Why does my Mazda 626 idle so rough?
The problem began about a month and a half ago when it started getting colder, I live in the East coast. In the mornings, when I initially turn on the car to warm it up, it doesn’t feel as bad. Once the car is warmed up though it begins to idle and feel very rough.
Can a timing belt change cause rough idle?
Just throwing a possibility out there simply because it has been known to happen before.
What to do if your Mazda 626 has a leak?
Check all the vacuum lines, and make sure they are in good shape and connected properly. Check the PCV hose and lines also. In addition, check the large air intake hose from the Air Flow Meter to the intake manifold for cracks and leaks. They often crack in the valleys and are hard to spot.
When do you change the timing belt on a car?
Last week, we had the timing belt changed by a mechanic I’ve gone to for the past four years and trust a great deal. He changed the timing belt, drive belts, water pump, pulleys, tensioner and a few hoses, and everything seemed to go off without a hitch.
What should the ignition timing be on a Mazda 626?
The ignition timing can be thrown off by normal everyday driving. You should routinely check and correct the ignition timing on your Mazda 626 to keep up with the maintenance of your car. The ignition timing for the 2002 Mazda 626 is in a range from 6 to 18 degrees, and can be adjusted with a few tools and mechanical skills.
The problem began about a month and a half ago when it started getting colder, I live in the East coast. In the mornings, when I initially turn on the car to warm it up, it doesn’t feel as bad. Once the car is warmed up though it begins to idle and feel very rough.
Check all the vacuum lines, and make sure they are in good shape and connected properly. Check the PCV hose and lines also. In addition, check the large air intake hose from the Air Flow Meter to the intake manifold for cracks and leaks. They often crack in the valleys and are hard to spot.
What was the year of the Mazda 626?
The Mazda Capella was commonly known in markets outside Japan as the Mazda 626. The Mazda 626’s sixth-generation was built on the GF platform and released in 1997 for the 1998 model year. My 2002 Mazda 626 car shakes alot.
What kind of air control does a Mazda 626 have?
Quick testing procedures for the infamous Mazda Idle Air Control (IAC) valve also known as the Bypass Air Control (BAC) valve. This test will work on ALL engine/trans configurations on the 1993-1997 626/MX-6/Probe.
Where did I buy a 2001 Mazda 626?
I purchased a brand new Mazda 626 LX 2001 model on August 19, 2001 at magnussen’s Ford/Nissan/Mazda dealership in newark ca. Little did I know, I bought a lemon!!!!! I returned the vehicle numerous times and telling the service dept people that the transmission was slipping and overrunning in gear.
What’s the price of a 2002 Mazda 626?
The Mazda 626 is a sedan. Inventory prices for the 2002 626 range from $1,724 to $6,500. It gets EPA-estimated 24-29 MPG combined. No listings at this time. Get the latest resale value.
Is it normal for a Mazda 3 to idle at 750?
The car is suppose to idle at 750. That is normal for it. 1k seems really high except for on a cold start. But once it is warmed up it should be at 750. now 500 is way to low and will stall you out. Have you checked your MAF wires? One or more of them may be pulled. Also, have you tried running some fuel system cleaner through your car?
Why is my Mazda 3 2.3 not starting?
I recently started noticing that my Mazda 3 2005 2.3 was not starting as enthusiastically as it used to. I ended up changing out the battery just cuz I haven’t changed it in almost 5 years.
Why is the idle not working on my Mazda 626?
If the idle smooths out, you have an EGR valve control problem. If not, try tapping the EGR valve and see if it shuts. You can reach under the EGR valve and manually push the diaphragm up and down to see if it makes a difference. You may have to remove the EGR valve completely to check it.
The car is suppose to idle at 750. That is normal for it. 1k seems really high except for on a cold start. But once it is warmed up it should be at 750. now 500 is way to low and will stall you out. Have you checked your MAF wires? One or more of them may be pulled. Also, have you tried running some fuel system cleaner through your car?
Why does my Mazda 2L shake at idle?
I have a 1997 626 Mazda 2L (manual) and it shook at idle and got progressively worse. It turned out to be the intake manifold seal. Its cheap to fix about $12 for a new gasket. To diagnose it is simple too, spray where the intake manifold joins the engine with a can of “jump start” or similar and if the idle picks up you have an air leak.
