fighting_irish1

ok . . so we did a swap today we put a zc into an eg hatch the damn thing won't rev up and has an irradic idle it will idle at wide open throttle no matter what the throttle position is it still idles wehter its wot or at idle position it sems like i need help . . i can't figure out what the issue is its throwing a code 41 which is a primary o2 sensor, is it the o2 sensor that makes it run like *** it will not rev up past 1000 rpm no matter what you do the timing is perfect, compression is at 160 +- 5 lbs in each cylinder, the plugs are running black slightly carboned up . . we tried a different TB with a different tps and 3 bar map sensor its a 1st gen zc in an eg . . . using the 1st gen intake . . .someone please give me an idea of where to go from here need to get this POS honda running . . . . . . .

fighting_irish1

please !!!!

red90dx

double check your wiring, this sounds stupid but does the throttle cable have slack?


what ecu are you using?

89SIHATCH?

actually code 41 is (o2 sensor heater)
ya what ecu are you using?
if its a first gen in an EG dont you have to go obd1 to obd0?
some of that obdo **** is still new to me but....? is that the probllem?

pm andrew (zeeman) might be able to explain something.

zeeman

iTrader: (1)

3 bar map sensor?!?!?!?! Is the ecu chipped? Was a 3 bar map selected on the chip that was burned?
What ecu are you using?
What injectors are you using? (obd0 or obd1)
What distributor are you using?

fighting_irish1

not sure if its a 3 bar map sensor its the one mounted on the throttle body, the little tiny one on the top .. . . using a p75 ecu from a 95 integra, and using the original zc distributor re wired for the eg plugs, ran the blue wires over to the crank sensor on the front cam, and all the others matched up. . .

fighting_irish1

we put the original civic eg wire harnes on the motor, and the old civic injectors as they were the only ones that would plug into the harness . . .

zeeman

iTrader: (1)

ok so you are using an obd0 dizzy, obd1 injectors and an obd1 ecu.
I haven't had luck re-pining an obd0 dizzy for use in an obd1 car, but thats just me. I tried this on my buddys car, had a very similar problem, swapped it out for an obd1 dizzy and it was fine.
Did you maybe switch the TPS plug with the MAP plug?
Try switching them around and see what happens. I've seen this a few times, and it would do the same thing you describe.

fighting_irish1

i used the obd 0 dizzy plugs the only difference in wire colours was the 2 whites . . . there was one white wire, and one yellow wire with a green stripe . .. so i tried switching them around and one way it ran the other it wouldn't even fire ., . . .

red90dx

you cannot use a obd-0 distributor WITH an obd1 ecu or vice versa, GO and buy an obd-1 distributor for your motor, and remove the exhaust cam sensor as its built into the newer obd-1 dizzy...I have the same swap in my 90, but i coverted to OBD-1.

REPEAT .... OBD1 AND OBD-0 DISTRIBUTORS ARE NOT COMPATIBLE UNLESS YOUR USING THE SAME OBD ECU!!!!!

zeeman

iTrader: (1)

Word, this is what i was saying.

white92d15b7

thanks were gonna try this on wendnesday !!!! WORD !!!

fighting_irish1

thought u said tomorrow man