LTFT help.
10-29-2005, 01:33 PM
#1
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LTFT help. I have a 99 TA 6spd. Just got it tuned recently but we ran into a problem
Seems that my car isn't reading the LTFT. I think they sat a .05 and never ever ever even twitched at all. We are hopefully going to be able to do some looking around the engine for some messed up wires or something but does anyone know what could cause that? The car runs great when the a/c is not on. Idles fine only when warmed up. When you start the car it will hunt for the idle to it levels out. Then when you turn on the A/C it doesn't raise the idle like the tune requests it to do, so it just ends up bogging down and dying.
Any ideas?
Which wires?
Could the computer be bad?
Anything mechanical to look for?
If anything at all please chime in.
Mods are as listed
224 / 224 .563 .563 112 Thunder racing cam
FLP long tubes with Cats on
whisper lid
hooker catback
star spec 3 clutch
ripper shifter
Thanks
Mike
Seems that my car isn't reading the LTFT. I think they sat a .05 and never ever ever even twitched at all. We are hopefully going to be able to do some looking around the engine for some messed up wires or something but does anyone know what could cause that? The car runs great when the a/c is not on. Idles fine only when warmed up. When you start the car it will hunt for the idle to it levels out. Then when you turn on the A/C it doesn't raise the idle like the tune requests it to do, so it just ends up bogging down and dying.
Any ideas?
Which wires?
Could the computer be bad?
Anything mechanical to look for?
If anything at all please chime in.
Mods are as listed
224 / 224 .563 .563 112 Thunder racing cam
FLP long tubes with Cats on
whisper lid
hooker catback
star spec 3 clutch
ripper shifter
Thanks
Mike
10-30-2005, 07:27 PM
#4
sounds like a crap tune to me....
car might be in open loop commanded to never enter closed loop..that would give you stuck LTFT's especially If they were in closed loop before and Fuel trims never reset
the Idle issue is a RAF issue...
MAny Many "tuners" dont know what they are doing....
People need to learn that going to a dyno tuner is not a tune.....its just WOT on the Dyno....it seems that a lot of "tuners" really have no clue what they are doing...I haev fixed a bunch of tunes in the KC area all because of a "tunder" that blundered many tunes from his crappy tuning abilities
car might be in open loop commanded to never enter closed loop..that would give you stuck LTFT's especially If they were in closed loop before and Fuel trims never reset
the Idle issue is a RAF issue...
MAny Many "tuners" dont know what they are doing....
People need to learn that going to a dyno tuner is not a tune.....its just WOT on the Dyno....it seems that a lot of "tuners" really have no clue what they are doing...I haev fixed a bunch of tunes in the KC area all because of a "tunder" that blundered many tunes from his crappy tuning abilities