1994 Chevrolet Astro transmission problem

1994 CHEVROLET ASTRO
210,000 MILES
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TEDITKIM
  • MEMBER
  • 2 POSTS
transmission will not shift to 2nd or 3rd stage. when the problem acts up, i noticed that speedometer
does not work properly. however, when the engine is cool like when i start my car first time in the morning, the transmission works fine for 15-20 minutes, and then starts to show problem.
Jul 5, 2013 at 3:48 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Suspect faulty Vehicle Speed Sensor located on tailshaft trans
Jul 5, 2013 at 4:02 AM
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TEDITKIM
  • MEMBER
  • 2 POSTS
Thanks for the advice.
I got a new speed sensor from a Chevy delaer and replaced the old one.
However, the problem is still there.
Somebody suggests to replace ignition switch to secure good contacts on voltage line going to solenoid and speedosensor from ignition swtich. What do you think?
I will appreciate your input.
Jul 5, 2013 at 9:47 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
A scan of computer may shead some light
Jul 9, 2013 at 12:11 AM
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