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1999 Chevy Suburban check

Tiny
PROFITSON
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 120 MILES
I put a new distributor computer, cadillac convertor 02 sensor bothside 3 fuel pumps fuel fiter and it still at like its ethier losing power or not get enough gas it be spuddering and putting when I drive it for a while like 1 hour or so and I can hit the gas take and it go good for a minute than back doing the same thing im ready to give up please send me a pictue if you think its the correct part thankyou
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Monday, October 26th, 2009 AT 1:27 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the following:

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Monday, October 26th, 2009 AT 2:44 AM

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