2003 Ford Windstar 42000 miles
When startup, the idle is way too high, and for the first ten minutes or so, I can drive 20mph without touching the pedal. When it gets to full operating temperature, then the idle is stable and where it should be. If the engine is anything other than full warm operating temperature, I'll be idling at 1100 at least.
I cleaned the IAC valve, and throttle body and cables. I noticed the IAC valve was fully seated when I was cleaning it and disconnected it, I'm not sure if its supposed to fully seat closed or not. I put my finger in to spring it shut and it closes but springs back open, I think was 1/4" open when not connected. IS THE IAC VALVE SUPPOSED TO BE CLOSED when no power going to it?
I inspected all the vaccum lines, everything looks fine and connected. The engine does seem to make a high whine.
I had the autozone guys check the code and the P1504 came up, but I think that was because I tried to start the engine a few times with the IAC valve disconnected, and by the way, the engine would fire and then shut off.
Yesterday, when warm, I disconnected the Throttle sensor to see what would happen and engine revved high.
Please assist. Thank you.
have the same problem?
Friday, April 11th, 2008 AT 10:20 AM