Tricky-Ricky Posted July 27, 2007 Share Posted July 27, 2007 Took the Supra out to try and finish the mapping, seemed OK for a while, and then the AFRs started to go rich, a bit random but in essence it would occasionally run at stoic but most of the time it was down in the 10 s:( even on idle, so is this a dieing lambda? i think my wideband is ok as on closed throttle and on boost it behaves as i would expect. Next question, how many wires does the std sensor have? and is it the same as MR2 type? as i can get one here http://www.lambdasensor.com/main/mr2.htm Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted July 28, 2007 Author Share Posted July 28, 2007 OK going to run the simulated narrow band signal from my Innovate wideband, to the ECU for now, just not 100% sure which is the input signal to ECU 48 or 71?? and is an earth needed? Link to comment Share on other sites More sharing options...
n boost Posted July 28, 2007 Share Posted July 28, 2007 Hello mate, I had a similar problem once and it turned out to be my wideband sensor. I bought a new sensor for it. Have u calibareted it recently. The bosch sensor on the innovate is the same as some audi/vw and i got few from my breakers yard about 25 quid each. Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted July 28, 2007 Author Share Posted July 28, 2007 Pretty sure the wideband is fine as it behaves as it should plus i was getting slight misfire on cruse, which would go along with the rich AFRs, but i have a couple of spears so i can swap it over if needs be. Link to comment Share on other sites More sharing options...
SimonB Posted July 28, 2007 Share Posted July 28, 2007 It may be that you're on the limits of what the stock ECU can adjust for. In closed loop it will only lean off (or richen up) a certain amount. You may need to pull more fuel out so it doesn't have to adjust so much. Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted July 28, 2007 Author Share Posted July 28, 2007 Surly that would make no difference as it is still running as STD ECU, no fuelling adjustments are made below 4,000 RPM, i have just switched over to running the ECU from my wide bands narrow band sim and it seems to fluctuate more, (this is on idle and not fully warm) but the std sensor that is suspect will go from 14.4 to 15.1 on idle, but with the sim its 13.9 to 15.0 strange as it should be a replica of a std NB output, may have to tweak it slightly. Wont really get a chance to tell until i take it out and check AFRs at cruse. Link to comment Share on other sites More sharing options...
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