes throttle body. Mercedes throttle bodies made by Bosch and VDO may fail. Luckily these units are repairable.

How to reset adaptive shifting points on Mercedes Benz?

This procedure will reset the adaptive shifting points in your Mercedes-Benz automatic Transmission Control Unit (TCU). These simple do it yourself instructions take less than 5 minutes. No tools are required to perform this procedure and make your Mercedes-Benz shift like new. Try this if your car has been shifting sluggish recently.

What are the most common Mercedes Benz transmission problems?

Top 5 Mercedes-Benz Transmission Problems. Won’t come out of Park gear due to a defective brake light switch. ( DIY How to replace the Brake Light Switch) Continue to read if you would like to learn how to troubleshoot your Mercedes-Benz transmission yourself and where you should start. 1. Check Fluid Level

When did Mercedes Benz start using 5 speed transmission?

The 5-speed transmission that was used between 1995 up to 2008 is one of the best transmission ever built. Now let’s see if we can help you troubleshoot your transmission. By continuing to read this article you agree to use this information at your own risk. Top 5 Mercedes-Benz Transmission Problems.

Can a Mercedes-Benz have a transmission failure?

Very few Mercedes-Benz cars have had complete transmission failure and require transmission replacement. We see these transmission fail in rare cases when water enters the transmission via the oil cooling lines or the radiator on cars equipped with Valeo radiators.

How long does it take to shift a Mercedes Benz?

These simple do it yourself instructions take less than 5 minutes. No tools are required to perform this procedure and make your Mercedes-Benz shift like new. Try this if your car has been shifting sluggish recently. This will make your car fun to drive again, it’s like getting a free tune-up.

What causes a Mercedes Benz to not start?

In most cases you will get a fault code related to one of the following: 1 ECM / PCM computer failure 2 Camshaft position sensor 3 Shifter Selector module 4 Fault codes related to driver authorization or immobilizer 5 Electrical problems

What are the problems with a Mercedes Benz?

Top 5 Mercedes-Benz no start problems 1 Engine Click, No Start 2 Engine Dies Right After It Starts 3 Car turns over, but it won’t start 4 The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery 5 Key will not turn the ignition More …

Why is the battery on my Mercedes Benz not working?

Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars. How old is the battery on your Mercedes-Benz?

How do you reset the throttle on a Mercedes?

First, try throttle reset procedure Turn the key to ON position. Position II that is. Press and hold the gas pedal for at least five seconds. Keep the pedal pressed. Turn ignition off but do not remove the key. Now release the gas pedal. Remove key. Wait a minute before you restart your Mercedes.

Why does the transmission of my car hesitate?

Here are a few common reasons why your transmission may shift erratically, jerk or hesitate. There’s an old adage when troubleshooting: start with the least expensive and simplest fix. In this case, check the transmission fluid level first. Low fluid can prevent the transmission from shifting properly.

What to do when your Mercedes goes into limp mode?

You may also get a check engine light if your transmission goes into limp mode. When a Mercedes-Benz goes into limp mode, it only operates in second gear and reverse only. When you put it in gear, you may also feel a bang as transmission engages. The first thing you should try is to check the transmission fluid level.

What does it mean when a car engine hesitates?

This is what it means when the car engine hesitates. It is usually the result of a problem with the air and fuel mixture within the combustion chamber. However, there is a long list of other reasons which could be the cause of this hesitation problem too.

What causes a car engine to stop working?

Repair or replace any hoses which are causing the leak. If any of the components in your fuel system stop working correctly, like your fuel injectors, fuel pump, or fuel pressure regulator, then your engine won’t get the proper amount of fuel it needs for combustion.

Why does my Mercedes C230 stall when I idle?

Folks I have a 1997 C230 Mercedes, This seems to be having the same problem, but when it Idles it runs rough and when driving it is stalling out but will re-start. I had the codes checked, came up with bad cam sensor. I replaced it as well the MAF.

What kind of problem does a Mercedes C230 have?

