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1991 Ford F-150 transmission only engages sometimes

Tiny
HOAGIE77
  • MEMBER
  • 1991 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 174,000 MILES
I've had this truck for about 8 months, my problem is the transmission doesn't always engage. If I move the shifter back and forth sometimes it will catch, but if it does go into gear it usually slips out quickly. The fluid level is good so I was thinking dirty filter.
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Sunday, January 6th, 2008 AT 3:04 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

If the transmission has not been serviced in some time, flush the oil and change the filter, it would be a good idea to have a line pressure test done, as this will give a better indication as to the internal condition of the transmission including the valve body, as I feel that, that is where you problem is, a sticky or leaking shift valve.

Mark (mhpautos)
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Wednesday, March 24th, 2021 AT 12:01 PM

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