Replaced all plugs, wires and coil packs as well as the plate the coil packs sit on. when i start the car it revs up to 2500 rpms then drops then revs again then drops and sputters and chugs then dies..... what is wrong?
Have vechicle code scan could have faulty idle air control valve.
SOURCE: 2004 pontiac grand am misfire
Check the plug wires for those 2 cylinders, next check the injectors, as they can cause misfire when defective.
SOURCE: 1994 pontiac transport se not firing in first coil pack at idle
ARE YOU CHEKING SPARK OFF THE COIL TOWER OR AT THE SPARK PLUG END OF THE WIRE SOUNDS LIKE YO HAVE A BAD WIRE
SOURCE: 2001 Firebird 3.8 misfires
Check your alternator see if you have a drop in voltage on your tack,then it is the problem.I too was a victim of high price tune up and still had a problem with a misfire.and cover your coil pack with a piece of rubber water run of onto your power pack .Another thing is to use a silicone spray on all wires.
SOURCE: Intermittent white smoke out exhaust and engine misfire
The piston rings in your engine might be needed to be replaced already... go to a local shop with a compression tester.. have your engine tested for compression leaks.. if it does have compression leaks.. then you need to change piston rings. Note** white smokes = engine is burning oil..
SOURCE: i have a 99 grand am SE 2.4 4 cylinder and my
A misfire doesn't always have to be ignition... it's just the most common cause. Faulty or plugged injector, low compression. You need to check fuel pressure and test the fuel injector flow. Then check compression. If you don't have tools for these tests, take it to someone who does. Testing is much cheaper than throwing parts at the problem.
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