1995 Chevy Astro will not accelerate

Tiny
OBIE1KINOBE1
  • MEMBER
  • 1995 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 239,000 MILES
The van starts easy and runs smooth, but when you take off it will only go 45, tops, when you give it gas it stalls but does not die, it has a new fuel pump, fuel filter and I just replaced the catalytic converter and it is still doing the same thing, please help.
Friday, February 19th, 2010 AT 6:29 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
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.
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Friday, February 19th, 2010 AT 6:32 PM
Tiny
89ASTROHEADACHE
  • MEMBER
  • 2 POSTS
Have you found the problem? I have a 91 and its doing the same thing. I can give it gas and it sounds as though its smothering. If it is in park I can race it up and hold high rpm's but as soon as its in gear it smothers back. Let me know what you have found. I have replaced all sensors and throttle body and done a complete tune up including fuel filter
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Thursday, February 25th, 2010 AT 3:33 PM

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