revving

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...

I just got my 98 ranger so i haven't worked out all the kinks in it yet I found out that the throttel cable on it is longer than it should be an really looks like a cable they would put in a lawn mower...well when i press my clutch in the engine will rev a lot to the point where it sounds like...