Sticky Idle

[Gysgt Guy]

Alright I just got my tb put back together with new tb shaft seals and biss screw. After starting it up, if I accelerate from the pedal it climbs ok but takes awhile to come back down and hovers right around 2000-2500. But, if I give it throttle from the tb it decelerates just fine and returns to 800rpm.

No vacuum leaks, the throttle cable isn't excessively tight or loose at the the tb, and the ISC is less than a month old.

Any ideas??

 

[Absit]

Check for throttle cable tension and binding, then inspect your carpet/floor mats near the accelerator pedal.

 

[brownfinger]

Did you properly adjust the BISS, TPS, closed throttle switch, and ignition timing? I recently (yesterday and over the previous week) replaced the throttle body on both of my 1Gs with rebuilt units.

It took me a couple of hours of playing around to with all of those various adjustments to get it all right. (On the 1G the closed throttle switch is seperate from the TPS. It actually holds the throttle plate open a little bit: If you change that setting, you need to readjust the TPS; and the BISS, again! I know the 2G closed-throttle switch is different, and I can't help you with it.)

Even after I got everything dialed-in, I still had to drive the car around the neighborhood over and over, randomly turning it off and on, letting the computer re-learn the new settings, before it started to run right.

 

[Gysgt Guy]

Did you properly adjust the BISS, TPS, closed throttle switch, and ignition timing?

The TPS and closed throttle switch wouldn't be a factor since it only does it from the accelerator right?
But I did spend some time adjusting and still the same symptoms.

Check for throttle cable tension and binding, then inspect your carpet/floor mats near the accelerator pedal.

What am I looking for near the pedal? Im not seeing any bindings.


On a new note...I drove it around the neighborhood testing it, and when i push the clutch in and let off the gas it instantly shoots up 1000-1500 RPM's then starts dropping. The higher the RPM's get when i push the clutch, the less of a spike occurs.