icuinmyrearview
20+ Year Contributor
- 41
- 0
- Jan 6, 2003
-
port st lucie,
Florida
ok after sitting for 2 months my 2g fwd is back on the road. and in two months devised yet another way to piss me off. im cruising...about 50mph, lo throttle, and i throw a CEL. i scan..p0170...fuel trim malfunction in bank 1. i understand the code, its sayin im running too rich, lean, blah blah blah for the ecu to compensate. so i start looking at other things...o2 voltage is pretty much .93 across the board (rich for the sunner heat in fl) egt's rising at a normal rate holding around 840C. everything seems to be in order, gas mileage has taken a huge drop however. i reset the ecu, and go on my merry way. all of a sudden fuel cut 15psi@4500 on my Tiny25. i been driving around on lo boost now (10psi) for the last few days, and cant take it anymore. the cel has come back on, i dont always hit fuel cut but now its starting something new. at 4500rpm it feels as thought i have 100,000,000cc injectors. car starts slowing down majorly, and o2's are jumping to the .99-1.05 range. so i go to the trust s-afc and lean out...to about -8% which would of been pretty lean from my past experiences with the 440's and t25. but nothing has changed, still rich up top, o2's havent dropped a bit, doesnt matter how lean i go. as far as fuel.......255hp pump, -6an lines, and an s-afc (1000: 0, 2: -2 3:-3 4:-3 4.5:-3 5:-6 6:-6 7:-6) i know i know the 255hp woth no pump? im still at 43psi at for fuel pressure and i know thats not it. i just dont understand......none of my settings have chhanged whatso ever, but now all of a sudden im richer than bill gates, and regardless of how much i change the s-afc...the o2's do not change. HELP!