The obd code come up 0302. #2cylinder misfire.
BEFORE you replace any parts,
TRY switching spark plug #2 with another cylinder, or fuel injector, or spark
plug wire. See if the misfire "follows" the switched part. If that
fails, you could have a vacuum leak near cylinder #2, but I doubt it. If the
above tests fail, your problem is mechanical (broken valve spring, collapsed
lifter, improperly seated valve etc.). May be you must get the obd
code one more time for the obd may have the wrong code before. There are some obd may help,
design for ford professional
Yes it could but you should have fault codes stored for this, has it been scanned for fault codes? Autozone does this test for free as well as other parts stored.
SOURCE: coil pack keeps going bad,
Your problem sounds like an intermittent short in the power feed to the coil pack from the EEC module
SOURCE: engine code p0307 cylinder #7 misfire
It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.
SOURCE: 2003 Chevy Venture misfiring
The injector is a good possibility, although you should check for spark in the wire first, as the electrical is the weakest link in the system. Put a spare plug in the end of the wire with the plug resting on metal, then have someone crank the van to see if you have spark that far, test and replace spark plug, (do not get shocked!) then look into a new injector or a good cleaning.
SOURCE: 2004 Audi A4 misfire
it is always a good idea to stay with o.e.m parts and yes there is updated parts in the newer coils. and yes the M.A.F will also cause misfire faults but will not make check engine light flash or make car shake and shudder. also check you wire harness going to your coils make sure your ground wires are not cracked. That could be the main culprate. good luck hope this helps
SOURCE: 2002 Ford Taurus SEL, DOHC Misfiring
Disconnect the battery completely, try turning the key with the battery disconnected. Put the battery back together. The check engine light should be off now..
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