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Thread: 99 5.7 high rpm misfire
03-18-2014, 09:49 PM #1
99 5.7 high rpm misfire
It happened on our way home from Oklahoma yesterday while pulling an empty flatbed trailer. At high rpm around 60mph in passing gear the cel would come on and sometimes flash. Had the code pulled tonight (p0300) random/multiple cylinder misfire. Strange. I just replaced the intake gaskets, plugs, cap/rotor. It only does this at higher rpm's. I also have a rear speed sensor code that was pulled.
For clarification, the service engine soon light DOES NOT stay on. It's currently off.Chuckie!!!
03-21-2014, 03:54 PM #2
Nobody else has run in to this?Chuckie!!!
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