What happens if you change the idler pulley on a Mercedes Benz?
Changing the idler pulley on a Mercedes-Benz is a relatively easy job for most DIYers and required less than two hours. A bad idler pulley can cause the serpentine belt to come off. Once the belt comes off, you will experience multiple problems if you continue to operate the vehicle. Power steering is difficult to turn.
What does it mean when your engine idle does not increase?
Use the command in the scan tool to increase the engine’s idle. If the engine idle does not increase, it means there is an issue at the idle control motor of its circuit preventing the signal from changing the idle. You can purchase a bidirectional scan tool at your local auto parts store.
How can I tell if my idle control motor is working?
Look for a difference in idle speed. Allow the engine to run for a minute so it settles to a consistent idle, then take note of any difference in the idle RPMs versus the idle you observed earlier. If the idle has not changed at all, it’s likely because your idle control motor has not been functioning.
What are the common problems with Mercedes diesels?
Here are some common problems that affect many Mercedes-Benz diesel models including E350, ML350, GL350, R350, Sprinter, R320 CDI and BlueTec models. Common problems Diesel Particulate Filter. As Mercedes DPF traps and holds soot, with time it reaches a point when it needs to be ‘emptied out’. This is done by regeneration.
How do you adjust the idle speed of an engine?
They use several designs, but most work in a similar manner. On early vehicles, General Motors often uses a stepper motor that turns a thread valve. Rotation of the armature moves the air valve in and out, adjusting the idle speed of the engine. The older Ford products more often use a spring-load plunger for the idle control valve.
Changing the idler pulley on a Mercedes-Benz is a relatively easy job for most DIYers and required less than two hours. A bad idler pulley can cause the serpentine belt to come off. Once the belt comes off, you will experience multiple problems if you continue to operate the vehicle. Power steering is difficult to turn.
What does it mean when your engine idle is too low?
If your idle is too low, it could be the IAC not talking to the computer correctly. Disconnect the IAC connector for a couple seconds while your engine is idling. If your engine idle didn’t change, you can suspect it to be the IAC. If it is working properly, unplugging it would cause your idle to freak out.
Look for a difference in idle speed. Allow the engine to run for a minute so it settles to a consistent idle, then take note of any difference in the idle RPMs versus the idle you observed earlier. If the idle has not changed at all, it’s likely because your idle control motor has not been functioning.
Is the AC always on on an e320?
An expert who has achieved level 1. Visited the website for 3 consecutive days. An expert that has 1 follower. Visited the website for 2 consecutive days. 2004 E320 AC is always on and heater does not work. Please help. You can’t post conmments that contain an email address.
Can a bad idler pulley cause a belt to come off?
A bad idler pulley can cause the serpentine belt to come off. Once the belt comes off you will experience multiple problems if you continue to operate the vehicle. At the early stage indicating that the idler pulley is failing, you will only hear a squeaky noise coming from the front of the engine.
Can you post conmments for 2004 e320 heater?
You can’t post conmments that contain an email address. An expert who has achieved level 1. Visited the website for 3 consecutive days. An expert that has 1 follower. Visited the website for 2 consecutive days. 2004 E320 AC is always on and heater does not work.
What to do if your Mercedes idler pulley fails?
Always verify by inspecting the bolt on the center of your idler pulley. Park your Mercedes-Benz in an area where you can work. If the idler pulley failed while driving, it is possible to change it on the road. You need to make sure you are working in a safe area. Allow the engine to cool down for at least 30 minutes.
An expert who has achieved level 1. Visited the website for 3 consecutive days. An expert that has 1 follower. Visited the website for 2 consecutive days. 2004 E320 AC is always on and heater does not work. Please help. You can’t post conmments that contain an email address.
Who is the Mercedes mechanic for the E320?
Answered in 1 minute by: 3/29/2012 Mercedes Mechanic: Marty, Mercedes Technician replied 9 years ago Marty, Mercedes Technician Category: Mercedes Satisfied Customers:57,141 Experience: Bosch Certified Master Tech. Over 35 years experience. Verified eurotec :
How many volts does the E320 compressor have?
Related Mercedes Questions 2002 Mercedes E320 compressor had 12 volts but won’t engage. 2002 Mercedes E320 compressor had 12 volts but won’t engage . read more
What should the torque be on a Mercedes tensioner?
Torque the tensioner bolts to the recommended manufacturer specifications. Typical torque for the tensioner bolts ranges between 25Nm to 35 Nm. Check with your dealer. Install the drive belt. Make sure it is routed on all the pulleys properly. If the belt does not reach, make sure it is not sitting on top of one of the pulleys.
