Extreme rich condition - ZR-1 Net Registry Forums

Perry Mitchell · 07-12-2020

Time for an update. Because the consensus is that I have tied the injectors to the ECM in pairs since I do not have the secondary relay modules, Marc has provided me with another re-calibrated prom that reduces the fuel flow by 50% at idle. I cleaned the AIT sensor and the IAC sensor. I adjusted the TPS to .55 volts. The engine started and idled as before but this time I had no obvious rich condition at idle. But when the engine ran for 2 minutes, the rich condition seemed to re-appear. I am getting close but not there yet. I purchased an ALDL to USB cable and am trying to figure out the Tuner Pro application. I will let you know what I find out. Thanks Marc.

07-12-2020	#11
Perry Mitchell Join Date: Nov 2018 Location: Washington Posts: 98	Re: Extreme rich condition Time for an update. Because the consensus is that I have tied the injectors to the ECM in pairs since I do not have the secondary relay modules, Marc has provided me with another re-calibrated prom that reduces the fuel flow by 50% at idle. I cleaned the AIT sensor and the IAC sensor. I adjusted the TPS to .55 volts. The engine started and idled as before but this time I had no obvious rich condition at idle. But when the engine ran for 2 minutes, the rich condition seemed to re-appear. I am getting close but not there yet. I purchased an ALDL to USB cable and am trying to figure out the Tuner Pro application. I will let you know what I find out. Thanks Marc.