Fuel trim cells ?, car acting odd
02-18-2004, 05:29 PM
#1
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Location: Glen Burnie, Md
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Fuel trim cells ?, car acting odd
idles in cell 16, and on snap throttle transitions (0-80,100%) it goes to FTC 18 up to 9 ms pulsewidth, and bogs. Slow transition is better, fast will kill the car when its cold. Way to rich.
Cruise at cell 15 at 40% throttle 2500-3500. Going from the info I have shouldnt that be more like cells 7 or 11?
Cruising it shows retard a little bit once the Charc Can. Purge gets to its peak. The snap throttle is FTC 18 which some said has something to do with CCP
Any ideas?
Overall car runs horrible on cold starts, open loop is rough idle, closed loop it pulls 15% on both banks out and idles a bit better
Cruise at cell 15 at 40% throttle 2500-3500. Going from the info I have shouldnt that be more like cells 7 or 11?
Cruising it shows retard a little bit once the Charc Can. Purge gets to its peak. The snap throttle is FTC 18 which some said has something to do with CCP
Any ideas?
Overall car runs horrible on cold starts, open loop is rough idle, closed loop it pulls 15% on both banks out and idles a bit better
02-20-2004, 05:07 PM
#7
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Location: Waynesboro, PA
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Originally posted by LTOne4Fun
I switched it to read percent idle is -15.6%/-15.6% at 1500 +25/-15
I switched it to read percent idle is -15.6%/-15.6% at 1500 +25/-15
Ok, I never noticed it going lean on the one side.
I'm wondering though, if the -15.6% is the bottom end of the barrell, being 108 LTerms, how much it's actually subtracting. Couldn't it be more, since the 108 is the reading limit for the computer??
02-22-2004, 01:58 PM
#8
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Location: dallas, tx.
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Originally posted by LTOne4Fun
I switched it to read percent idle is -15.6%/-15.6% at 1500 +25/-15
I switched it to read percent idle is -15.6%/-15.6% at 1500 +25/-15
your engine is runnin extremely rich!
check for too much fuel pressure
faulty MAF
injector leakin
at the 1500 rpm........that bank with the -15%.......I would suspect that bank to have a leaking injector.
02-22-2004, 03:59 PM
#9
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Join Date: Mar 2002
Location: Waynesboro, PA
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Originally posted by JDBlaze85
your engine is runnin extremely rich!
check for too much fuel pressure
faulty MAF
injector leakin
at the 1500 rpm........that bank with the -15%.......I would suspect that bank to have a leaking injector.
your engine is runnin extremely rich!
check for too much fuel pressure
faulty MAF
injector leakin
at the 1500 rpm........that bank with the -15%.......I would suspect that bank to have a leaking injector.
No maf, my car is a 93 Speed Density setup.
No leaking injectors. There's absolutely no signs of a leaker, I.E. hard or long start condition.
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