I have a 2003 Ford Escape, 2.0L, manual transmission.
I am experiencing a very strange issue.
If I am driving (moving), and shift into neutral, the RPMs will rise up to 3500 about, and stay there till I come to a stop. I am in neutral the whole time. The car idles fine, but if I shift into neutral while the car is moving (while shifting between gears), or if I shift into neutral before coming to a stop, the RPMs rise much too high. But as soon as the car comes to a stop, the RPMs return to normal...
I replaced the idle air control valve, and throttle position sensor, and there are no engine codes. I did disconnect the battery after replacing the components, to clear the computer. No vacuum leaks that I can find either... I can't imagine the connection between wheel speed and idle speed..!!
Any ideas on where to start looking?
UPDATE - RESOLVED - Replaced plugs and wires and issue was resolved.