21 people found this helpful. Folks I have a 1997 C230 Mercedes, This seems to be having the same problem, but when it Idles it runs rough and when driving it is stalling out but will re-start. I had the codes checked, came up with bad cam sensor.

Is there a problem with the Mercedes 320 CDI?

Over the past six months, we have had on and off problems with our ML 320 CDI with approx. 45.000 KM during 3/4 to full acceleration. The ML would start to go and then “studder” several times, until you let off the gas. Also, a few times while driving on the highway, it went into a sort of limp mode, where max speed was 80 or 100 kmH.

What’s the problem with the Mercedes ML 320?

The ML would start to go and then “studder” several times, until you let off the gas. Also, a few times while driving on the highway, it went into a sort of limp mode, where max speed was 80 or 100 kmH. We would pull over, turn off, restart and problem solved. Never a warning light.

What happens if your ECU is not working?

There might be some even more serious problems if your ECU is acting strangely. Not only that your car might have problems with acceleration, but also, it might experience sudden break downs as well. All in all, ECU might be the most serious and the most common problem that can happen to your car.

Why does my car lag when I accelerate?

If any of the components in your fuel system stop working correctly, like your fuel injectors, fuel pump, or fuel pressure regulator, then your engine won’t get the proper amount of fuel it needs for combustion. This will cause your engine to lag, stumble, or hesitate.

What causes car engine to hesitate when accelerating?

The exhaust gas recirculation valve, or EGR valve, may be damaged and causing a leak. This is known to cause engine hesitation problems, so it should be addressed. If you are using bad fuel which is has been sitting in your tank for too long or is too low of an octane for your engine, it can cause many different problems.

When do you Know Your Car is not accelerating?

The symptoms that your car is not accelerating the way it used to may occur to any vehicle. You may not notice the problem on regular days along the usual routes but they become clear when you decide to drive up a steep hill or accelerate to move into the fast lane.

What to do if Mercedes check engine light is on?

1. Turn ignition to position II. All dash lights should be on. Don’t start the car. 2. Locate the OBD-II port under the dashboard. Location of OBD II port used to retrieve Mercedes-Benz fault codes. 3. Plug your OBD II scanner and let it turn on. Use an OBD II scanner to check why the Check Engine Light is ON.

How to diagnose an engine misfire on a Mercedes?

To diagnose an engine misfire on a Mercedes all you need is a generic OBD II code reader that can be bought in some cases for under 20 at your local auto parts store or on Amazon’s Best Selling OBD II scanners list.

Can you erase a fault code on a Mercedes Benz?

Can clear fault codes. Can read and erase all fault codes on Mercedes-Benz cars. Only works on MB but can perform further troubleshooting including SBC brake systems, convertible systems, Air Conditioner (A/C) system. 3. Mercedes-Benz Star Diagnostic DAS This is diagnostic scanner used at Mercedes-Benz dealerships.

What to do if your Mercedes possition sensor is not working?

Don’t start the car. Press and hold the gas pedal for at least five seconds. Keep the pedal pressed. Turn ignition off but do not remove the key. Now release the gas pedal. Remove key. Wait a minute before you restart your Mercedes. This allows resetting the High and Low points of the gas pedal.

Why does my Bert Rowe Mercedes not start?

This car will not start if the battery is sub standard/defective going to the starter motor, this will at least confirm that power is reaching the cable feed to the starter motor, if no power is recorded on the meter then I would consider the starter cutout relay suspect.

What happens if you jump start a Mercedes Benz?

The problem is frequently a dead battery. Improper jump starting a Mercedes-Benz can cause electrical or control unit problems which can become expensive repairs. In this guide, we will show you different methods that you can safely jump start your car and get back on the road.

What to do if your Mercedes Benz wont start?

Get inside your Mercedes-Benz and start it. If it doesn’t start right away, let the battery charge for at least 5 minutes, or even longer if you can. If your Mercedes-Benz refuses to start, see the Troubleshooting FAQ section below. Once the car starts, disconnect the cables. Begin by disconnecting the negative battery cables on both cars.

