It's been quite some time since I last posted, and I thank all of you who gave my son and I guidance on repairing his 2.3L 89 Mustang with the hole in the intake manifold that caused it to act like the head gasket was blown.
Re: 89 Mustang 2.3L with leak in intake manifold.
We finally got our timing problem figured out and got the car to start... but that's where our problem begins. We think we put everything back together as it was when we took it apart, but when we start it, the engine races to 4,000 rpm and will not slow down, so we have to shut it down.
We didn't do anything to the throttle-body, just removed it as a unit and put it back on as a unit, with new gaskets. We had a minor timing problem when we first replaced the timing belt, so we took if off and reinstalled it correctly, and were able to get it to start by making a minor adjustment in the timing at the distributor. We've checked for vaccum leaks and the throttle-plate moves easily, and the linkage seems to be functioning properly.
Anybody have any thoughts on what we did wrong that caused this over-revving at start-up?
What do we need to do to fix this?
Is this something that we'd be better-off taking the car to a repair shop to figure-out and fix?
Is it possible that, somehow, the EEC/ECM may have had a code reset to WOT? I don't think this could happen because all of the work was done with the battery cables disconnected and the battery removed from the car, but that seems to be what is happening.
Thanks for any suggestions you all may have!
Lee