1999 Chevy Tahoe 1999 chevy tahoe vortech

1999 CHEVROLET TAHOE
124,000 MILES • V8 • 2WD • AUTOMATIC
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BEDGE1968
  • MEMBER
  • 1 POST
my engine tries to die after I drive 2 or 3 miles. Like it is starving for gas. I replaced the fuel pump 10 mo. ago and have heard the whining of the pump all the time now. I replaced the fuel filter and added some Heat to rid the tank of any water. I don't have any check engine lights that come on. So no sensors are failing me to my knowledge. I know thw fuel pressure regulator may be a problem but I can't check the fuel pressure(55 to 60 lbs) without the aide of a pressure tester. Other than bad wires what else is there to check? The Tahoe starts and runs fine the minute you turn off the motor and start it back up again but then 2 or 3 mi. down the road it starts to buck like a bronco if it is getting 3/4 throttle. It has decrease of power as well.
Sep 25, 2008 at 1:45 PM
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2CARPRO JACK
  • Experienced Mechanic
  • 11,533 POSTS
At that mileage, start with a tune up (Delco parts) to eliminate the possiblity of bad ignition parts like you suggested.Does it only have its issue in gear? if yu let it warm up in the driveway is it ok? only when given throttle does it buck? A fuel pressure gauge would be very helpful, you can rent them at some parts stores.A regulator wont usually do what you desrcibe.Might want to try loosening the exhaust before the cats to see if you have partially plugged cat converters robbing power and causing the bucking
Sep 26, 2008 at 1:06 AM
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