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Thread: 02 Sonoma MAF
12-04-2012, 04:10 PM #1
- Join Date
- Oct 2012
02 Sonoma MAF
I have a 02 Sonoma 4.3l, and its throwing the dreaded p0300 code :/ I have rebuilt the motor and replaced all the ignition components and its still giving the p0300. It threw the MAF code 1 time, I cleaned it and cleared the code and it never came back. But I'm wondering if it may be faulty but not throwing a code ? The only thing that puzzles me is, when i watch it with an OBD II its cylinders 1 & 4 that misfire and every once in a while another cylinder will mis once or twice? any ideas or imputs ? thanks!!
12-13-2012, 08:25 AM #2
Misfires on warm up or still misfires after the engine is running at operating temp?
12-13-2012, 12:19 PM #3
What do the fuel trims look like?Minneapolis area - 1997 K2500 regular cab long bed, pushes plow in the winter, carries camper in the summer - 2004 4x4 Suburban 2500 8.1, pulls 30' Airstream trailer
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