Haibeck PROM Idle - ZR-1 Net Registry Forums

gbmidyear66 · 06-10-2010

I have been trying to uderstand why I can't get my engine to idle below 800 RPM. I bought an AutoXray and I now understand why.

The desired Idle is indicating 750 RPM. I had always understood desired idle was 650 RPM. I have a Haibeck Prom (scanner ID is 2457) - there is no indication on Marc's site that he boosted the Idle speed.

What are others with the Haibeck PROM getting?

My TPS and IAC are good, so looks like I don't have a vacuum leak.

06-10-2010	#1
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 252	Haibeck PROM Idle I have been trying to uderstand why I can't get my engine to idle below 800 RPM. I bought an AutoXray and I now understand why. The desired Idle is indicating 750 RPM. I had always understood desired idle was 650 RPM. I have a Haibeck Prom (scanner ID is 2457) - there is no indication on Marc's site that he boosted the Idle speed. What are others with the Haibeck PROM getting? My TPS and IAC are good, so looks like I don't have a vacuum leak. __________________ [SIGPIC][/SIGPIC] __________________ 1990 Corvette ZR-1 #2824 4.10's, Custom PROM, Flowmaster, Top End Port NCRS BC Chapter