idle problem ??

[csomni]

87 glhs t2 set up. ok heres the prob. starts fine. revs to about 1800,then drops to 1200 then to 900. take it for a ride and coming up to a stop drops to 1200. then at a complete stop down to 900. should it go down to 900 after letting off on the gas. insted of steps 1200 to 900. is there a problem with my speed sensor. any ideas.

[cordes]

Have you pulled the codes? That actually sounds pretty normal, especially until the car is warmed up.

[Juggy]

pull the throttle body off and give it a really good cleaning

---------- Post added at 11:30 AM ---------- Previous post was at 11:29 AM ----------

the ais passage is prolly gummed up

[csomni]

cant pull codes of yet ,need to hook up power loss light to lm. just one of those things i didnt get to in the swap lol. thanks for the input guys

[shackwrrr]

sounds about normal when the computer has been reset recently. Run it for a week and it will get a lot better.

[cordes]

sounds about normal when the computer has been reset recently. Run it for a week and it will get a lot better.

In my experience, LMs take very little time to learn. The SMECs and SBECs can take a while though. I usually have to put 50-100 miles on my SBEC car before everything is settled down.

[csomni]

ajusted the base idle seems to be working better. thanks for the imput guys