In Reply to: I am not sure we have an "idle switch", there is.. posted by michael on September 27, 2001 at 11:35:20:
" First.....let's assume that you have checked for vacuum leaks/etc,,
> and that disconnecting
> the 02 sensor doesn't fix the problem.. (i.e. the fuel mix, 02
> sensor, and base CO are correct!)
> What you have is an out of sync idle system.
> What you need to do is this ( READ CAREFULLY)..
> Remove the connector from the IDLE SWITCH on the throttle body..
> (Not the IDLE VALVE.. the little black SWITCH)
> Inside the harness connector you will see 3 terminals.. ok.. plug it
> back on the switch..
> now look from the exhaust ( read: passenger) side of the car at the
> linkage of your
> throttle bodies near the center of the engine right near the valve
> cover... You should
> see one LARGE screw (sometimes yellow in color), found it ??!!~?
> Good .. proceed...
> Run the car and get it FULLY warm... now shut it off...
> Disconnect the 02 Sensor.
> (you can disconnect it by finding the plug located under the shelf
> that the coolant
> overflow reservoir is sitting on)
> Remove the switch connector... and bridge ALL THREE terminals witha
> a bent paperclip
> or wire or something... I make a little tool from a paperclip that
> looks like a weird "W"
> Start up the car and use the big screw to adjust the idle speed to
> 940-950 rpms
> Once adjusted, shut off car.. remove jumper.. reconnect 02 sensor and
> reconnect the
> idle switch... start car... problem should be gone"