Question about 2000 Mazda B-Series

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My 2000 b2500 revs so high when idling. what could it be? the IAC,TPS?

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Your engine has a vacuum leak, causing the idle to peak. Check all the hoses under the hood for vacuum leaks. You have a leak some where for sure. Thanks.

Posted on Jan 30, 2010

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Posted on Jan 02, 2017

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2001 ford focus se sedan revs to high after replacing icv and tps


It sounds like the TPS was installed improperly..It has to be set in place with no tension on the spring loaded mechanism...This will cause the throttle to rise...I don't know what problem you had before replacing these components but nothing should magically go bad while doing it unless it is a faulty new part...Try removing the TPS ..,INSPECT it to see the plastic lever operation is in correct timing with the lever it is mounted to ...Look close with a light to see what I am describing then carefully connect it....I've seen it happen before...If not the IAC..( idle air control sensor )..will cause it to have a high idle if it is bad....),,maybe it was accidently disconnected .....GOOD LUCK..

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1 Answer

Idles high what can i do.


Get the IAC valve checked.Remove the Iac valve from the throttle body. It is on the side facing the front higher than the tps sensor. It has a 4 wire connector. Make sure this is clean. If it is dirty/dusty then clean it. This valve controls the idle speed. After cleaning it turn the ignition on with the engine off. The Iac should move in and out to find the stops. If it does not move you have either bad wiring, Iac or pcm. Most likely is Iac.
-------- For safety measures,before removing the IAC make sure you don't have any vacuum hoses unplugged. Next make sure the throttle blade closes all the way.Iac is short for idle air control valve. ------- Thanks.Helpmech.

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