Transmission Troubles

CHEVROLET CELEBRITY
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RNATCH
  • MEMBER
  • 2 POSTS
1986 Celebrity 2 door
2.5 FI
3 speed automatic
70.000+ miles
My problem seems that the trans upshifts to soon, at low speeds. It's into 2nd by 15 - 20 mph. Then it wants to jump in and out of 2nd to 3rd and back. It also (sometimes) won't go into 3rd on the highway when it's cold. It also downshifts into 1st hard when stopping. I tried the Throttle Valve cable adjustment steps and it seems to work, but then reverted back to the same symtoms as before. The TV adjustment said to depress the D shaped button and move the cable to the stop, but didn't say to move it up or down. I pulled it up and the cable covering came out of the holder. I put it back and did the WOT and heard 1 click. I am not sure if I am doing the adjustment proper.
Thanks.
Nov 12, 2007 at 6:02 PM
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RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Recheck your adjustment see below


https://images.2carpros.com/forum/automotive_pictures/12900_throttle_valve_adjustment_1.jpg


https://images.2carpros.com/forum/automotive_pictures/12900_TV_1.jpg

Good Luck www.eautorepair.net
Nov 15, 2007 at 5:45 PM
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JOHNO34
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  • 6 POSTS
[quote:797188db6a="rnatch"]1986 Celebrity 2 door
2.5 FI
3 speed automatic
70.000+ miles
My problem seems that the trans upshifts to soon, at low speeds. It's into 2nd by 15 - 20 mph. Then it wants to jump in and out of 2nd to 3rd and back. It also (sometimes) won't go into 3rd on the highway when it's cold. It also downshifts into 1st hard when stopping. I tried the Throttle Valve cable adjustment steps and it seems to work, but then reverted back to the same symtoms as before. The TV adjustment said to depress the D shaped button and move the cable to the stop, but didn't say to move it up or down. I pulled it up and the cable covering came out of the holder. I put it back and did the WOT and heard 1 click. I am not sure if I am doing the adjustment proper.
Thanks.[/quote:797188db6a]replace cable if old then adjust the cable the wires frey internaly causing cable to stick
Dec 18, 2007 at 7:06 AM
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