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Problem with gear shifting, car won't go faster than 20mph

Tiny
TEECEE510
  • MEMBER
  • 1996 CHEVROLET ASTRO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 85,569 MILES
Car will not exceed the speed of 20mph. Seems like gear is not changing into the next gear.
Thursday, January 20th, 2011 AT 12:32 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If it's not slipping could be one of the following items:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.
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Sunday, March 27th, 2011 AT 5:45 AM
Tiny
CHEVYGIRL2011
  • MEMBER
  • 5 POSTS
Change transmission filter
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Thursday, May 26th, 2011 AT 1:51 PM

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