Engine Performance problem
1999 Ford Taurus 6 cyl Two Wheel Drive Automatic 145000 miles
Hi - All. I have a 1999 Taurus (3.0 with DOHC) that is (sort of) acting as if Cruise Control is on all the time. I replaced the Idle Control Valve which didn't help.
Detailed explanation of symptoms: When stopped at idle, the car idles fine around 800 RPM. And the car accelerates great. However, once I am up to speed, the car holds it's speed as if the cruise control is on. (Cruise control is off however - well I havent' turned it on anyway) If I shift the car into nuetral while travelling at 50 MPH or so, the RPMS shoot up and stay there. If I'm going down a slate grade (in nuetral), so the car keeps speed up, the RPMs dont' drop. However, if in nuetral and the car is decelerating, the engine RPMs slowly go down. Just as if the engine is "tied' to the speed of the car. So it's like Cruise Control is on, but if it was really on, I would think it would increase RPMs as the car decelerated in order to try and get it back up to speed. I plan to disable cruise control (I'm assuming that will be pretty easy?) To see if it is related, but figured I'd throw this out ythere and see if anyone had any thoughts. VERY CONFUSED!
have the same problem?
Friday, June 19th, 2009 AT 11:48 AM