My opinions on *AGED* automatic idle speed system are known and controversial. Contact me off list (brobertson(AT)carolina.net) if you'd like to discuss manual alternative. Requires no modification to engine (manual idle circuit already built into PRV for Volvos etc). Lacks convenience of *PROPERLY FUNCTIONING* automatic system, but I guarantee idle will stay put where you set it. Bill Robertson #5939 (slowly being reduced to pure essentials) >--- In dmcnews@xxxxxxxxxxxxxxx, "vrvader" <vrvader@xxxx> wrote: > I have a question based on my idle. (I have an 81, 5 speed) > > When I start the car it idles as normal (after an initial high idle > and then kick down in a few seconds). As I drive and stop the car > seems to idle fine. > > After about 20 minutes of driving when I come to a stop the car > wants to idle at 1500 - 2000. If I blip the throttle it does not > seem to make a difference. If I rev the engine up close to red line > and let it fall down it tends to drop to around 1000 RPM ( a little > high still but better). > > I have opened the engine bay during one of these high idle sessions > and pushed on the throttle and it did not make a difference so I do > not believe it is based on a sticky cable or such things. > > What may be causing this? > > Thanks in advance for your advice