Question about 2005 Pontiac Grand Prix

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2005 grandprix 3.8 30000 miles just started going down road starts losing power and shuts off indicates disable and something about the throttle disable and when i take the gas cap off it will start but indicates reduced engine power

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CHECK YOUR ACCELERATOR PEDAL POSITION SENSOR.LOOK FOR LOOSE BOLTS OR LOOSE CONNECTOR.THE APP SENSOR IS LOCATED ON ACCELERATOR PEDAL ARM.

Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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On a 06 Chevy Impala 3.5 what do I need to change when the car shuts off and across the dash it says starting disabled service throttle and the oil light come on and it says low oil pressure engine


Newer cars use what is referred to as "Drive by Wire. Instead of a throttle cable that goes to the throttle body, there is a sensor on the gas pedal and another on the throttle body. The signal from the pedal is sent to the ECM, analyzed, and transmitted to the throttle body to perform the desired operation. If something in that chain breaks down, the car is disabled as a safety feature, so that you wouldn't have, say, a wide open throttle issue to deal with. That is what the "starting disabled, service throttle" means. As far as the oil light and low oil pressure indications, if the key is on, and the engine is not running, these are normal indications since there is no oil pressure in the engine when it is not running.

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My car shuts down going down the road with no warning. It starts back.


It could be that your vehicle is engaging the "safe mode" upon restarting. Auto Zone and Advance Auto will perform a complimentary diagnostic check which will most likely identify the issue. The trouble codes are stored and may be retrieved even when your car is running okay.

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try to disconnect the battery entirely with the key in the run position.. then shut it all off and reconnect..reset the computer by turning to run only until all the dash indicators go out.. then try to start..

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O2 sensors can cause this and often they clear up after a good run.

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Was traveling from out of state..stopped and refueled with diesel.. drove appprox.5 miles down the road doing 75mph and started losing power then shut off will not start again


your gelling up you need to change filter and get some diesel 911 and it will start going... if you try the 911 treatment first that might work.

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Sounds like your fuel filter need's to be changed. Start with that and good luck.

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next time it happens try spraying water in mist form around the throttle body if it bogs, replace the throttle body gasket. if it doesn't bog you may have a bad wire wait until dark start the vehicle have someone feed the fuel very slowly and watch for arching from a wire it will be easy to see when it is dark, replace that wire.

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