Question about 2003 Pontiac Montana

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Can you check the mass air flow sensor?

Van is hard to start and stalls sometimes when you stop at a stop sign

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  • 645 Answers

There is 2 kits from lc engineering that will help you bypass a mass air flow sensor. Here is the site. http://209.250.27.45/m1webgear/Produ...artRevisionID=------------------------------------------------------------------------
Car cable & OBD Connector

Posted on Dec 07, 2012

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6ya6ya
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Posted on Jan 02, 2017

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  • 24 Answers

SOURCE: 94 pontiac transport no start

some of those vans came with an anti-theft passlock system, it's a small chip in the key-- if equipped, the sensor in the ignition lock cylender failed alot with the early systems, with similar symptoms

Posted on Jul 21, 2009

SOURCE: 1999 pontiac grand prix . will not run

If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
See http://www.greatautohelp.com

Posted on Oct 17, 2008

ElDopa
  • 295 Answers

SOURCE: CODE PO102 after Mass Air Flow Sensor replaced

Most faultcodes don't disappear automaticly, the have to be 'reset' manually after repairing. It sounds like the code didn't get erased after replacing the MAF. You could try to disconnect the battery for 10 minutes (disconnect and reconnect the negative (-) pole), which should erase the code.

Whenever the engine light still comes back on after that, there probably still is some (other) problem ...

Posted on Aug 24, 2009

emissionwiz
  • 77544 Answers

SOURCE: how do i replace mass air flow sensor on a 1999

u don't replace the whole sensor just the actual heated wire part, that is held in place by two star screws, see picture.
A-1 CARDONE Part # 7450015 {[Mass Airflow Sensor] Reman.} $142.00


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Posted on Jan 29, 2010

  • 617 Answers

SOURCE: Location of mass air flow sensor, 2000 Grand Prix GTP

3.1 or 3.8 motor, mass air flow is in the fresh air (goes from air cleaner to engine)

Posted on Feb 07, 2010

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2004 PONTIAC GRAND PIX STALLS WILL NOT START BACK UP SOMETIMES STARTS AND RUNS GREAT THEN WILL JUST STALL WILL NOT START FRO DAYS


Fuel filter, fuel pump, fuel pressure regulator, Idle air control valve, mass air flow sensor, faulty plugs, faulty injectors. If there is any codes set that is where I would start. The check engine light code is going to tell you somewhat what is going on. There are too many different things that there can be. My guess is mass air flow sensor or something with the fuel.

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It sounds like the idle control valve and/or the mass air flow sensor. The scan will accurately pinpoint the problem.

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. Check the Mass Air Flow Sensor voltages. Verify good battery voltage to the Mass Air Flow Sensor on the White/Black wire. Verify good grounds for the Mass Air Flow Sensor on the two Black wires - look for 0.05 volts or less to be ok. Check the output voltage from the Mass Air Flow Sensor on the White wire - specification is less than 0.5 volts key on engine off and 1.0 - 1.3 volts at warm idle. The Green/Orange wire at the Mass Air Flow Sensor is not used. The Mass Air Flow Sensor can test good and still be defective.

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If the mass flow sensor was bad, the check engine light should of came on giving off an engine code. To remove the mass flow, disconnect battery neg cable, then pull of the wire harness and pull out mass. You will probably have to remove the air intake hose.

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