1991 Ford F-250 shifting

Tiny
B_UNIT
  • MEMBER
  • 1991 FORD F-250
  • V8
  • 4WD
  • AUTOMATIC
  • 158,000 MILES
My pickup does not want to shift from first gear to second on its own.I have to get my rpm up to desired range and then let off the throttle some in order for it to shift to second. From second gear on it shifts fine.
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Friday, January 30th, 2009 AT 7:12 PM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Hi b_unit,

Thank you for the donation.

I am trying to do some research on the problem and would need some additional information and hope you are able to provide them.

1. Tranmission code. 3 different models of transmission are installed and I need to know which one.
2. Engine capacity. This might help determine the transmission type.

Thank you.
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Saturday, January 31st, 2009 AT 2:00 PM
Tiny
B_UNIT
  • MEMBER
All I got is my trans is a type E and my engine is a 460.I hope that helps,
Thank you, Brandon
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Sunday, February 1st, 2009 AT 4:08 PM
Tiny
KHLOW2008
  • EXPERT
Hi Brandon,

Yes, the info is sufficient.

Possible causes for the symptoms described are :

Sticky or dirty valve body.
Improperly adjusted manual linkage.
Damaged 1-2 shift valve.
Sticky D2 valve.
Improper fluid level.
Sticky intermediate clutch accumulator regulator valve.
Sticky 1-2 manual transition.

If the manual linkages are correct, you would need to service/replace the valve body and check the intermediate clutch accumulator regulator valve.


http://www.2carpros.com/forum/automotive_pictures/192750_AutoValveBody91F250_1.jpg




http://www.2carpros.com/forum/automotive_pictures/192750_AutoValveBody91F250a_1.jpg

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Monday, February 2nd, 2009 AT 9:18 AM

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