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1997 Mercury Sable won't shift when cold

Tiny
PASTORCESENA
  • MEMBER
  • 1997 MERCURY SABLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 158,000 MILES
Car will take off in 1st and slip when suposed to go to 2nd like if it was in neutral and if I slow down it will engage to 1st again "when it's cold". If I warm up car for 20 min. It will operate completly normal, shift smooth, shift all gears, " while car is warmed up".
I changed trans oil & filter and still the same thing.
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Tuesday, December 22nd, 2009 AT 9:58 PM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi pastorcesena,

Thank you for the donation.

The symptoms indicates that the transmission has pressure leakages internally.

Some seals are worn and after warming up, the expansion of components/seals would reseal to provide the required pressure to run the transmission.

The slippping indicates pressure losses and the transmission has to be rebulit/replaced to rectify.
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Thursday, December 24th, 2009 AT 12:40 PM

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