Question about 1994 Ford F350 Crew Cab

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1994 F350 transmission intermittent problem

I had my mechanic replace the transmission and torque converter in my F350 7.3L Turbo Diesel with a Ford factory rebuilt transmission. The previous trans had burned up showing a flashing "OFF" light on the shifter. The rebuilt transmission drove fine for a couple of days (150 miles). On my return trip I stopped for fuel after about 60 miles and when I started out again the trans would not shift into 3rd gear or overdrive. It was like the trans went into neutral after 2nd gear. I could drive it in 2nd gear only. The "OFF" light was not flashing.

It was towed to a Ford dealer and they spent a week driving and diagnosing the truck with no problems found. So, I drove it home over a very long steep range of mountains and it ran like a champ for about 120 miles. Then, about 5 miles from home it hicupped once. At 65-70 mph it was like it went into neutral for a second and then went back into gear. Ran fine the rest of the way home.

I'm wondering if there could be a short somewhere that is making the torque converter do wierd things. Or could there be some debris in the cooling lines that is making a valve stick open?

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  • landaverde56 Dec 25, 2008

    yes my transmission shifter light goes on and off, and my jumps into gear, when it changes, it was low on fluid, but i fill it to level and it still does it. it doesn't to change gears properly.

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I had the same problem in my 96 f-350. The transmission has slipped recording a slip code in the transmission. You can pull the codes and get it. I shifts into a safe mode that increases the pressure inside your transmission as part od a fail safe. Plain and simple, you have to have the tranny rebuilt.

Posted on Feb 12, 2009

  • mrehak Feb 12, 2009

    The solution is for the on off flashing of the overdrive trans shifter.

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