Any reason I stay in Fuel Trim cell #4 alot?
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Member
Joined: Jan 2001
Posts: 436
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From: Ft. Worth, TX
Car: 89 Turbo Trans Am and lots of non-3rd gens
Engine: 231 SFI Turbo's, LT4, LT1
Transmission: 2004r, 4L60E
Any reason I stay in Fuel Trim cell #4 alot?
I've noticed that the ECM is in trim cell #4 alot and not just at idle and PE. It does move around but I notice at cruise its in cell #4 alot. I've reset the eCM several times, it was stuck in #4 all the time for a while after I reburned a chip, fixed it by unplugging the (+) battery cable finally.
Any ideas?
Any ideas?
Thread Starter
Member
Joined: Jan 2001
Posts: 436
Likes: 0
From: Ft. Worth, TX
Car: 89 Turbo Trans Am and lots of non-3rd gens
Engine: 231 SFI Turbo's, LT4, LT1
Transmission: 2004r, 4L60E
I think I've figured this one out, its because I had the "Max. Speed for Idle Mode" set at 20mph. Will reset to to around 12mph.
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