1991 4Runner V6/5-Speed Manual 4x4.

My truck is now at 317,000 miles. Still has original motor, never rebuilt (that I know of). Still has most of its original horsepower; doesn't burn or leak anything; and still gets about 16city/19highway with 31x10.5's.
I use the truck mostly as a daily driver but sometimes I get to do a little 'froadin.

Anyhow, yesterday I noticed the engine was idling really high. Like about 1300-1400rpm.
Normally idles at around 800-900 or less, I believe.

Haven't noticed any other changes, just the high idle.
No warning lights, oil and temp are OK and the truck seems to be running normally.

Any suggestions on what it could be?

Thanks

Last edited by distilled; 02/20/05 08:57 PM.