About Paul Expertise Almost anything about most European cars BMW, Mercedes ,Audi ,VW and general auto-ectrical questions
Experience I have been a mechanic in the U.K for 15 years on European cars I am ATA qualified (U.K equivalent of ASE). Also home and diy mechanic for family and friends now re-located to the U.S
Expert: Paul Date: 7/20/2008 Subject: reving higher?
Question hi ya. please could u tell me why my engine keeps reving higher and higher by its self. if u blip the gas it wil come down then start rising randomly.i have tigra
Answer Hi Julie, when you open the throttle, it allows air to draw in and it is this air that causes the revving. If you have a high rev then you have a leak of air either a vacuum or inlet manifold gasket. Start the car and listen for a hiss (this is where the air will be rushing in ) look for open ends of vacuum lines. Alternatively, it could be a faulty idle speed control valve, but look at this second as i follow the rule of thumb, cheapest first and work up. let me know what happens[ _ Paul
