Quote:
Originally Posted by JustDo1nMe
Hello, hoping I can get some help or see if anyone else has had a similar issue...
My 2018 ZL1 has just about 3000 miles. It was dyno tuned with a rotofab intake, ARH headers, borla cat-back, and LT5 throttle body.
Just before winter started, I was out on a normal cruise when the car started misfiring. It through a CEL (P0303) Misfire Cylinder #3. Along with the CEL, the instrument panel displayed errors (service rear end/axel). The codes go away when the car is shut off and then turned back on but will re-trigger once t
he car goes over 2k rpms. Even when codes are cleared... you can tell it has a misfire in the idle.
I have not tried any trouble shooting yet.
Any feedback is greatly appreciated. Thanks in advance!
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Hey guys just an update on this... I recently just got the car out of winter storage and did the mentioned triage steps.
Coil packs and connections seem fine but I pulled the OEM plug and it appears it might be fouled.
What do y’all recommend for replacement plugs and gaps on them for my setup?