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Posted on Nov 21, 2017
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OUR CAR KEEPS STALLING, WE REPLACED O2 SENSOR, MAP SENSOR. CAM SENSOR WHICH ACTS LIKE A EGR VALVE. WE REPLACED ONE OF THE COIL PACKS AND REPLACED PLUGS. STILL WAS STALLING AND CHECK ENG LIGHT COMES ON, WE HAD THE ECM MODULE UP-DATED AND WE REPLACED THE THROTTLE BODY. NOW WE ARE BEING TOLD THE NUMBER 5 COIL IS MISFIRING. HELP!

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Robert Wood

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  • GMC Master 6,139 Answers
  • Posted on Nov 21, 2017
Robert Wood
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Ignition switches cause stalling also .

Jose Castillo

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  • Contributor 20 Answers
  • Posted on Nov 21, 2017
Jose Castillo
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Hi, my friend
I'm can see tried something but still keep stalling
look the voltage in the system, if it is on ranges
tries it's changes PCV valve, for new one.
On cylinder 5.
look the the ohm resistance per foot in that cable
If out of order change it
Make sure connection battery is o.k.

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  • GMC Master 1,267 Answers
  • Posted on Nov 21, 2017
Ryan Lutton
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What code is the CEL pulling? I6 engine? Depending on how many miles are on it, coil #5 going bad could just be a coincidence. Why was the throttle body replaced? When it was replaced, was the battery disconnected?

4 Related Answers

Anonymous

  • 255 Answers
  • Posted on Apr 18, 2009

SOURCE: no spark but turns over replaced ignition module,coil,ecm

could be in the crank position sensor

just a thought shack

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Randy Ohler

  • 14585 Answers
  • Posted on Nov 15, 2010

SOURCE: 95 5.7 gmc sierra runs bad under load relaced ecm

This engine may just be wore out. Did you check the compression?

Anonymous

  • 178 Answers
  • Posted on Mar 15, 2011

SOURCE: i have a 88 gmc

the idle air control actuator is a common problem in this type of fuel injection an is mounted in the throttle body also the map sensor should be on top of intake make sure is connected right and have full vacum if so just tap on it with engine running and will miss if it is faulty please let me know if this helped or need further assistance i'll be glad to help.

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Dec 08, 2011

SOURCE: 1995 gmc sierra 5.7 350. rough idle in gear when warmed up poor fuel miledge. changed vacum lines between throttle body and pvc,t-body and evap can. purge solenoid ,egr and map sensor.egr engine code

It sounds like you may have low compression in one or more cylinders, suggest you run a compression test, this should always be done when this condition exists and igintion is not source of problem. This engine also can have issues with intake manifold leaks, use a can of carburetor spray and spray around the intake gasket are to cylinder head, if a leak is present then the idle change when you hit the leak.

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