Question about 1999 Chevrolet Tahoe

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Sputtering and excessive gas consumption

When pressing on the gas the vehicle sputters for a second and then goes. It seems to have no power.

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  • Expert
  • 77 Answers

Start with a scan tool...it could be a number of things and this tool will give you some direction as to what to look for...you can find a cheap one for around 50 bucks

Posted on Jul 17, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

honeymokey
  • 3113 Answers

SOURCE: 95 caprice is sputtering

Check vacuum hose to map sensor.

Posted on Jun 17, 2009

  • 66 Answers

SOURCE: 1996 Chevy Cavalier - Car sputtering when gas low 1/4 tank

fuel pump is going weak

Posted on Jun 29, 2009

  • 733 Answers

SOURCE: 99 silverado sputtering & loss of power(low rpms)

Have you performed a tune up? If not, it's time for one. spark plugs, wires, distributor cap and rotor.

Posted on Oct 06, 2009

  • 24 Answers

SOURCE: Engine is sputtering, no power when push on gas.

It might be the fuel filter, if not, you might check out the catalytic converter

Posted on Oct 07, 2009

jturcotte
  • 7696 Answers

SOURCE: overreving with no power and

usually caused by busted diaphram in fuel pressure regulator allowing fuel to be drawn thru regulator directly to intake manifold. Pull vacuum line off regulator, plug line with golf tee, start car and watch to see if gas comes out of regulator. If yes, turn off car, replace regulator. The regulator sits near the fuel rail on the top of the engine as shown below. I will paste replacement instructions below from autozone.com in case you need to replace the regulator. Please let me know if you have any questions.
jturcotte_421.gif


Removal & Installation

4.2L Engine

  1. Relieve the fuel system pressure.
  2. Remove the air cleaner outlet resonator.
  3. Disconnect the engine wiring harness from the retaining clips at the front of the engine.
  4. Disconnect the fuel pressure regulator vacuum line.
  5. Clean any dirt from the fuel pressure regulator and the surrounding area.
  6. Disconnect the fuel return pipe.
  7. Remove the fuel return pipe retainer.
  8. Remove the fuel pressure regulator retainer.
  9. Remove the fuel pressure regulator.
  10. Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.

To install:
  1. Install the regulator filter.
  2. Install the new O-ring on the fuel pressure regulator.
  3. Lubricate the fuel pressure regulator O-ring with clean engine oil.
  4. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  5. Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
  6. Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
  7. Connect the fuel return pipe.
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable.
  10. Inspect for leaks:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.

  11. Install the engine wiring harness into the retaining clips at the front of the engine.
  12. Install the air intake resonator.

Posted on Dec 08, 2010

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