1988 Lincoln Town Car 1988 Town Car won't going into overdr

Tiny
ALTON001
  • MEMBER
  • 1988 LINCOLN TOWN CAR
1988 Lincoln Town Car

car will kickdown at about 42 miles an hour like it going to shift, then gets stuck and will not up shift. When I put it in the drive position it shifts fine through all 3 speeds, but when placed in overdrive, car does not change like it should. I rebuild the valve body with a shift kit to try and correct the problem but all it did was move the problem up to about 47 miles per hour. Fluid and filter have been change twice the last one hundred miles. Is it the O/D servo that's sticking, are do I just need to buy another tranny. This is the 3rd tranny I have place in this car in the last 3 years.
Monday, August 10th, 2009 AT 6:43 AM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
There are several other things that can cause a no 3-4 shift but good 1-2-3 shift. Unfortunatly they require disassembly of trans to repair. Also sticking 4-3 back-out valve.


https://www.2carpros.com/forum/automotive_pictures/198357_Graphic_37.jpg


Hope this helps
Thnaks for donate
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Monday, August 10th, 2009 AT 1:13 PM

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