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I have a 97 chevy and my truck is ideling rough so with truck running i unplug the maf sensor and truck died instantly plugged back in fired right up and also with truck running i unplugged iac agian truck died instantly plugged back in and truck fired up does this mean that my MAF and IAC are bad?

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1 Answer

The MAF Sensor measures air flow & temp,unplug it shuts off

The IAC-idle air control-unplug shuts off

It means you need to pay a professional to find a problem

Posted on Dec 03, 2014

  • 2 more comments 
  • Josh j Dec 03, 2014

    I know just cant afford it right now

  • Anonymous Dec 04, 2014

    Okey Sorry about that No it does not mean those parts have failed Vehicle has to be tested

  • Josh j Dec 04, 2014

    Thanks for the advice but it has a ton of problems i dont know what to to

  • Anonymous Dec 04, 2014

    It doesn't have many problems Just have to know how to find & fix those you are having a problem with

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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ourhowse
  • 2007 Answers

SOURCE: Will not run smoothly when engine warm unless MAF

I would guess you pretty well havew it figured out. Change the MAF sensor.

Posted on Dec 24, 2009

  • 63 Answers

SOURCE: 1994 ranger 2wd, 4.0 engine if maf sensor is

check the map sensor.

Posted on Jan 04, 2010

zaldyboy01
  • 293 Answers

SOURCE: when i plug in maf sensor camaro idles from 500 to

Check all the vacuum lines for leaks, and also the timing, make sure its right.

Posted on Mar 10, 2010

dttech
  • 4803 Answers

SOURCE: I have a 2002 Ford

The "IAC" is not a sensor. IAC stands for Idle Air Control - it is an electric solenoid. These are not supposed to be "cleaned". If someone cleaned it, that is most likely your problem. You will most likely have to replace the IAC and get the engine to idle correctly so it will not stall at stops. This is a common problem for Ford 3.0L engines even if the IAC has not been cleaned.

Posted on Apr 11, 2011

skychief2001
  • 21873 Answers

SOURCE: Why is my Grand Prix surging/stalling when ideling?

If you did not disconnect the battery and drain the voltage from the ECM, it could be using old settings when the problem existed.
When a problem occurs, the computer tries to correct it or find new settings to work around the problem. When you fix a problem you have to clear the codes and sometimes erase the memory from the computer to allow it to start back at the factory settings.
When you disconnect something and the check engine light comes on, the computer goes into limp mode and uses values for the sensors preset by the factory. The car will almost always run rich to ensure the driver can get back to a place for repairs.

Posted on Aug 25, 2012

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