When I am approaching a stop light or sign and I push the clutch in and coast to a stop, it is taking my car a pretty long time for the idle to go down to normal rpm's. And when I rev it up it will do the same thing. After is finally slows to the correct idle rpm's it will stay there and the car idles fine cold or hot. And it doesn't idle high or anything or stay at any one point. It just takes a long time to go from around 1k -1.5k down to normal idle. any ideas what would cause this?

 

really...... anybody?

 

How long is a long time?

 

I too have the same problem. The car will idle around 1500-1700 and takes about 6-8 seconds to idle back to 800 rpm. If I blip the throttle it seems to help it return a little faster. Drives me nuts.

 

IAC....

 

Clean or replace your IAC, then set it with the post on the technical article on the main page.

 

ok i'll try that and see if thats the problem.

 

Thanks for the info. I will give that a shot.

 

did adjusting the IAC help? I have the same with my 5.0 tpi. sometime it'll stay at 11-1500 and sometimes it drop to 750 pretty quick. It seems that if even if your just rolling it'll stay at 1100 and then calm down when stopped.

 

Same problem here... Maybe this thread will turn into a sticky?... The IAC is pretty spendy for a little part, I would like to verify it works before throwing away 70+ dollars.

 

i bought mine for $25 from Azone, that might be my problem

 

Take the IAC out and try cleaning it first, (carb cleaner, etc) they get pretty carboned-up sometimes. Make sure not to damage or loose the gasket, then install and adjust per tech articles on main page.

 

I decided to order a new IAC since it is 22 years old. I also have a new 52mm TB coming. Should have things sorted out in the next couple of weeks. I will post and let you all know how it turned out.

 

I had the same problem,

Check if the spring that returns the blades back are not tires. Accelerate the car slowly to the 2500RPm, remove your foot from the pedal softly. Quickly go look at to TB and see of the lip of the Tb is back against the adj. screw. If is not that is probably the problem. I got a carb return spring and that fix my problem.

hope this helps.

 

Minimum air set incorrectly, reset minimum idle speed.