2001 GMC Sonoma 6cyl 4WD
Starts and runs fine while idling. When it gets to ½ a tank of fuel it runs like crap. Push on the gas nothing happens, bogs down and you have to very lightly press on the gas to get up any speed. If you stop the vehicle and restart it will run fine for a bit then resume the sluggishness.
Also noticed this same behavior with a full tank of gas when the vehicle is hot.
Doubt it is the fuel pump, CERTAIN it is not the fuel filter. I’m thinking vacuum or something because that’s the code that’s popping. Where do I start?
Beginning of the day when vehicle is cool seems to run OK.. I wouldnt say good I can feel some SLIGHT hesitation but not dangerous at all. As long as I'm running around town I hardly notice it at all. It's when the fuel tank gets below 1/2 or the vehicle gets hot that I see a real problem. No acceleration, wont get out of the way of it's self.
Starts and runs fine while idling. When it gets to ½ a tank of fuel it runs like crap. Push on the gas nothing happens, bogs down and you have to very lightly press on the gas to get up any speed. If you stop the vehicle and restart it will run fine for a bit then resume the sluggishness.
Also noticed this same behavior with a full tank of gas when the vehicle is hot.
Doubt it is the fuel pump, CERTAIN it is not the fuel filter. I’m thinking vacuum or something because that’s the code that’s popping. Where do I start?
Beginning of the day when vehicle is cool seems to run OK.. I wouldnt say good I can feel some SLIGHT hesitation but not dangerous at all. As long as I'm running around town I hardly notice it at all. It's when the fuel tank gets below 1/2 or the vehicle gets hot that I see a real problem. No acceleration, wont get out of the way of it's self.