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Justin86
04-30-2005, 08:26 AM
I keep getting an IAT code and even after I repalce the sensor I still get the code and it is completely fucking up my A/F ratio. I haven't had a chance to swap in a different ECU but I'm running out of options with this car.
carotman
04-30-2005, 12:39 PM
measure the IAT sensor directly at the sensor then measure it directly at the ECU... this will tell you if you have a short wire somewhere
nswst8
04-30-2005, 02:45 PM
I'll bet its a short, thats the first thing you rule out before changing the sensor.

Good luck
Justin86
05-01-2005, 08:00 AM
doh.......... I'll grab the tester.
Justin86
05-01-2005, 05:00 PM
well that sounded to easy, I didn't find any problems with the wiring. Grabed the know good ECU out of my bro's accord then it started to give me a TPS, ECT then the IAT code. Swap the civic ECU back in and it was giving me the TPS and ECT also. This OBD-1 crap has been giving me more and more problems then the OBD-0.
carotman
05-01-2005, 06:11 PM
Did you measure the IAT's impedance?
AccordNut
05-01-2005, 07:14 PM
im still getting the IAT code too...how do i test the wires for shortage? i bought a new one from auto zone a while back but it came with some thick plastic covering the sensor and it didnt come off....then i messed it all up trying to cut it off. $60 down the drain!
88Accord-DX
05-01-2005, 09:17 PM
I'm wondering if your ECU is bad now. Being that you put it back in and throwing different codes now. That is something I would have to look at & do my test to be positive on it.
*edit. There is some more equipment to do more of a in-dept analysis on the problem here.
Justin86
05-02-2005, 05:33 PM
No i never checked the resistance since they were giving me the correct voltage. I'll go ahead and try but they are all brand new as in got them a week ago.

lol yea autozone has there part #'s mesed up for that sensor, they gave me the same one that is for the 90+ honda's and it's too big.
Well I have new IAT, ECT, and TPS sensors, checked the wiring for the correct voltage, tried 2 ECU's and go the same results. As far as I can tell the OBD-1 system basicaly uses the same sensors.
Justin86
05-02-2005, 09:07 PM
at the end of the stock harness and I checked the adapter harness and all the wires go to the correct pins.