High engine rev at all times

My car is reving extremely high rpm's (4000) at all times even with start up and driving, goes done during gear change when my foot is on clutch then revs right back up. I have already changed the TPS( throttle position sensor and did not help. What would cause this? I am as a loss? Thanks

Anonymous Apr 29, 2012

On my 2001 Hyundai elantra I have a very high engine rev at all times, I have changes the throttle position sensor, and today changed the idle speed control sensor, prior to changing the idle speed control sensor it was only reving at intervals now it stays revved at 5000 rpm's at all times, we cleaned the throttle body to. Car is manual ******, can someone tell me what might be causing this? I am at a loss,
Anonymous Apr 29, 2012

Not a idle speed control sensor, it was a idle speed control actuator that we just changed today. If anyone has any idea what would cause this I would greatly appreciate any information. Thank you

1 Answer

Denis D'souza

Contributor 41 Answers
Posted on Jan 25, 2018

Denis D'souza

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Joined: Jan 25, 2018

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Check for a vacuum hose leak

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Jim Goldsmith

2005 Answers
Posted on Apr 22, 2009

SOURCE: Chrysler 3.5 won`t rev past 2500 rpm?

remove the aircleaner intake hose and, check the intake air control flap for free movement

simba2403

32 Answers
Posted on Nov 05, 2009

SOURCE: engine revs go high when changing gears but loss of power on MAGN

throttle body shaft seals are worn do a boost leak test and you will hear the leak
http://www.cobbtuning.com/info/?ID=3481

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