i have a 4x4 loom on an escort turbo, the car runs sweet , but occasionally the revs will rise, and my brakes feel very solid , almost zero pedal, then if i turn it off , wont start again until bump started , i cant actually start the car with the key , has anyone got any idea at all what this could possibly be as im ready to pull my hair out .

please help guys .

ok i left the car for 30 minutes then tried to start it up , wouldnt start , so i pressed the acc pedal and put it in reverse , tried again and she slowly started , sounded like misfiring, but as soon as i pressed in the clutch she was revving at 3k and again the brakes were solid, is this servo related ?