RPM issue

ALFREDM8702

MEMBER
2001 CHEVROLET S-10
13,000 MILES

I have a 2001 chevy s10 4.3 v6 when im driving it at a slight incline the motor seems to rev up and down very fast and if I barely tap the brakes it goes away what could be the issue?

Tuesday, August 28th, 2012 AT 8:59 PM

4 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Likely to be a fault with the idle control. Check the IAC and throttle body for dirt accumulation.

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Tuesday, August 28th, 2012 AT 9:30 PM

ALFREDM8702

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109 POSTS

Ill try that someone said that the brake switch had something to do with it cause it somehow controls the torque converter lock up or something does that sound right? Or just plain dumb?

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Wednesday, August 29th, 2012 AT 3:49 AM

KHLOW2008

MECHANIC
41,815 POSTS

It is possible but it is best to start with the basics and easiest to get done first. After all cleaning up dirt accummulations can only do you good.

Ensure the coolant level is correct, the cooling system plays a part in engine idling condition as well.

If the MIL (Check engine light ) is indicating, retrieve the trouble codes.

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Wednesday, August 29th, 2012 AT 10:27 AM

MIKE H R

MECHANIC
3,094 POSTS

I agree with KHLow2008, Most likely will be in the throttle control unit.. Sometime even when you clean it it will not work correctly and have to get another one.

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Tuesday, October 16th, 2012 AT 8:42 PM