F250 auto. OD light flashes, shifts hard but only after warm up - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 5 (permalink) Old 11-13-2015, 04:54 PM Thread Starter
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F250 auto. OD light flashes, shifts hard but only after warm up

I bought a F 250 about a week ago, it runs and shifts great until it warms up, about 15 minutes, then The OD light flashes, it shifts hard and slips a little bit.
The fluid looks slightly old and dirty but not burned.
I tried to drive it to the shop to get the codes but it was too difficult to shift. I can bring it there on a trailer next week but I was just wondering if someone else has had these symptoms and what the problem was.
Thanks
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post #2 of 5 (permalink) Old 11-13-2015, 10:13 PM
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Re: F250 auto. OD light flashes, shifts hard but only after warm up

got any more info on the truck and trans?

Jeff
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post #3 of 5 (permalink) Old 11-14-2015, 01:35 AM
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Re: F250 auto. OD light flashes, shifts hard but only after warm up

I had something similar....
Od light started flashing as soon as i got over 15mph... turns out the vss was unhooked from the tranny. Plugged it back in and no flashy od light anymore
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post #4 of 5 (permalink) Old 11-14-2015, 01:45 AM Thread Starter
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Re: F250 auto. OD light flashes, shifts hard but only after warm up

Sorry, It's a 1997 F-250 7.3 E40D
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post #5 of 5 (permalink) Old 11-14-2015, 01:28 PM
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Re: F250 auto. OD light flashes, shifts hard but only after warm up

The ONLY way to know what's wrong is to get the codes read. The places that read codes free CANNOT read these codes. You need either a good independent shop or a Ford dealer. The codes stay in the computer's memory for about a month after the last time the light flashed.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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