Why is my Mercedes Benz gear shift stuck?

Gear shift stuck is one of the most common problems with Mercedes-Benz cars. Unfortunately, looking to see if the brake lights turns on while you press the brake pad, is not a good test to tell if the brake light switch is working properly.

What happens when a Mercedes Benz goes into limp mode?

When a Mercedes-Benz goes into limp mode, it only operates in second gear and reverse only. When you put it in gear, you may also feel a bang as transmission engages. The first thing you should try is to check the transmission fluid level. The transmission has a dipstick tube but with no dipstick in it.

Are there any problems with the Mercedes transmission?

Including Engine, Transmission, ABS, Airbag, SRS, SBC Brakes, ESP, EPS, Air Suspension and more. In depth troubleshooting, but only works on MB cars. 2. Launch Creader X431 VII works in European, Asian and Domestic Cars.

What causes engine spluttering in a 2002 MBZ C320?

I have been experiencing intermittent engine spluttering (2002 mbz c320) – The licensed MBZ service guys I paid to diagnose said they couldn’t find anything ???? Then only the other day I was at the intersection, in idle, and put my foot on the accelerator to go, but it was completely unresponsive.

Why does my Mercedes Benz engine misfire so often?

Engine misfires are one of the most common problems we see in many Mercedes-Benz cars. To be honest, it is not because MB cars are weak in this area, but because most owners forget that spark plugs are wear items and need to be replaced at the recommended intervals.

What happens when catalytic converter is clogged in Mercedes?

If your catalytic converter is clogged you will notice a drastic drop in fuel efficiency and real struggle getting your Mercedes to accelerate. If the cat is completely clogged your car won’t even start.

Why does my Mercedes hesitate at a light?

2) when stopped at a light the idle is perfectly fine and steady except for these sudden dips in rpm and the engine rumbles/shakes, then back to normal. these dips are very random and don’t last more than a second. 3) when in reverse these same dips in rpm and shaky engine get more intense and more constant.

What causes engine to hesitate at 20 degrees?

If the timing is adjusted too far retarded (behind the timing mark) in relationship to the engine crankshaft it will cause hesitation. If the engine timing is way off (20 degrees or more) check the timing belt or timing chain, the crankshaft/camshaft correlation.

Why does my car hesitate when I press the clutch?

Step 10 – The clutch is designed to release the engine from the transmission, when this part wears it can cause a hesitation in the motion of the car. To test this condition drive the car at a steady speed, then very lightly tap the clutch pedal, if the car responds the clutch is worn.

What happens when a Mercedes engine misfire occurs?

As soon as an engine misfire occurs on a Mercedes-Benz, you will notice poor engine performance and strange vibrations that in some cases can be felt even in the driver cabin. The first thing that comes to mind when you get an engine misfire is: “This is going to be expensive.” Take a deep breath because in most cases it doesn’t have to be.

Why does my Mercedes Benz make a clicking noise?

It requires electrical power to crank the engine. The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars.

What should I do if my Mercedes Benz won’t start?

Start the car and you should be able to get around 60 psi. When the engine is running and when you turn off the engine the pressure should stay steady. Always perform this test on a cold engine. Next, make sure that the fuel injector connections are secure and not loose. Check the fuel pump and the fuel pump relay.

Is there a problem with my SLK 230 R170?

Hi I have recently had a ‘No Start No Crank’ problem with my SLK 230 R170. This happens when the key is turned on and all the dashboard lights show but the engine will not turn over. I did some research on this problem and it appears that this is a common fault with this model and there is a simple fix which can be found on You Tube

Why is my SLK 230 no start no crank problem?

To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information. Please try again later. Hope this is of interest. Did you clean all 5 connecters before you plugged them in?

When do Mercedes Benz motor mounts start to loose fluid?

