mandrake001x
New Member
- Joined
- Dec 17, 2013
- Messages
- 6
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1990
- Make / Model
- ford
- Transmission
- Manual
I have a 1990 bronco II 2.9L 4wd 5 speed. I have recently noticed that when I apply the brakes with the clutch in, the engine revs about 500 rpm higher. New vacuum assist installed, several new brake lines installed... it appears to be intermittent... any suggestions, maybe the proportioning valve in the brake lines ????? any help would be appreciated....