Sorry it's so big. This is my first scan and I'm not exactly sure what I'm doing. I would appreciate help diagnosing this. I only included full or close to full throttle scans. Anything else I should look for? TIA
We can see that the car is running lean and that you're getting a fair amount of KR. That means the car sees detonation on a regular basis. What are your mods? Please give a complete list. On your next scans it's also good to include injector pulse widths, MAF in frequency, MAP.
I will do another scan with those other items. PEM's are on the way, will they help? The best gas I can get here is 90 octane(4200 ft elevation). I had seafoam additive in the gas during the passes that I did that first scan, will that hurt? help?
The PEMs will help bring your KR down, but won't do much for your A/F. I'd still like to see your IPWs and try to understand why you're running lean. It could be any number of things. Tired fuel pump, clogged fuel filter, clogged or bad injector(s), kinked fuel line, bad FPR, bad O2, cracked vacuum line....
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting, builds, tunes, superchargers, maintenance, and more!