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Would the idle air control valve if it was bad cause my 2001 Chevy Cavalier to start jerking and jerking usually from a stop but sometimes while I'm driving

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You can test your tps sensor with a multimeter - you'll need to unplug it and find your ground And signal wire first, then plug it back In and back probe these - flip the tb lever to open and close throttle and watch numbers. If you're not comfortable with doing that, have a shop check it before replacing. Throwing parts at a car is playing the lottery - hit or miss.

I'd lean elsewhere. Your idle air control valve sits on the tb housing - turn your car on and write down the rpms it sits at. Turn her off, go ahead and unplug the iac valve and turn her back on - write down the numbers. The rpms should go higher, if not than your iac is probably bad. Don't forget to plug it back in.

Your mass air flow sensor can cause an idle issue, as well; especially at stops. Vacuum leaks. A clogged or dirty egr valve. No codes? Is idle up and down or steady? Any recent changes? These details help.

Posted on Apr 19, 2017

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No , sounds more like a TPS - throttle position sensor problem .

Posted on Apr 16, 2017

  • Valerie Bunish Cortez
    Valerie Bunish Cortez Apr 19, 2017

    Hey Jeff thanks for your answer I took it to AutoZone they said the idle air control valve is bad would that cause the same symptoms as the throttle position sensor?

  • Jeff Armer Apr 19, 2017

    Not while your driving ! An not accelerating from a stop . Once your stepping on the gas pedal the IAC valve no longer has any control over the amount of air entering the engine, you stepping on the gas pedal lets more air into the engine .



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I took my 2001 Chevy Cavalier to AutoZone they said it was a idle air control valve that showed up bad on the computer would that have the same symptoms as a throttle position sensor the jerking

First there is no fault code that tells you to replace any particular part, you must do the troubleshooting for the code or codes received, never take advice from a minimum wage parts person at Autozone, they just want to sell you parts, they are not trained technicians and should not hand out advice that costs you money and wasted time, not to mention you can't return electrical parts.

Apr 19, 2017 | Cars & Trucks

1 Answer

Is an idle air control valve the same thing as a mass airflow sensor in a 2001 Chevy Cavalier 2.2?

no.. maf senses incoming airflow to your intake and the iac controls idle speed

Apr 14, 2017 | Cars & Trucks

1 Answer

1997 cavalier runs fine but when i slow down or stop engine shakes and sputters and dies sometimes but it will start right back up

check the iac valve idle air control valve its on the throttle body needs service. or replacement.

Nov 21, 2014 | 1997 Chevrolet Cavalier

1 Answer


IAC valve - idle air control valve or IAC air passage is pluged also clean the throttle plate and it's bore . Or take it to a repair shop that has the diagnostic equipment to test .
007 Idle Speed Problems Scan Data for Idle

Aug 13, 2017 | 2001 Chevrolet Cavalier

1 Answer

I have a 1999 Chevy Malibu LS. It has "idle system high" reading on PC. I was told to replace idle control valve and that was a dead end. I then replaced the throttle position sensor and the problem still...

ECM might be sending the wrong signal to the Idle control Motor. Verify the signal into the motor. A vacuum leak can cause high idle also, listen for air leaks. Just thought of this, make sure something is not keeping the throttle plate stuck open. Debri or some other obstruction.

Nov 13, 2013 | Cars & Trucks

1 Answer

Why does my 2001 cavalier die when coming to a stop?

If it dies when you are coming to a stop after being on the freeway, chances are the torque converter solenoid is sticking in the transmission.
If it is doing it around town, I would look at the throttle body and idle air control valve. The computer controls idle speed by regulating air flow into the throttle body.

Jan 10, 2013 | 2001 Chevrolet Cavalier

2 Answers

Have an automatic transmission, 2001 Kio Rio. Problems when idling, sometimes high, sometimes low and will stall but starts right back up. I've replaced the Mass Air Sensor, spark plugs, air filter, coil....

It sounds to me like you have replaced everything except the most likely cause of your idle control problem...The Idle Air control. (IAC) (or Idle Speed Control Valve) It is located onthe throttle body and looks like the picture below.


Feb 22, 2011 | 2001 Kia Rio

1 Answer

1997 chevy cavalier 2.4 twin cam engine dogs out when throttling

Possibly bad tpos sensor

Bad idle air control valve

Bad maf sensor

Check the computer codes first before spending any more money on it

Also do a compression check

And check your valve timing and ignition timing just in case.

Apr 05, 2010 | 1997 Chevrolet Cavalier

2 Answers


Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Apr 14, 2009 | Chevrolet 1500 Cars & Trucks

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