webslinga

http://www.mediafire.com/download/o9...3/12-11-13.uni

It's a 96 trans am a4 in a 88 s10. It has been converted to 94 obd1 with no emissions and has a cold air intake. completely stock engine has s10 swap headers and true dual exhaust no cats. runs rich.

logged with datamaster

bobdec

Yes it's running rich, pcm is pulling 9-15% fuel looking at LT BLM's. It's equal on both banks so O2's and exhaust gaskets s/b OK. O2 voltage swing looks good. I looked at your idle in blm cell 16, RPM 50-100 higher (600-650) than desired RPM (550). And you're IAC is at 0 and timing is pulled lower than 20 so the PCM is trying to slow down the engine by closing the IAC air and lowering timing. Normally I would say the TB blades are open to far, but yout TPS voltage is at .59v and that's good on a stock TB. What I did see is your air flow at idle seems a bit high at 8-7.6 AFGS. And MAP just a bit high at 37 Kpa. How is you intake air setup on the S10, have you modified the MAS, insured no intake air leaks, are the injectors stock and what is your fuel pressure. I would concentrate on getting idle correct with a target IAC around 40 in cell 16 by verifying no intake leaks, and getting AFGS into the 6.6 range. If LT counts are still negative 9-15% (116-108) low (pulling fuel) then verify fuel pressure is good (s/b high 30's at idle) . I assume you are running stock tune, if not verify injector offsets and flow are correct. Basically if TB is stock and tune, MAS, injectors and fuel pressure are all set to stock specifications then there has to be an air leak or a sensor failure. A misfire, O2 sensor or valve problem would be bank specific and again you're rich equally on both banks...

The DTC 26 can be fixed by either installing the EVAP solinoid and tucking it away, or a 10K ohm 1/4 watt resistor between the +12 volt and EVAP pick line from PCM. The PCM is looking for +12 volts on the pick line when not activated, and 0v on the pick line when activated. Basically replace EVAP solinoid with a resistor , here is a PIC. http://www.mifbody.com/DTCs/DTC%2026.jpg . Assume you deleted EVAP with the swap.. Do you have a SES light hooked up, don't see a DTC 11 so I assumed yes..

webslinga

Thanks for your time and all the info. Yes i have the ses light hooked up. Its a stock tune.