2002 Camaro SS P0300 misfire code
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2002 Camaro SS P0300 misfire code Hello everyone. I have a 2002 Camaro SS v8 5.7L I got the code P0300 the other day. It’s the code for random misfire not indicating one specific cylinder is failing. So far I have replaced all spark plugs, spark plug wires, ignition coils, MAF sensor, & TPS sensor. None have fixed the issue. All fuses inside interior and engine bay are good as well. Made sure there aren’t and vacuum leaks as well. My battery is healthy, & giving off 12v. I doubt my fuel injectors are the issue as well. Currently the car starts up fine each time. After a couples of minutes of driving the car can’t hold idle and dies. This issue started after I replaced the engine bay fuses. Any ideas on what the issue may be?
EDIT: Also just replaced the crank position sensor, and cam position sensor. Same issue.
when I come to a stop the car begins to drop RPMs and will die if I don’t give it some throttle. Sometimes will get stuck at 2k rpm until I put it into first gear then drops to normal idle.
If anyone can help me fix this ill send you $40 hahaha
EDIT: Also just replaced the crank position sensor, and cam position sensor. Same issue.
when I come to a stop the car begins to drop RPMs and will die if I don’t give it some throttle. Sometimes will get stuck at 2k rpm until I put it into first gear then drops to normal idle.
If anyone can help me fix this ill send you $40 hahaha
Last edited by Pharsider; Feb 16, 2024 at 12:36 AM.
random misfire There are a few different issues that can cause misfires besides the ignition system. An engine that is starting to wear out so compression low. O2 sensors(upstream) , low fuel pressure, some of the injectors starting to clog a little will throw things off. For instance say You have 1 or 2 dirty injectors on 1 bank, then the computer will richen up that bank to compensate creating the other non dirty injector cylinders to be rich. The 2 dirty inj cylinders then may or may not be rich enough so . I would lean toward up strean O2 sensors and check overall fuel pressure and if low it could be pressure regulator. Buy 3 or 4 bottles of injector cleaner and put at least 2 bottles to a full tank and repeat and You may get lucky and they clean out
