1999 Ford Taurus 6 cyl Front Wheel Drive Automatic 124000 miles
During commute driving when the engine get hotter then normal, the RPM becomes excessively high. This will cause hard down shifting in the lower gears when slowing down. In addition, when putting the transmission in park, the engine will sometimes increases to between 2000 and 3000 RMP and will stay there until I stop the engine. I get no codes; however, I went ahead and replaced the IAC valve and TPS. Neither helped the situation. Another symptom is if I am driving on the interstate at 55 MPH with the engine at normal engine temperate, let off the gas and put the car in neutral, the engine will increase between 500 – 800 RPM and stay there for about 10-15 seconds.
have the same problem?
Tuesday, July 27th, 2010 AT 10:09 AM