Question about 1991 Chevrolet Lumina Apv

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Runs good up to 35 miles'''' then wants to die ,giving more gas

91 chevy lumina'' 3.1-- after 35 miles an hour, car wants to die'' like its not getting gas'' pump all right. but if you pressed down on gas it comes out of it, going about 50.

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Ignition moduel were bad so were cats, dont rule out fuel filter or pump

Posted on Jan 17, 2009

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91 Lumina won't stay running; see lots of same question for same car but no problem solvers....Please help.


On electronic fuel injection pumping an pumping an pumping the gas pedal does nothing without the engine running ! Pushing the gas pedal to the floor will cause the PCM - engine computer to go into clear flood mode .

You have some very interesting ideas here , but not really how it works or is !

The vehicle will go into closed loop fuel control when the engine coolant temp reaches a definded temp an the O2 sensor get hot.

She would run for a couple minutes and die which is open loop when running, closed loop is when the sensors kick and it would die. Pulled spark plugs, they were black meaning no spark. Can only be 2

Black spark plugs indecate a rich condition , over fueled , wet spark plugs indecate no spark .

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Oct 09, 2009 | 1993 Chevrolet Lumina

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1993 lumina 3.1 dies going down the road, but starts again


Did you check the pressure with the vacuum hose to the regulator (if applicable) disconnected? Try driving the veh with the press gauge taped to the windshield. Got to replace the gas filter every three years or 30,000 miles or they clog up. The fuel pump armature may be worn and binding up. (new pump) It may just work okey but no volume. Now we go to the TPS. Throttle Position Sensor. Need a digital volt meter or scope to look at it. Worn or out of adjustment. Don't have the car here so it's not easy assume anything. You need too know the systems on a brand of veh and follow a flow chart of likely causes you develop over the years and keep notes for the next vehicle challange.

Sep 26, 2009 | 1993 Chevrolet Lumina

1 Answer

New fuel pump


check for trouble codes first. it may have a trouble code to lead you in the right direction. Also check fuel pressure.

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when i start my 91 s10 blazer it try to stall so i have to give it gas to keep it running then when i leave out of the drive way and go down the road it has problem get the right amountof gas to go but once it hit 60 -70 mile an hour its fine

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