P0300 Multiple Engine Misfires.
#11
RE: P0300 Multiple Engine Misfires.
Thanks for all the help and tips so far.
I talked to the Dealer this morning.
Dead miss on clyindars 1 and 2. They fire about every other time.
What is good.
Vacuum good, no leaks.
Fuel injectors good, and firing on time.
Compression good.
Basically it comes down to spark. The coil is good and the spark timing is good. I have replaced the spark plugs and spark plug wires. Right now the dealer thinks the trouble is the cap and rotor. I'll replace them tonight and see what happens.
I talked to the Dealer this morning.
Dead miss on clyindars 1 and 2. They fire about every other time.
What is good.
Vacuum good, no leaks.
Fuel injectors good, and firing on time.
Compression good.
Basically it comes down to spark. The coil is good and the spark timing is good. I have replaced the spark plugs and spark plug wires. Right now the dealer thinks the trouble is the cap and rotor. I'll replace them tonight and see what happens.
#12
RE: P0300 Multiple Engine Misfires.
I feel like an idiot.
I replaced the cap and rotor. Runs like a top now.
At least I know the other stuff is in good shape.
Its snowing out, my truck runs great again, all is golden in my little corner of paradise.
I replaced the cap and rotor. Runs like a top now.
At least I know the other stuff is in good shape.
Its snowing out, my truck runs great again, all is golden in my little corner of paradise.
#13
RE: P0300 Multiple Engine Misfires.
Congrats Tim!
#14
RE: P0300 Multiple Engine Misfires.
Thanks Kyle.
#15
RE: P0300 Multiple Engine Misfires.
This has been very useful everyone!Yet, I have the exact same problem, and have done everything the same except for replacing the coil, and the ICM. However, I have a 95, and she's also throwing an O2 code which has been needing replacement for about two months now. Could replacing the O2 sensor really help, or should I move on with coil and ICM. Thanks again.
#16
RE: P0300 Multiple Engine Misfires.
I would def replace the oxygen sensors. You can get a misfire from a bad o2. Since the o2s control your fuel trims, this could be a source of a misfire.
#17
RE: P0300 Multiple Engine Misfires.
ORIGINAL: Hanr3
I feel like an idiot.
I replaced the cap and rotor. Runs like a top now.
At least I know the other stuff is in good shape.
Its snowing out, my truck runs great again, all is golden in my little corner of paradise.
I feel like an idiot.
I replaced the cap and rotor. Runs like a top now.
At least I know the other stuff is in good shape.
Its snowing out, my truck runs great again, all is golden in my little corner of paradise.
I'm glad it was such an easy fix though, even if it took a while to diagnose.
#18
RE: P0300 Multiple Engine Misfires.
Thanks Moonie.
I did notice while I was changing the cap & rotor that a squirell had eaten lucnh on the back side of my engine and left his mess. I cleaned it off with my air compressor. We mgiht be eating squirell this summer.
I did notice while I was changing the cap & rotor that a squirell had eaten lucnh on the back side of my engine and left his mess. I cleaned it off with my air compressor. We mgiht be eating squirell this summer.
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