Results 1 to 2 of 2

Thread: stft issues...

  1. #1
    Tuner in Training
    Join Date
    Jan 2007
    Posts
    27

    stft issues...

    Just a quick question, folks.
    Over the last few weeks my car became a bit hard starting, and this morning it started to run like garbage.
    I scanned it, and both O2's appear to be asleep.
    STFT's are zero, and LTFT's are +25, as if the O2 sensors have died.
    This is at idle.
    They do not wake up with throttle and the car is undriveable.
    Any help is greatly appreciated.
    Brian

  2. #2
    Tuner in Training
    Join Date
    Jan 2007
    Posts
    27
    Tried something-
    went to VCM controls, and forced the car into closed loop
    -started to get STFT activity (climbing on the + side), but still ran like garbage
    -at same time, LTFT's were still maxed
    -O2's b1/b2 still appeared to be asleep, but were in the 200-450mv range
    -I am thinking maybe a fuel supply issue(bad filter?)
    -plugs looked good, no fouling(lean from no fuel?)