CAUTION: Make sure no one is standing on the front or back of the car when you perform this test. Mercedes-Benz motor mounts are fluid filled instead of rubber mounts that are used on most cars. Mercedes-Benz the engine mounts start to loose fluid around the 100k mile mark.

When does vibration start in a Mercedes Benz?

Mercedes-Benz the engine mounts start to loose fluid around the 100k mile mark. Once a crack develops on the motor mount, they loose all the fluid over time and the vibrations get worse. Mercedes cars have three mounts.

Why does my car hesitate when I start the engine?

How to fix engine hesitation when the throttle is depressed?

Step by step guide on how to repair an engine hesitation when the throttle is depressed, this information pertains to all internal combustion engines. Protective eye wear and gloves. Begin by parking the vehicle on level ground, in park with the emergency brake on.

How many miles does a Mercedes spark plug last?

They are wear and tear items. Standard copper spark plugs last up to 30k miles while iridium and platinum spark plugs can last over 60,000 miles. If your Mercedes-Benz has over 80,000 miles and still has the original spark plugs, it makes sense to change the spark plugs before you pour money on any other repair.

Why does my Bas light come on in my Mercedes Benz?

To reset the lights, start up your Mercedes-Benz and turn the steering wheel all the way to the right, then all the way to the left. Do this a couple of times. Turn off the engine. Restart. Brake Light Switch may cause BAS / ESP / ABS light to come on. It is the most common problem with Mercedes-Benz cars.

Why is the battery draining on my Mercedes medic?

If the car is left parked in high pedestrian traffic areas this could be a problem. It may cause the battery to drain within a couple of days in some models. Try to turn off the proximity key function in your car by looking up the instructions on the owner’s manual.

How does the proximity key work on a Mercedes medic?

Proximity key allows you to walk up to the car and unlock the doors while the key is still in your pocket. A radio receiver in the car continuously listens for wake up signal from the key. As the car receives a signal in the assigned frequency it wakes up to validate the key.

Are there any common problems with Mercedes SLK?

i think its more related to the “type ” of slk he is looking at. for instance some common issues for slk may be. top issues ie: hydraulic cylinders leaking seals cracking hinges stiff. brakes and services performed. slk32 issues are intercooler pump, lower a arm bushings.

Are there any common problems with Mercedes Benz?

1. Interior peeling 2. Vibration 4. MAF Sensor what do you guys think? do you consider those as common? 32krazy! brakes and services performed. ithink all of these issues are just quirks of the cars built. with forums like this it appears all these issues are small and fairly easy to fix.

What kind of roof does a Mercedes SLK350 have?

I have a 2012 SLK350 that I purchased with a solid roof. The roof warped and began to leak so I took it to MB to be repaired. They ordered a new roof and when I picked up the car, the new roof had what appeared to be a tinted glass square in the center.

How to change the fluid in a SLK?

Look in the w210 forum for 722.6 sticky, how to change the fluid – look at post by Yumling for optimal fluid change, quantity and type of fluid, etc. Type of fluid especially important! You also have to buy or make a dipstick. It does not stay in place, but is only used to measure the level.

What causes a car engine to stall after starting?

Engine stalling shortly after starting. The engine hesitates or drags while under load or idle. Hesitation and jerking during acceleration. The engine hiccups. Excessively rich or lean idling. A sensor that has been contaminated by fuel, varnish or dirt will under report airflow.

Why does my Mercedes diesel engine not start?

However, if the engine is not running correctly automatic regeneration will not be started. Some of the possible causes are a faulty temperature sensor, swirl flap motor or EGR valve. Also, make sure you only use approved engine oil. Wrong engine oil can cause excessive soot build up.

When does the engine stall in a Mercedes?

There are never any notifications on the dash or any signs of it beginning to fail. This typically happens when I’m slowing down at an intersection or just driving slower in traffic.

Is there such a thing as a random engine stall?

Random Engine Stall, decreasing idle too… I have a 2002 C240 and I’ve recently had an issue while driving. I’ve read similar posts to this one but someone always writes their own issues that are different from this matter.

