1997 Chevy Malibu Car Hesitating

1997 CHEVROLET MALIBU
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MDECLUE33
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  • 1 POST
Engine Performance problem
1997 Chevy Malibu 6 cyl 142,00 miles

My car is hesitating when I take off after coming to a stop at a stop sign or stop light, etc. What causes this? We have changed all spark plugs and wires, fuel filter and coil packs. Also what is a brake booster? Does my particular car have one? And what can that cause?
Feb 15, 2009 at 1:15 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Could be one of 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
Feb 15, 2009 at 3:57 PM
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