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1993 Chevy Truck very slow to accellerate

Tiny
LEWIS48
  • MEMBER
  • 1993 CHEVROLET TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 70,000 MILES
Truck takes off very slow. You cannot push hard or it will stall. It gets to 55 or more and rins smooth but will not accellerate at this point only slow speed up.
Tuesday, January 19th, 2010 AT 10:19 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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)

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
Cap and Rotor
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Thursday, January 21st, 2010 AT 4:43 AM

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