Transmission Shifting

JPADILLA

MEMBER
1996 FORD BRONCO
V8
4WD
AUTOMATIC
191,750 MILES

The overdrive "Off" light will start blinking from time to time on my Bronco. It does not happen all the time, but pretty consistently. The result is that my transmission shifts hard/abruptly. I know this can't be good for my transmission. Would the problem be in my transmission itself? Could it be a sensor somewhere?

If I stop and shut off the engine and restart it will go away. Sometimes the situation will come back and other times it will stay off. Any ideas?

5 Replies

BIGJIM79

MEMBER
239 POSTS

It sounds like the valve body shift motors are sticking or the valves themselves are. This sends a error code to the trans comp. And it lets you know by flashing the OD light.

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Wednesday, November 25th, 2009 AT 7:55 PM

HOYTBROWN

MEMBER
2 POSTS

What is solution to the OD light flashing and the hard shift. Module or sensor.

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Sunday, February 17th, 2019 AT 8:59 AM

STEVE W.

MECHANIC
12,963 POSTS

HOYTBROWN, Welcome to 2CarPros. Could you please use this link and ask this as a new question. Please give any vehicle information and any testing or parts you have tried.
Thank you.
https://www.2carpros.com/questions/new

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Monday, February 18th, 2019 AT 5:07 AM

HOYTBROWN

MEMBER
2 POSTS

The od starts blinking and rpms want to race. I can stop turn off or disconnect neg cable and restart it goes away. Is it the rear end shift sensor or something else. It has blown a fuse before for instrument panel in the past.

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Friday, February 22nd, 2019 AT 8:26 AM

KEN L

MASTER CERTIFIED MECHANIC
42,884 POSTS

It sounds like a pressure solenoid has gone out but to be sure lets run the codes to see what come up. here is a guide to help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.