Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Hello, I'm Brandon.
The aftermarket coil is the problem especially the one under Wells from Autozone.
I highly recommend using only original Volvo coils ( not aftermarket).
Also I would like you to put a bottle of techron fuel injection cleaner in the fuel tank.
Please rate me positive for the prompt service, thank you!
My name is ***** ***** I am a Volvo dealership technician. Fuel injector cleaner is not going to help. There are steps to take to diagnose this instead of guessing. If you'd like, I can go over what needs to be done.
You should at least start with replacing the #2 cylinder coil with factory coil.
If it still misfire with the same coil then we can go forward with the diagnose.
THese aftermarket coils from Mexico or China is very inconsistent. Their specification are not 100% on the mark with OEM. I have bench test these coils against the OE units before. They are little bit different in the graph.
ok, keep me posted.
While an aftermarket coil may fail early, I wouldn't suspect it to fail immediately. I'd be happy to go over the diagnostic process, just keep in mind we are only credited for helping when rated positively and there are two experts involved so you would need to rate accordingly.
First, you can check to see if the coils are firing fairly easily. With the engine running and the coils unbolted, just pull one up slightly to disconnect it from the spark plug. You should hear the spark arc from the coil to the plug. This will rule out the possibility of a bad coil. If all coils are firing and the spark plugs are new and correctly gapped but you continue to get a code for a misfire in cylinder 2, I would suspect a mechanical problem with the cylinder. A compression test can indicate if there is a problem. A cylinder leakage test can pinpoint the problem.
Okay, let me know. Misfiring under load shouldn't be too hard to pick point with a compression and cylinder leakage test.
Did you have any other questions about this? I see the question is still open