hello to all honda experts pls help po regarding sa laging mataas na rpm

**mglinigo** · September 1st, 2008 12:19 AM

hello to all honda experts pls help po regarding sa laging mataas na rpm ng 99' civic a/t. umaabot po sya ng 2500 rpm kahit naka neutral. madalas after ko pinatay ang engine nahihirapan ito mag start ulit. wait muna ako ng 10-15 mins.. ano po kaya problem?

**boylet** · January 29th, 2009 06:29 PM

Originally Posted by mglinigo

hello to all honda experts pls help po regarding sa laging mataas na rpm ng 99' civic a/t. umaabot po sya ng 2500 rpm kahit naka neutral. madalas after ko pinatay ang engine nahihirapan ito mag start ulit. wait muna ako ng 10-15 mins.. ano po kaya problem?

Check the idle screw baka mataas and adjust. If its erratic or fluctuating at idle (neutral) possible cause is the RACV (Rotary Air Control Valve), mahal ang RACV so wag pakialaman, Starting problems naman maraming cause, pwede relay hindi sya nagcocontact, usual problems to ng honda.

**v6dreamer** · January 30th, 2009 04:29 AM

Of course, with that RPM your chocking that car, so whenever you start it again...gwaak

.

Carburated or injector?

High idle could be caused by a leaking vacuum pipe, a sticking idle control valve, a sticking throttle lever or butterfly, a sticking or damaged fuel pressure regulator, a faulty coolant temperature sensor, any number of things.

If your vehicle is fitted with O2 sensors then one of them could be switching too low and so causing a higher idle than usual, but this would only be apparent once the engine had warmed up.

The first thing to check is all of the vacuum pipes and rubber hose(EGR, fuel pressure regulator, brake servo hose, etc) basically any pipe that is connected to the intake or throttle body because these are popular cause of high idle.