Transmission failure - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 10-05-2008, 08:41 AM Thread Starter
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Transmission failure

I have a '00 F-250, 7.3L, 108,000 miles. Reverse went out, so had to have a remanufacture put in. "First" replacement tranny shifted really hard, also OD light started flashing after about two minutes of driving. So another was ordered and put in. This one shifts much better, but the OD light still flashes. Mechanic replaced a speed sensor of some sort on the transmission, but no joy. Light still flashes after two minutes.

Took truck to Ford dealer, they "flashed" the computer. Nothing was mentioned about fault codes. OD light still flashes.

So here I am stuck in a motel in Ft. Collins, Colorado for the past week. Any idea about the OD light?
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post #2 of 5 Old 10-05-2008, 08:55 AM
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If your O/D light is flashing I bet that there is a code being stored in there. When my tranny gave out on me (at 99,000 miles), all that happened was the O/D light started flashing. I only lost overdrive when the transmission failed, and I cleared the codes multiple times and was receiving different codes each time. The "Input turbine speed sensor circuit no signal" code was recieved multiple times however. Either way, the tranny was toast, full of metal shavings and had to be replaced. It never did get hot or burn the fluid.

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post #3 of 5 Old 10-06-2008, 11:30 AM
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When the OD light flashes a code is stored in the computer's memory. It stays there even if the light stops flashing. The only way to know where to start is to have the codes read. The places that read codes free can't read Ford trans codes.

Mark
Former Ford Automatic Transmission Engineer 1988-2007
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post #4 of 5 Old 10-06-2008, 11:37 AM
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Quote:
Originally Posted by Mark_K View Post
When the OD light flashes a code is stored in the computer's memory. It stays there even if the light stops flashing. The only way to know where to start is to have the codes read. The places that read codes free can't read Ford trans codes.
Listen to this guy he was a Ford tranny engineer. If anyone would know he would.
If the lights blinking there are codes in the tranny.

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post #5 of 5 Old 10-06-2008, 04:50 PM
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when the trans went on my 00 f 350 it lost overdrive about 15k miles or something before it lost reverse, and then eventually it lost all the forward gears the same day reverse went out. it went out at about 109k also.
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