my ford escort keeps revving up when i change gear what could be wrong? on 1999 Ford Escort

I have changed the throttle semsor, the air flow mass sensor and the idle valve but none have worked

by in Tacoma, WA on April 03, 2013
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3 answers 4 comments
ANSWER by , April 03, 2013
poss vac leak, do you have any codes?
COMMENT by , April 04, 2013
sorry there are no codes
ANSWER by , April 03, 2013
Agree with greg, pcv system on the 2.0 SOHC engine gives a lot of problems. Dont know which engine you got!!!!!
COMMENT by , April 04, 2013
it a 16v 16L
COMMENT by , April 04, 2013
NO, not in a 1999 Escort! Dont matter anyway. Tell you what you need to do, take it to a mechanic that can check it out for you hands-on!!
ANSWER by , April 04, 2013
Manual or auto trans.? When sitting still does the idle race or is it normal? How many miles on it? Clutch slipping?
COMMENT by , April 04, 2013
its a manal and i think it is the clutch because you casn put it in to gear and then take your foot of the clutch and the car will still run