1996 GMC Safari Sputtering Engin

1996 GMC SAFARI
70,251 MILES • 6 CYL • 2WD • AUTOMATIC
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MGRANT
  • MEMBER
  • 2 POSTS
The problem that i am having is the engine sputtering. I will be driving on the freeway and the engine acts like it loses power but all gages stay in tact. It doesnt die or anything like that but it does sputter. Any advice would be appreciated.
Jan 25, 2010 at 7:45 AM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
Check and test the following below

Oxygen sensor
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)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Jan 25, 2010 at 8:11 AM