Question about Cars & Trucks

1 Answer

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?

Posted by on


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



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 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

  • 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

  • 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

  • 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

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Why is my truck ideling and running so ruff ? But when I unplug the MAF it runs fine

Check your wiring harness and connector for defects, and have your MAF checked for integrity. Sounds like the sensor is sending a bad signal to the ECM when plugged in and the ECM automatically switches to default over ride when it sends no signal.

Mar 06, 2015 | 1999 Chevrolet Silverado 1500

1 Answer

1996 GMC jimmy rough idel and dieing when driving.

i have seen many strange things happen with the distrib cabs on these

Aug 22, 2012 | 1996 GMC Jimmy

1 Answer

Flooding on startup and has slow acceleration. Pulled the MAF? sensor on the back of the air intake at the filter and it does run better but slow power. My truck is a 97 with a 4.6 V8. Also has a slightly...

your on the right track, replace MAF then stop by any good parts store (Autozone, Advance, etc..) have them do OBII scan (fault scan) they do it FREE

Mar 15, 2011 | 1997 Ford F150 Regular Cab

1 Answer

My 2003 PT cruiser's engine light came on, then the car started running extremely rough. It became so bad, I had to pull over. Sitting idle, it seems to idle a little rough, but when I gas it gas, it would...

Find your air mass flow sensor in the stiff collar of the air ducting immediately after the air filter. Have the engine running and disconnect the plug to the MAF. If this makes the car run evenly again you need to replace the broken MAF. The misfire on plug 4 I think is a downstream event of the MAF not sending the right info to the ECU and consequently not providing the right fuel / air mix to the engine

Jun 07, 2010 | 2003 Chrysler PT Cruiser

1 Answer

1985 corvette

you might want to replace the plug end. I had a 99 neon with the same ploblem changed the sensor but the plug was shorted, changed that and it run great ever since.

Jun 26, 2009 | 1985 Chevrolet Corvette

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

59 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

76132 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides