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well i started started up my truck today n it start with no problem, but i did notice it sounded like a ricer engine with no exhaust since i dont have it hooked up yet. i left it on for a while n only the passenger side exhaust manifold was get hot, n the other was just warm so i checked for a spark on all the driver side cylinders n no spark! so wat could it be? something i did wrong in the harness? or perhaps the PCM maybe my tuner did something wrng?
btw this is on a 88 chevy with 5.3 swap
I would check power and grounds to the driver side coils and make sure you have 12v to the injectors when the key is on.
kool ill do that todayQuote:
Originally Posted by RedHeartbeat
I had a similar issue where we thought it was the spark at first. Ended up that the company that did the harness had 2 of the wires in the o2 sensor switched backwards....
Agree with Red. Luckily you have a know good side, so you can swap the 4 offending coils with the good side and rule that good or not.
problem solved it turned out to be a lose connection from the harness to the coil pack thanks guys