Question about 2003 Chevrolet Impala

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2003 Chevy Impala LS idles high (2000+ rpm's) in P and N only

Two seperate mechanics have replaced the idler motor but it hasn't fixed the problem.

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CHECK IT FOR VACUUM LEAKS. INCLUDE THE EGR VALVE, VACUUM BOOSTER, INTAKE GASKETS, ETC. ALSO CHECK THE THROTTLE BODY IT MAY BE HELD OPEN BY THE THROTTLE CABLE.

Posted on May 23, 2009

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Posted on Jan 02, 2017

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I have a 2006 Impala the engine is surging at idle and when I driving


Check the vacuum hoses for a leak.

2006 Chevy Impala LS 3.5L Surge Under Load - YouTube

? 3:09
www.youtube.com/watch?v=sD-swFhMORM
Jan 22, 2013 - Uploaded by Gary Castle, Jr
Surge while driving. ... 2006 Chevy Impala LS 3.5L Surge Under Load ... How To Fix Or Prevent Stalling, Surging Or Rough Idle, Cleaning ...

Oct 02, 2015 | Cars & Trucks

1 Answer

How to remove and replace radiator


To remove and replace a radiator is a major mechanical job, requires some quite complete equipment and some mechancal knowledge.
Last time I had my radiator replaced, it took about 2 hours for a proffesional radiator mechanic . Are you sure your really want to do it yourself?

Better then any "explanation", watch these youtube videos:

How to change 2000 2003 Malibu Radiator Part 1 Removal

Radiator Cooling fan assembly repair install Chevy Impala

How to Replace Radiator How to Remove Your Radiator

How To Install Replace Engine Radiator Cooling Fan 2006 12 Chevy Impala



Sep 09, 2015 | 2003 Chevrolet Impala

2 Answers

I have a 2004 Chevy Impala at idle and eights like its bout to cut off


Check for a dirty or bad Idle air control valve. (IAC) you can take most off and clean them out. It may have a lot of carbon in it and not working properly. or it could be bad also. Just clean it out first! Good-Day!

Jul 26, 2014 | 2004 Chevrolet Impala

1 Answer

2005 chevy impala holding high idle


A temp sensor out of range giving a false cold reading can cause high idle . A MAP sensor can also cause high idle by advancing the timing resulting in higher idle .

Oct 07, 2017 | 2000 Chevrolet Impala

1 Answer

2003 impala intermittent high idle with high iac count iac tested good


Before buying a ECM for the car I would do a smoke test on the vacuum line to be sure there is no leaks and causing the idle to very. Hope this helps.

Apr 17, 2017 | 2003 Chevrolet Impala

1 Answer

Where is the idle sensor in the 2000 chevy impala


There is no idle sensor on the 2000 Chevrolet Impala, according to my online resource.

But, there is the following that senses rpm of the engine and thus the idle speed when the Throttle Position Sensor is at 5% or the accelerator pedal is not depressed:

Crankshaft Position Sensor Operation Engine speed is a very important input to the Powertrain Control Module (PCM). Crankshaft speed and position are the basis for many calculations made by the computer. Crankshaft position values are transmitted to the computer by pickup coils also known as Permanent Magnet (P/M) generators, Hall Effect sensors or optical sensors. The Crankshaft Position Sensor (CKP) also known as engine speed sensor is typically located in proximity to the crankshaft.
In addition, the PCM uses the CKP sensor in conjunction with the camshaft position sensor to calculate and perform misfire diagnostics.
Related Symptoms
  • A No Start / Intermittent Start condition - Can be caused by a faulty crankshaft position sensor due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit.
  • Engine Misfire Diagnostic Trouble Codes
NOTE: Engine Mechanical conditions can also create the same or similar symptoms. (Don't overlook basic mechanical integrity).
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Nov 06, 2010 | 2000 Chevrolet Impala

2 Answers

My 2000 chevy impala shakes while driving.i let


It sounds like you might need to replace your motor mounts, or get a tier allignement done. The allignment you cannot do yourself but the motor mounts you can this requires you to place a jack under you engine and undoing the motor mounts then replace them and take away jack.

Jan 30, 2010 | 2000 Chevrolet Impala

1 Answer

Idling to high and engine revs from 1000 to 2000 rpm


lower the idle switch,might have to have mechanic do it if u dont know where it is,wont cost alot,very easy

Oct 18, 2009 | 2003 Honda CR-V

1 Answer

Knocking or pinging noise at idle


check your timing chain or belt might be loose and or your belt tensioner is not working

Aug 02, 2009 | 2002 Mazda Millenia

2 Answers

Idler is too high on start-up, goes up to 2.5-3 rpm. and comes back to normal. just started a week ago. what could be the problem? 2005 Chevy Aveo


I bought my 2004 aveo 49 miles. I've had several issues with the car. But recently I been experiencung high idle at start up and clutching. I change IAC. Plugs and wireds. Nothing worked. Today the high idle became constant. It was a metal bubble flex tube near the IAC unit that goes to the exhaust stuff down behind the motor. It apparently was cracked cause today it broke causing the constant high idle sound like a vacumn. We blocked it off with a stick to get the idle back down to 900 rpm instead of 3-4000 rpm took we can get to auto zone for high temp hose per Chevy dealer. I hope this helps someone cause it was fustrating and costly.

Mar 08, 2009 | 2005 Chevrolet Aveo

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