Engine Performance problem
1991 Ford F150 V8 Two Wheel Drive Automatic 140000 miles
I've got a high idle problem with my 91 F150 V8. My idle is constantly high, anywhere from 1200 - 2000. It doesn't matter if the engine is warm or cold.
I'm also having problems with the truck idling up on its own as I drive it. If I'm cruising down the road, I feel the engine surge and the factory tach shows the engine reving up and down. Also, I've had the engine rev up several times at stop lights, etc.
The trasmission also shifts hard as well. It all started with a high idle, but has gotten worse as described above. It's a 3spd automatic transmission with push button overdrive. My gas mileage is terrible now and the constant high idle is hard on my brakes.
Could this be a vacuum leak. I'm gonna check my vacuum reservoir and see if it's metal and if so if it's rusted.
Any help would be greatly appreciated.
have the same problem?
Wednesday, April 22nd, 2009 AT 7:53 PM