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1998 Chevy Astro Intermittant harsh shifting

Tiny
MTGARNS
  • MEMBER
  • 1998 CHEVROLET ASTRO
Transmission problem
1998 Chevy Astro 6 cyl All Wheel Drive Automatic

98 Chevy Astro with 217,000 miles. Transmission operates normally and shifts smoothly until sustained speeds are driven. Then it revs higher and shifts very harshly. This continues until the engine is turned off even for a very short time, then the cycle starts over. Seems to be worse with warmer weather but I don't think it's an overheating issue because it doesn't cool down after only shutting off the engine for a few minutes. Could it be pressure build up?
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Friday, September 3rd, 2010 AT 6:00 PM

2 Replies

Tiny
WILLIAM_STELTER
  • MEMBER
  • 24 POSTS
I had pressure build up so I changed my fluid. Is your fluid bad? It should be pink if not chang it and see if that helps. Could be a slipped or warn gear also.
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Wednesday, September 22nd, 2010 AT 3:21 PM
Tiny
CRAWDADDY05
  • MEMBER
  • 3 POSTS
I have a 01 asto and while driving my spring in-line with my throttle cable was sticking open while I was driving. Its a easy check. My van would idle high even when I parked it and it would shift hard.
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Tuesday, October 12th, 2010 AT 6:43 PM

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