Why does my engine hesitate when I Turn on the engine?

The exhaust gas recirculation valve, or EGR valve, may be damaged and causing a leak. This is known to cause engine hesitation problems, so it should be addressed. 10) Bad Fuel If you are using bad fuel which is has been sitting in your tank for too long or is too low of an octane for your engine, it can cause many different problems.

How do you reset the gas pedal on a Mercedes?

Press and hold the gas pedal for at least five seconds. Keep the pedal pressed. Turn ignition off but do not remove the key. Now release the gas pedal. Remove key. Wait a minute before you restart your Mercedes. This allows resetting the High and Low points of the gas pedal.

How to troubleshoot Mercedes Benz air suspension problems?

Learn how to troubleshoot Mercedes-Benz Air Suspension Problems. You decide to buy a Mercedes-Benz, maybe an S-Class, CLS-Class, R-Class, CL-Class or E-Class. One day you hear of other Mercedes-Benz owners having suspension problems. The next day you start having air suspension problems yourself.

Why does my Jeep Compass hesitate to accelerate?

An engine that is hesitating to accelerate is most likely dealing with a fuel/air mixture that is too lean. Engine’s that are running inefficiently will begin to show signs like hesitation which will only become worse over time. If you notice some symptoms like hesitation, you should have your vehicle inspected immediately.

Why does my Mercedes C class idle all the time?

This upset the vacuum lines that depend on a vacuum to maintain a steady idle. Check for vacuum leaks with a smoke generator injecting smoke into any vacuum line and see where the smoke comes out. That’s a leak that needs to be plugged.

Why does my AC keep running past the set point?

Especially if you have older ductwork in your building, you may be losing cool air through leaks in the ducts. The joints may not be sealed, or the insulation may be gone. If enough cool air escapes, the temperature in your space never reaches the set point and the system will keep running.

What to do if your air conditioner is running constantly?

If your unit is blowing warm air from the supply vents in addition to running constantly, it may have frozen up. Turn the air conditioner completely off, and call in a professional right away to diagnose the cause and prevent further damage to the system.

Why does my AC always run but never deliver?

However, if your AC is always running but you’re never comfortable, that’s a clear sign of a problem that needs to be fixed. Here are 4 common causes of an AC that constantly runs and never delivers.

When to press and let go of the clutch?

You need to be able to feel when it’s time to press and let go of the clutch, and when to upshift or downshift. If you miscalculate, you’ll experience a jerk as you accelerate or decelerate. This usually occurs if you abruptly release the clutch pedal after changing gears or you shift to another gear with a half-depressed the clutch. 2.

Why does my car lose power when I press the accelerator?

When you press the accelerator, it sends more fuel through the filter and not as much can get through. Also, a dirty fuel filter is a common reason why your car is blowing white smoke and losing power. The dirt in the cylinders is burned along with the fuel and this causes smoke to come out of the exhaust.

What causes a car to stumble on acceleration?

Other problems that cause acceleration stumble include vacuum leaks, low fuel pressure, a weak spark caused by low coil voltage or bad coil (s), retarded ignition timing, and contaminated gas. Look at the following with your scantool (as shown in Figure 7): throttle position, mass airflow (MAF),…

When do I feel like my car is losing power?

You will notice this especially when you go on a long road trip or use a city car on open roads. If you are overtaking while going uphill and have the air conditioning on, you will notice how the engine can feel like it is losing power. There is no need to worry.

Why is my ML 270 CDI losing power?

My ml 270 cdi 2003 has just started to loose power (sound familiar!) – but not all of the time. When you drive off in the morning the car works fine if you put your foot down you can feel the car accelerate and hear the turbo kick in with the engine revving past 4000 rpm.

What happens when you loose power on a Mercedes Benz?

However, after about 20 min when the car has warmed up it suddenly looses power feeling very sluggish not revving beyond 2500 rpm even with your foot to the floor (almost like limp home mode but without any warning light). This makes it slow to go uphill or overtaking when you need the power.