Do you need to replace the Mercedes belt tensioner?
In this guide, you will find step-by-step instructions on how to replace the Mercedes-Benz belt tensioner. While it is not required to replace the drive belt, it makes sense to replace it simultaneously as the tensioner. It is ok to reuse the old belt if it does not show wear, cracking, degradation, or drying.
Do you need a Torx socket for a Mercedes idler pulley?
This is common on M112 and M113 engines from 1997 to 2007. Newer Mercedes-Benz idler pulleys (on M272 and M273 and newer models) require a Female Torx socket. Always verify by inspecting the bolt on the center of your idler pulley. Park your Mercedes-Benz in an area where you can work.
Which is the belt tensioner on a B200?
There is just no room to stick your hand near the belt tensioner. There must be some trick to it. Which B200 is it, 245
How to replace serpentine belt on Mercedes B200?
In any case the first instruction is to lower the engine with front axle carrier, meaning a lot of work if you cannot find a shortcut. These cars do not have a lot of space to work with the engine unless more room is arranged by lowering the engine. Click to expand… MY B200 is 233 – 2L petrol, non turbo engine.
Can you change the belt on a B200?
MY B200 is 233 – 2L petrol, non turbo engine. it seems to be a lot of work to change a belt, if you need to lower the engine and front suspension. Are there any shortcuts around it?
A bad idler pulley can cause the serpentine belt to come off. Once the belt comes off you will experience multiple problems if you continue to operate the vehicle. At the early stage indicating that the idler pulley is failing, you will only hear a squeaky noise coming from the front of the engine.
This is common on M112 and M113 engines from 1997 to 2007. Newer Mercedes-Benz idler pulleys (on M272 and M273 and newer models) require a Female Torx socket. Always verify by inspecting the bolt on the center of your idler pulley. Park your Mercedes-Benz in an area where you can work.
What’s the best way to replace an idler pulley?
You can use a nail or a 5mm Allen wrench as a pin. Slide the serpentine belt off the idler pulley. It is not necessary to remove the serpentine belt completely unless you are replacing it. Use a flathead screwdriver to remove the dust cap on the center of the idler pulley.
What happens if you have a bad idler pulley?
A bad idler pulley can cause the serpentine belt to come off. Once the belt comes off, you will experience multiple problems if you continue to operate the vehicle. Power steering is difficult to turn. The alternator stops working and no longer charges the battery. Air Conditioner stops working. Engine stalls once the battery is drained.
What do you use to loosen a Mercedes crankshaft pulley?
You will need to use Mercedes harmonic balancer tool to hold the crankshaft pulley in place as you loosen up the 27 mm bolt. You will use the harmonic balancer tool to keep the crankshaft from turning. Next, use a 27 mm socket on the bolt to loosen it up.
You will need to use Mercedes harmonic balancer tool to hold the crankshaft pulley in place as you loosen up the 27 mm bolt. You will use the harmonic balancer tool to keep the crankshaft from turning. Next, use a 27 mm socket on the bolt to loosen it up.
How to troubleshoot your Mercedes Benz air conditioner?
Identify the location of your compressor. Look at the pullyer and you should be able to see if it spining or not. The engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. The pulley spins any time the engine is running. The center part of the A/C pulley only engages when the A/C is on.
How to recharge Mercedes-Benz air conditioner-Easy Steps?
How to recharge A/C (air conditioner) system on your Mercedes-Benz. This video will show a quick and affordable way to top off your A/C system and get it blowing cold air again. One of the highest ranking A/C refrigernats also has a sealer that should not damage the A/C system. AC Recharge Kit Recomended: https://www.amazon.com/ACP-100-Profes…
What happens when you charge the AC in a Mercedes?
If the refrigerant level is very low, the AC compressor will not engage. Charge the AC system for a couple of minutes with the engine running, and you should notice the AC compressor engage / kick in once you add enough refrigerant into the system.
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.
Why is the air conditioner on my Mercedes not working?
The hot summer days are here and you realize that the air conditioner on your Mercedes-Benz is no longer blowing cold air. A/C problems can be complicated but it also can be something as simple as the system being low on freon. This is usually one of the most common problems.
How long does it take to recharge Mercedes Benz air conditioner?
This video shows how to recharge the air conditioner on your Mercedes-Benz. Charging the system with a refrigerant charging kit can take between 5 to 10 minutes depending on the system capacity. Before we begin, remember: These instructions may vary depending on the AC recharge kit that you are using.