1991 Ford F150 transmission only engages sometimes

1991 FORD F-150
174,000 MILES • V8 • 4WD • AUTOMATIC
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HOAGIE77
  • MEMBER
  • 3 POSTS
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.
Jan 6, 2008 at 7:04 AM
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MHPAUTOS
  • ✓Experienced 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)
Mar 24, 2021 at 5:01 AM
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