What causes an idle surge on a Mazda6?
An idle surge (rpm falling and then rising) surfaced and would show up once in a while, not constant. took the car to a mechanic and started looking into that. got a new clutch (almost no clutch left) found a leaking rear main seal, fixed that, machined the flywheel.
Why is my idle air control valve stuck?
The AFM may have a stuck measuring core. There is a spring-loaded measuring core, connected to a potentiometer, that moves in relation to incoming air volume. The Idle Air Control Valve/Bypass Air Control (IACV/BAC) may be stuck or bad. You can try cleaning the IACV/BAC. That will often fix a bad idle problem.
The AFM may have a stuck measuring core. There is a spring-loaded measuring core, connected to a potentiometer, that moves in relation to incoming air volume. The Idle Air Control Valve/Bypass Air Control (IACV/BAC) may be stuck or bad. You can try cleaning the IACV/BAC. That will often fix a bad idle problem.
What to do if your idle is unsteady?
Try unplugging the vacuum line from the EGR valve. If the idle smooths out, you have an EGR valve control problem. If not, try tapping the EGR valve and see if it shuts. You can reach under the EGR valve and manually push the diaphragm up and down to see if it makes a difference. You may have to remove the EGR valve completely to check it.
Try unplugging the vacuum line from the EGR valve. If the idle smooths out, you have an EGR valve control problem. If not, try tapping the EGR valve and see if it shuts. You can reach under the EGR valve and manually push the diaphragm up and down to see if it makes a difference. You may have to remove the EGR valve completely to check it.
How much does it cost to change the transmission on a Mazda 626?
Same as the diagnosis test done at Mazda last week cost me $300 instead of $79.95 as the mechanic had to do all these tests and take it out for a test drive – the hours were counted and I had to pay to find out it was the transmission – and after all that – transmission is ok – it was the Transmission Range Switch which needed to be changed.
What happens when the light goes on on a Mazda 626?
When the light goes on, it enters a Fail-Safe mode (the EPC solenoid opens up and brings line pressure up to ‘max’) the only catch is it raises the fluid pressure well beyond normal specs (it goes from 100 to 400 PSI). It is at this time where you get your major failures.
What to do if your Mazda 3 is stuck in Park?
There are several things you can try to get your Mazda 3 moving now. These include checking to see if the parking brake is stuck, finding the shift lock solenoid override (if applicable), and the shift linkage. Let’s get straight to it.
How do you get a Mazda shifter out of Park?
In this guide, you will learn how to move the shifter on Mazda out of Park manually. Set the emergency brakes on your Mazda. Insert the key into the ignition of your Mazda. Turn the key to the ON position. Locate the shift override slot next to the shifter of your Mazda. Remove the plastic cover if your Mazda has one.
Why is my Mazda 3 shifter not working?
I’ve seen some indication that the horn & shift lock issue may be related, a few threads for the pre-2010 Mazda3’s saying that their horn was not working along with the shifter being locked into park.
I have a 1997 626 Mazda 2L (manual) and it shook at idle and got progressively worse. It turned out to be the intake manifold seal. Its cheap to fix about $12 for a new gasket. To diagnose it is simple too, spray where the intake manifold joins the engine with a can of “jump start” or similar and if the idle picks up you have an air leak.
How to diagnose an air leak in a Mazda?
To diagnose it is simple too, spray where the intake manifold joins the engine with a can of “jump start” or similar and if the idle picks up you have an air leak. Mazda’s are prone to fault here.
How can I tell if my idle control valve is working?
To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.
What to look for in a Mazda 626?
Check the PCV hose and lines also. In addition, check the large air intake hose from the Air Flow Meter to the intake manifold for cracks and leaks. They often crack in the valleys and are hard to spot. Another good possibility is the EGR valve is stuck open or the EGR control is allowing vacuum to get to the EGR valve.
Why does my Mazda I4 shake at idle speed?
The problem is whenever at idle speed, the idle speed fluctuates. Usually going up and down between 500 and 750, causing the car to shake violently. The fluctuations get worse the longer the car sits at idle speed, and eventually causes the car to die. If pulling up to a stop light that lasts for more than 30 seconds the car will die.
