When I first start my 89 GL touring wagon, it revs up pretty high like an old carbed model (around 3k). Once it warms up (or if you put it in gear) it drops back down to normal. Now, everything that I've ever heard says to not rev an engine when it's cold as it does more damage to it. Is this normal or do I need to investigate?

will rev up to around 2k, then drops down to normal. So does my dad's honda. Revving to 3k may be more than usual, but not a big deal. Driving hard and revving heigh (close to redline) is bad for a cold motor though.

if it's carbureted, there's probably a way to turn down the cold idle. i don't know how with EFI

how is the idle once warm?

there is an adjustment on the side for the throttle body for idle speed. but wam up idle is controled by the valve bolted to the throttle body. check timing and vac. leaks. also temp. sensor.

 

resistance spec. for the idle air motor is around 35 ohms but that does not help much.

if its idling too high when warm, and the engine has beeb serviced before, suppose the throttle cable is a bit too snug?