Fuel problems

Tiny
GANTTILA
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 97,000 MILES
2000 Chevy silverado 2500, hesitates when throttled up driving for a brief time, then runs good as long as it is running.
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Wednesday, December 8th, 2010 AT 12:07 AM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Could be one of the following below:

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
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Wednesday, December 8th, 2010 AT 12:13 AM
Tiny
GANTTILA
  • MEMBER
Hi rasmataz, Thank you for your reply. For about 6 months when started and left idle for a while, when I got in pickup, the gas gage always went to empty and the computer said low fuel. My mechanic checked the fuel pressure regulator, and said it wasn't leaking. Also, before I go any further, every time I got in it and started it up(which started fine all the time), and started driving right away, it bogged down when I gave it gas, for about a minute or so, and then ran good after that, until I shut it off and started again. Today we put a new fuel pump in it. Which was a lot of work to take the gas tank off. Now the gage works fine, with no computer coming on, but the bogging down is still there. What could it be for sure. It has new plugs, a cleaned mass airflow sensor, and after bogging down for a minute or two, runs very good. I hope this helps narrow it down. Thank you so much for your help. Let me know. Gary
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Wednesday, December 8th, 2010 AT 4:26 AM
Tiny
RASMATAZ
  • MEMBER
Check and test the throttle position sensor closed and wide open throttle voltages
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Wednesday, December 8th, 2010 AT 5:12 AM
Tiny
GANTTILA
  • MEMBER
I will do that. Anything else that might work. Thank you, Gary
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Wednesday, December 8th, 2010 AT 2:52 PM

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