What’s the top speed of a Mercedes Benz ml270?

Boot to the floor, but no signifigant response, very very slugish to accelerate of climb, and topped out around 75mph. Stopping the car, turning off, and restarting it would temporarily clear the prob, only for it toi reoccur after 10 or 15 mins.

Why does my W211 CDI have no acceleration?

2005 W211 CDI w/50k miles. I had posted about it having a surging of power at low load and a few thought it to be the EGR valve. Well, today I drove in to work and she had NO acceleration at all.

What does it mean when your O2 sensor is inactive?

This is normal. If the signal received from rear (#2) O2 sensor indicates that the voltage has “stuck” between .425V to .474 V, the PCM determines this sensor is inactive and this code will set. Your check engine light (CEL), or malfuction indicator lamp (MIL) will be illuminated.

What causes lack of acceleration in a Mercedes?

Symptoms include lack of acceleration when you press the gas pedal or vehicle trying to stall. The fuel pump is not providing the required fuel pressure to keep up with the engine demands. Mercedes may jerk during acceleration from a stop. Happen when you hit the gas pedal to the floor.

Why does my engine hesitate during acceleration ( cel )?

Check the Manifold Absolute Pressure (MAP) Sensor If a bad sensor is causing your hesitation issue, it may (or may not) trigger the check engine light (CEL). So, before you begin any diagnostic procedure, it is a good idea to scan the computer memory for trouble codes that can help diagnose the problem.

2005 W211 CDI w/50k miles. I had posted about it having a surging of power at low load and a few thought it to be the EGR valve. Well, today I drove in to work and she had NO acceleration at all.

What does clean start mean on a Mercedes 103?

Begin with the “back end” fuel delivery system first. For many owners of 1984 to 1995 102 (4 cyl gas) 103 (6 cyl gas singe cam) and 104 engined Mercedes (6 cyl gas twin cam), clean starts are becoming a fading memory. By “clean start” I mean the engine starts quickly, stays running, and drops down to a consistent and smooth idle.

Why is my gas engine so slow to start?

When the engine is shut off the spring chamber holds pressure in the fuel system. When the accumulator fails you may hear excessive pump noise and experience “dirty” hot starts after the engine has sat for 5 to 30 minutes. To view or purchase any of these items see related products.

What are the most common problems with a Mercedes?

It is the associated parts that usually fail due to age and high mileage Unknown battery drain, electrical shorts, blown fuses – these can be difficult to isolate! One of the most common problems we see on older Mercedes. Top problems for diesel owners. Kent recommends starting with the basics Yes, Kent has seen it first hand. Don’t neglect this!

Can you reset the transmission on a Mercedes Benz?

This will make your car fun to drive again, it’s like getting a free tune-up. This procedure applies to all Mercedes-Benz that come with the 5-speed 722.6 and 7 -speed 722.9. This is about 95% of Mercedes-Benz cars on the road today with the exception of models made before 1995. This reset procedure works on automatic transmission only.

Why does your car hesitate when accelerating from a dead stop?

In essence, delay or hesitation of the engine during acceleration happens when the engine does not get enough power, and it needs more power to accelerate from a dead stop than when maintaining the speed of a moving vehicle. The engine generates power by creating combustions in its chamber.

The lagging could be the result of the pump being worn out or needs a fix. It is a plunger rod with a rubber sealed piston that squirts a small amount of raw gas into the carburetor. The surge of fuel and air trigger the engine to be more responsive to acceleration.

Can a clogged fuel filter cause delayed acceleration?

A clogged fuel filter can cause delayed acceleration or difficulty driving uphill. Source: BMW Blog The fuel filter is located in the fuel tank on most newer vehicles, and will require a trip to the shop for inspection if you’re not familiar with handling it.

Why is my Mercedes-Benz transmission not shifting?

If cracks develop between the two chambers, coolant will mix with transmission oil and it will destroy the transmission. This has been a well-documented issue for Mercedes-Benz cars equipped with the Valeo radiators.

Navigation