Hi Guys-
After Spring cleaning and tuning, my numbers in Park (closed loop) are good (OTC scanner):
BLM - 131
MAF - 6
IAC - 14
TPS - 42
However, the idle varies 975 - 1050 RPM which seems at least 125 RPM too high according to posts I have read here. Car idles fairly smooth and runs well.
I have played around with various combos of IAC and TPS but the best I could get was 950 - 1000 RPM.
I would appreciate any helpful ideas you might have or any other info you need from me. I will be taking car in for TEST only smog (California) and want to ace the test.
If you think the issue may be the chip or ECM (both original stock), how can I tell which one is bad (I do not have access to an oscilloscope)?
Only one other thing might be relevant...after 7 mile test drive, shut it off and immediately tried restart...it would not start. I unplugged and replugged ECM power and it started.
Thanks,
Steve
onslow@myway.com
'86 T-type; Walbro 340M, Racetronix hotwire, Kenne Bell dual exhaust, valve cover breathers, AC R43-TS plugs, new IAC, crank sensor, coil pack, ICM.
After Spring cleaning and tuning, my numbers in Park (closed loop) are good (OTC scanner):
BLM - 131
MAF - 6
IAC - 14
TPS - 42
However, the idle varies 975 - 1050 RPM which seems at least 125 RPM too high according to posts I have read here. Car idles fairly smooth and runs well.
I have played around with various combos of IAC and TPS but the best I could get was 950 - 1000 RPM.
I would appreciate any helpful ideas you might have or any other info you need from me. I will be taking car in for TEST only smog (California) and want to ace the test.
If you think the issue may be the chip or ECM (both original stock), how can I tell which one is bad (I do not have access to an oscilloscope)?
Only one other thing might be relevant...after 7 mile test drive, shut it off and immediately tried restart...it would not start. I unplugged and replugged ECM power and it started.
Thanks,
Steve
onslow@myway.com
'86 T-type; Walbro 340M, Racetronix hotwire, Kenne Bell dual exhaust, valve cover breathers, AC R43-TS plugs, new IAC, crank sensor, coil pack, ICM.