Popular questions

There are many components that work together to ensure your vehicle produces low emissions. It can be something as simple as a vacuum leak or faulty PCV valve, or even a faulty oxygen sensor or catalytic converter. If you didn't...

While the Intelligent Key will let you open the doors and the trunk without having to press a button on the key itself, it does double as a remote entry device. To use it, you just need to take the...

I would recommend removing the ignition lock cylinder and trying this again. Many ignition cylinders have small parts called tumblers that require being put together in an exact way. If any of these tumblers are not in their correct position,...

The engine compression may be low in the cylinder. If you have spark and fuel, all you need is good compression. Have the whole engine compression tested to get a general condition of the entire engine. If the compression is...

Hi, thanks for your question. I'd be happy to help. The diesel battery may be heavy duty compared to the petrol engine. The two batteries should be compared for size and height to be the same and the terminals should...

Hi there. Since you completed so many different repairs, it unfortunately opens the door to multiple possible issues that might be the source of your hard to start issue. The first thing I would do is knock off the easy...

If you have replaced all of those components and you're still getting issues then the problem should be in the fuse box with the body control module fuse located in it (on the driver side) or there is an open...

The vehicle idling in park with no A/C does not really require much need for the idle air control valve. Once the vehicle is put in drive, this will put a load on the engine as the A/C will require...

You may have a vacuum leak or a sensor failure that will require the computer scanned for stored codes so the problem can be isolated.

What you are describing sounds like a faulty starter solenoid. A faulty starter solenoid will generally produce a clicking sound when turning the key. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity...

Hi. If the code is still present after both sensors have been replaced, and the engine is stalling, further diagnostics is needed. First of all, a new sensor doesn’t always mean a good sensor, especially aftermarket ones. Check the sensor...

In your initial question, I did not know that valve damage occurred as a consequence of a failed timing belt replacement. The 4 valves that the shop "claims" were damaged might merely represent what they "think" was the extent of...

Hello. It may be a problem with the choke on the carburetor. Try some carburetor cleaner in and around the carburetor, especially the choke plate. On a cold start no matter the temperature, the choke plate should be mostly closed....

Hi There, There are many reasons that may cause the car not to stay running such as faulty ignition components (i.e. ignition coil, module, spark plugs, etc.) or potentially a lack of consistent fuel pressure or dirty fuel injectors causing...

A diagnostic is only meaningful if there is a specific identification of a part or parts that have failed, are worn out, defective or the like. The bearings in the differential that you refer to are not visible for inspection,...

Ideally, you should have aligned the marks before you removed the timing belt. It sounds as though everything is completely disassembled already. This makes things a bit more difficult. I would only recommend assembling it the same way as you...

Hi there, thanks for writing in about your 2001 Mercedes Benz ML430. This problem could be caused by a slipping belt or a faulty belt tensioner. The power steering pulley needs to be observed while the car is parked and...

Prior to condemning the ABS module, there are quite a few tests that must be performed to rule out more common causes. In particular, you always want to rule out what is indeed the most common cause of an ABS...

Thanks for asking. With all of the work that has been done to the vehicle, I would recommend having a mechanic, such as one of our YourMechanic experts, inspect your starting issue. Your symptoms sound like an air/fuel metering concern...

If the check engine light is on then you will have a stored code in one of the computers in the car. It will store a code anytime the light is on. You may have a problem with the fuel...

You will need to check the engine intake for vacuum leaks and if not then replace the sticking idle control valve and then relearn the idle by disconnecting the battery and then reconnect after 10 minutes. Start and hold at...

You should have a mechanic like one from YourMechanic test the computer and engine mounts for problems that may be causing the running rough? The motor mounts may be broken or you may have a problem with the intake manifold...