If the engine is reving higher and the vehicle is slowing down, it sounds like the transmission is slipping. Also, if the fuel pressure is low, it wouldn't cause this type of problem. It may cause a miss or the engine to quit at times, but not the engine to rev higher and the car slow down.
Start with making sure the transmission is full.
Let me know what you find.
Friday, November 13th, 2009 AT 10:51 AM