Question about GMC Vandura

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96 GMC Vandura idle problem and sometimes acceleration problem

We have a idle problem when using our lift gate. It starts but when we use the lift gate it stalls out. It's like it idles way to low. It is hard to start sometimes, though. We have done a complete tuneup and just recently had new heads put in. It is a rebuilt motor with only 17,000 miles on it. We also have a problem while driving sometimes you can have the pedal all the way to the floor and it wont accelerate. Other times it does ok. When the acceleration problem happens the check engine light usually comes on. Can you give me any advice on what I'm looking at.

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  • GMC Master
  • 42,084 Answers

Accelerator pedal position sensor/ throttle position sensor/ motor
idle problem under load could be idle rpms too low
ICT sensor
run the fault codes

Posted on Apr 24, 2017

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 375 Answers

SOURCE: GMC Vandura 1983 6.2 litre diesel automatic transmission oil GMC Vandura 1983 6.2 litre diesel automatic

Your dip stick tube is your fill tube for your transmission . Make sure your transmission oil is at opperating temp before servicing some instructions are written on the dip stick , Use a small funnel , Add a little at a time (cup). Use the proper fluid , check regularly

Posted on May 18, 2008

  • 141 Answers

SOURCE: Engine runs rough after about ten minutes /idles really low

Just trowing some suggestions out there, but, I would check the idle air control valve (solenoid) or the throttle position sensor. If they check out then my last guess would be the map sensor or the vaccuum to the map sensor. Hope I was able to help. Best wishes.

Posted on Jan 17, 2009

  • 2039 Answers

SOURCE: engine starts but low power during acceleration

it look like a mass air flow sensor the sensor that goes in the air filter usual sentra symtom no power stall when realesing the gas pedal pierre p.s go to a wreaker scrap yard bye the piece it will work

Posted on Feb 14, 2009

csmock132
  • 4669 Answers

SOURCE: 96 gmc 1500 4x4 with vortec motor

Timing is not adjustable. You do however need to turn the distributor to set the cam/crank correlation to keep the check engine light off. Although you need to hook it to a scanner to be able to set this.

Posted on Mar 07, 2009

emissionwiz
  • 75814 Answers

SOURCE: 1999 Ford Windstar, idles rough, slow acceleration

sounds like a large vacuum hose was knocked off the engine when they pulled the trans out, have that checked.

Posted on Mar 26, 2009

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1989 5.7l GMC Vandura Dies


No worries whatsoever. I'll keep an eye out for your return.

Regards

Geordie

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GMC Vandura 1983 6.2 litre diesel automatic transmission oil GMC Vandura 1983 6.2 litre diesel automatic


Your dip stick tube is your fill tube for your transmission . Make sure your transmission oil is at opperating temp before servicing some instructions are written on the dip stick , Use a small funnel , Add a little at a time (cup). Use the proper fluid , check regularly

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