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Truck reving up high.

Started off driving down highway with gas cutting out... then when we got it home it's like when you crank gas is to the floor. reved all the way up like it is stuck or something... could this be some kind of fuel sensor or relay switch.. water pump and fuel pump were both changed out approximatly 2 years ago..???

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Sparay sume lube on the accelerator line in the engine

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

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SOURCE: 1997 Chevrolet Silverado Fuel System

Hello Johnholley
I am wondering do you hear the fuel pump when you just turn the key into the on run position not crank just in run and listen and see if you hear the fuel pump run for a second, If you don't hear it you will want to check for power at the fuel tank, and have some one cycle the key while your under the truck with a test light. Hopefully you have power and you hear the fuel pump run. Now if you do hear the fuel pump running then the next thing you will want to check is for spark, It could be the ignition module or pickup coil. check out those thing and I am sure you will be able to figure out whats going on. If you don't get back to me and we can try a few other methods. I sure hope that helps you out johnholley. and thanks for using Fix Ya Bear001

Posted on Jul 20, 2008

HellPoolHall
  • 74 Answers

SOURCE: 2001 chevrolet silverodo 4.8

I would check to see if the catalytic converter/s are clogged.

Posted on Aug 07, 2008

junkman1249
  • 552 Answers

SOURCE: Idle goes nuts while warming up and now while driving....any help

check your throttle position sensor. this has nothing to do with your water pump. when the TPS goes out it does what your talking about. it revs up and down all the time. it is fairly easy to replace

Posted on Dec 08, 2008

  • 1596 Answers

SOURCE: Truck broke down wont start.

There is no Inercia Switch to reset Like Ford
Have you Double Checked All Underbody wiring for fuel pump ,OPEN In Pink/blk tracer fuel power lead,also
Oil Sending unit on most GM Vehicles have the ability to turn OFF GROUND to Fuel Pump Relay as a Proyection Against LOW OIL Pressure in engine.


Fuel Cutoff Mode
The PCM cuts OFF fuel from the fuel injectors when the following conditions are met in order to protect the powertrain from damage and improve driveability:

  • The ignition is OFF. This prevents engine run-on.
  • The ignition is ON but there is no ignition reference signal. This prevents flooding or backfiring.
  • The engine speed is too high, above red line.
  • The vehicle speed is too high, above rated tire speed.
  • During an extended, high speed, closed throttle coast down-This reduces emissions and increases engine braking.
  • During extended deceleration, in order to prevent damage to the catalytic converters

Posted on Jan 26, 2009

  • 288 Answers

SOURCE: cranks but won't start,new fuel pump,no power going to pump

look at inerata reset switch check for power at the switch

Posted on Jun 23, 2009

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