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Hozer 88GTConv · 08-23-2002, 11:34 PM

One thing I noticed you said was "once the thermostat opened" it idled rough.
That's when you O2 sensors start talking to your computer. They are open looped until then.
Have you checked/replaced them? Are they OEM? Just an idea...Good luck.

08-23-2002, 11:34 PM	#5
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	hmmmm... One thing I noticed you said was "once the thermostat opened" it idled rough. That's when you O2 sensors start talking to your computer. They are open looped until then. Have you checked/replaced them? Are they OEM? Just an idea...Good luck. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy