Chasing Hesitation/bog - ZR-1 Net Registry Forums

FixxerAuto · 07-05-2018

Yeah, i see your point... Maybe nitrogen or CO2 would be better...

Update: I went out and got on it at full throttle. Around 7000RPM you could feel some slight missing and it didn't feel like all the power was really there. But, at the top of first, i got a SES light that told me codes 22 and 46. TPS voltage low and VATS communication fault. Also, the next time i started the car, the idle was at 3000rpm. I had to limp home that way and when i got here, the idle was at 2000. So, i removed the IAC valve and put it in a rag, then shorted A to B on the ALDL. When i checked it, the pintle had come all the way out like it should. I reinstalled the IAC and the idle was back to 1000rpm as usual...

So, i am thinking that the high idle must have been in response to the TPS voltage discrepancy. So now i need to figure out if the problem is with the TPS or the wiring. I am guessing that it is the wiring because, i don't think a failed TPS would be intermittent. So i am contemplating on running new wires from the ECM to the TPS to avoid another Plenum pull... What do you guys think?

07-05-2018	#11
FixxerAuto Join Date: Jun 2018 Location: Nampa,ID Posts: 6	Re: Chasing Hesitation/bog Yeah, i see your point... Maybe nitrogen or CO2 would be better... Update: I went out and got on it at full throttle. Around 7000RPM you could feel some slight missing and it didn't feel like all the power was really there. But, at the top of first, i got a SES light that told me codes 22 and 46. TPS voltage low and VATS communication fault. Also, the next time i started the car, the idle was at 3000rpm. I had to limp home that way and when i got here, the idle was at 2000. So, i removed the IAC valve and put it in a rag, then shorted A to B on the ALDL. When i checked it, the pintle had come all the way out like it should. I reinstalled the IAC and the idle was back to 1000rpm as usual... So, i am thinking that the high idle must have been in response to the TPS voltage discrepancy. So now i need to figure out if the problem is with the TPS or the wiring. I am guessing that it is the wiring because, i don't think a failed TPS would be intermittent. So i am contemplating on running new wires from the ECM to the TPS to avoid another Plenum pull... What do you guys think? Last edited by FixxerAuto; 07-05-2018 at 08:51 PM.