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Transmission not shifting into third or fourth gears

Tiny
DON EDVALDS
  • MEMBER
  • 1998 MERCURY SABLE
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 12,400 MILES
It shifts into first and second fine with the shift handle in drive, is smooth and locks in fine, yet as speed picks up it will not hit three gear or four, overdrive. Overdrive light on all time blinking. Also I had just installed a brand new torque converter, all seals, after I finished it shifted and ran perfect as it had before it started leaking, for one week. Here are the codes: p0743, p0750, p0755, and po760. That is all of them as of 7/10/18.
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Friday, July 13th, 2018 AT 4:54 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening.

Do you have the codes set for the light? The overdrive light is an indicator of a fault. You need to have the code pulled so we can narrow the area of failure. A parts store can read these for free. Once you have them, we can continue to give you help.

Roy
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Friday, July 13th, 2018 AT 5:33 PM
Tiny
DON EDVALDS
  • MEMBER
  • 2 POSTS
Roy, I have a readout of codes. I revised page one. Thank you, Don
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Friday, July 13th, 2018 AT 5:47 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay.
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Friday, July 13th, 2018 AT 5:48 PM

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