The problem is whenever at idle speed, the idle speed fluctuates. Usually going up and down between 500 and 750, causing the car to shake violently. The fluctuations get worse the longer the car sits at idle speed, and eventually causes the car to die. If pulling up to a stop light that lasts for more than 30 seconds the car will die.
Why are the spark plugs on my Mazda 6 not working?
Spark Plugs – One of the absolute most common causes (if not the most common reason that your 6 may be misfiring) is the spark plugs. Although most modern vehicles use iridium spark plugs, they still need to be changed at the manufacturers recommended interval.
When does idle surge start on Mazda 6?
When driving the car and coasting in neutral the rpm will drop to 900 and most of the time hold or sometime have a light flicker. Strong surges or drops only seem to happen if I am traveling slowly, less than 15 mph, or stopped. I’m not really sure about how well that statement holds up but will experiment more tomorrow.
The Mazda Capella was commonly known in markets outside Japan as the Mazda 626. The Mazda 626’s sixth-generation was built on the GF platform and released in 1997 for the 1998 model year. My 2002 Mazda 626 car shakes alot.
What causes idle surges on a car ECM?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.
Is the Mazda Protege 5 2002 really dying?
It’s not dying (hasn’t yet) but when the car is idling or in low RPMs the car (Mazda Protege 5 2002) is fluctuating in RPMs. Also, the last start was rough. I’ve had issues with air intake before that seemed similar (cracked intake) but this seems a little different. I don’t recall the rough idling having the regular up/down like it is doing now.
How much does it cost to replace fuel pump in Mazda 626?
Switch the key to “ON” and the fuel pump should be heard running for a second or two. Listen at the gas filler if necessary. If you do not hear the pump the inertia switch should be reset, it will “click” when it is reset. The average cost for a Mazda 626 Fuel Pump Replacement is between $726 -$782.
What to do if your idle air control is stuck?
The Idle Air Control Valve/Bypass Air Control (IACV/BAC) may be stuck or bad. You can try cleaning the IACV/BAC. That will often fix a bad idle problem.
How old is a 2000 Mazda 626 car?
I recently purchased a 2000 mazda 626 , which is about 10 year old. I didn’t expect to get a perfect car second hand , i knew it needed some work, i got a set of spark plugs, rear right hand brake caliber and an altenator belt.
What should idle speed be if engine does not change?
– If engine speed does not change, adjust with the air adjusting screw (AAS) until smooth running anywhere between 500-800 rpm. – If engine speed changes execessively or stalls, inspect the PCM related wiring harness and connectors. 8. With A/C on you should expect to see rpm anywhere in 725-825 range.
To diagnose it is simple too, spray where the intake manifold joins the engine with a can of “jump start” or similar and if the idle picks up you have an air leak. Mazda’s are prone to fault here.
What causes a car to die at idle speed?
Usually going up and down between 500 and 750, causing the car to shake violently. The fluctuations get worse the longer the car sits at idle speed, and eventually causes the car to die. If pulling up to a stop light that lasts for more than 30 seconds the car will die.
What kind of transmission does a Mazda 626 have?
I have a 2002 Mazda 626 been driving it a year the car runs great,but the other day the car started jerking felt like the transmission.The Overdrive light comes on evevery time it jerks could someone please help me.
When the light goes on, it enters a Fail-Safe mode (the EPC solenoid opens up and brings line pressure up to ‘max’) the only catch is it raises the fluid pressure well beyond normal specs (it goes from 100 to 400 PSI). It is at this time where you get your major failures.
What causes a misfire after a warm up?
Misfire After Warm Up: Misfire After Warm Up. Runs Great When Cold… Misfire after warm up. Runs great when cold. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. have the same problem? This sounds like you have an intake valve that is leaking.
What should I do if my car misfire after warm up?
Misfire after warm up. Runs great when cold. Has new engine new plugs wires injectors when starts misfiring can shut down start back up and runs fine until a few minutes then starts again. have the same problem? This sounds like you have an intake valve that is leaking. Can you do a leak down test to confirm the issue? This guide can help as well.