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2002 GMC Sierra Throttle kills engine

Tiny
LVPENNIMAN
  • MEMBER
  • 2002 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 112,000 MILES
My truck started missing while driving home, eventually not responding to the accelerator and finally turning off as I pulled into a parking lot. Will occasionally crank, but will only idle for about 30 seconds before dying. Any increase in throttle kills the engine. I have changed the fuel filter, plugs & wires, throttle position sensor, cleaned throttle body, changed the MAF sensor. OBD codes P0102, P0332, P0452 are what came up on my code reader.
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Friday, August 20th, 2010 AT 8:06 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
The first thing you want to check is the fuel pressure. This is a high pressure system that won't even run if the pressure drops below 55PSI.
Fuel pumps are the #1 cause of "no starts" in that vehicle.
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Friday, August 20th, 2010 AT 8:49 PM

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