1993 w/auto: After truck warms up it will not move in reverse. When truck is 1st started it will go in reverse. All forward gears work fine.

Also, since this no reverse problem started the fluid level on the dipstick is normal. Any ideas, help?

Not the original trannie, not sure when it was replaced/rebuilt.

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1993 E-150

 

Sounds like some valve body problems to me. Exactly how long does it take for it to go from working to now working? Have you tried starting it, immediately putting it in reverse and holding, and allowing it to warm to the point that it usually doesn't work? Does it work then?

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1995 F-150 Regular Cab Flareside w/ 302 V8... Mods: Mass Air, K&N FIPK, Dual Exhaust (no mufflers), Lund Premier Tonneau Cover, Motorsports 9mm Plug Wires, full JL/Kicker/Pioneer system, Autometer 5" tach, Superchip, Precision Gear 3.73s, TD Chrome Diff Cover

Best 1/8th ET: 10.5973 @ 65.6398 MPH

The F-150 Resource Guide

The F-150 Resource Guide-- a site dedicated to 1987 through 1996 F-series trucks.

 

just an idea: disconnect external shifter linkage, carefully engage trans by hand without shifter hooked up (eliminating shifter or linkage as the problem). If it still occurs, JZ is correct. Internal problem such as valve body, etc. If your not familiar with diagnosing and rebuilding transmissions, then you need a pro or a new trans if you want reverse.

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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.