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87geeinn
11-24-2005, 04:01 PM
At closed loop idle, my 87 GN idles fairly smoothly at around 875-925 rpm, only varying about 50rpms or so in Park. My new Scanmaster says my IAC counts are 00. I see on the IAC reset procedure page that the target range is 20-25. The quick reference has the range as 10-50. I could only get my counts to raise to 05 but that required me to move out the idle stop screw quite a bit and raised my rpm too high to around 1250 rpm. Could I get a little clarification on this? Should I just leave it as is?

ES1
11-24-2005, 04:53 PM
http://www.vortexbuicks-etc.com/
Remember the IAC does not set until the car is turned off.
Make sure TPS is in spec after adjustment.
On the other post about O2s.
They jump all over the place. After you go WOT, check to see what your lowest O2 reading was by hitting the recall button. You want that number to be 790-810 range.
Hitting both buttons at once will show you the MPH that number was recorded at.

kenmosher
11-24-2005, 05:35 PM
Why the link? Same info as on GNTTYPE ...