check your ecu. If it's bad, it can take out your ISC resulting in a high idle.
I'll ohm out the coils on the new ISC to see if they're still OK. They were reading 40 ohms prior to installation. Then I'll see if putting in my spare ECU makes a difference.
What does the dash temp gauge say after warmup?
Temp gauge reads normal after warmup--about 1/4 above the lower limit.
assuming the screw is all the way in...?
Haven't messed with the speed adjusting screw yet--since the idle is so far out of range I figure there's an underlying cause that should be fixed first.
If the water valve is stuck there must be some way to unstick it. I dont know, I havent tried ...yet
It happenend after cleaning the TB so i guess a little crud found its way in there
Crud is a possiblity. Is there a safe cleaning agent that could be used on the FIAV? I know solvent like carb cleaner isn't recommended, but maybe electrical contact cleaner or something. Worth a try.
get out your meter and go through the TPS checks.
I'll do that prior to swapping out the TB.
You say new ISC on order. Do you know the one now is bad? Mine revved low once it went out. I wonder if a fail on another of the three coil-thingies would result is a high idle? Takes all of five minutes to check the ISC with a meter...
I actually already installed the new ISC. I don't know that the old one is bad. The coils were still in spec, but the pintle was a lot looser than the new one. I feel safer with the new one because the higher resistance coils are easier on the ECU drivers. But in any case I'll check the new coils again.
Thanks for the advice gents. I'll also do the curb idle speed inspection before I dig into the TB (don't have a tach-box yet). That includes a timing check, which is also a possiblity I suppose.
I have a car-part TB on its way. After pricing out a new one ($850 <img src="/forums/images/graemlins/zombie.gif" alt="" />) it will give me peace of mind having a spare even if that's not eventually what it turns out to be.
