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O/D light on stick blinking???????

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Old Apr 26, 2007 | 06:51 PM
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O/D light on stick blinking???????

Does anyone know why my o/d light on the auto stick flashing? I do not have any trans. problems. Maybe a service light? 1995 f350 7.3L Powerstroke.
 
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Old Apr 26, 2007 | 07:53 PM
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There's a sensor on the differential that could be bad. It's a low cost item to try. That was the problem with mine but don't ask me part nrs, etc as my son diagnosed and fixed it.
 
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Old Apr 26, 2007 | 08:08 PM
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May I ask if you had the same problem or just a shifting problem. I don't seem to have any trans shifting problems...yet.
 
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Old Apr 26, 2007 | 08:23 PM
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Just a blinking light -- no shifting problems.-
 
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Old Apr 26, 2007 | 08:30 PM
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Thanks. I'll check it out. I replaced that sensor 2 years ago but for a different reason. Maybe it's gone bad again.
 
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Old Apr 26, 2007 | 08:37 PM
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Is it a regular blink or is it sporadic? If it's a regular blink, then I'd say it's a trouble code.
 
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Old Apr 26, 2007 | 08:42 PM
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Steady, and the o/d is working properly. One thing I just noticed is that when I put the truck in reverse the idle drops low and feels like it is going to stall.
 
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Old Apr 26, 2007 | 09:25 PM
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This should help -https://www.ford-trucks.com/forums/606127-od-light-blinking-and-abs-light-on.html.
 
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Old Apr 26, 2007 | 09:36 PM
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Thanks for the tip. That picture sure helped too. I did replace that exact sensor before. I'll grab a new one a give it a try before I hassle with a tranny place. Thanks.
 
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Old Apr 26, 2007 | 10:01 PM
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take the shifter lever while in park when light is blinking just slightly move lever up in to park a little hard & down to the stop all of this while still in park. Do it very slowly to see if light quits flashing if it does you have a transmition range sensor going bad.
 
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Old Apr 26, 2007 | 10:11 PM
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Please clarify how to move the lever again. Move the lever up into park while in park?
 
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Old Apr 26, 2007 | 10:13 PM
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In my previous 99 with an auto, my lever light was blinking after I had tried to get my truck unstuck (With my 29' Travel Trailer in tow) and got the tranny too hot. Once it cooled, the light stopped flashing and never came on again.
 
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Old Apr 27, 2007 | 05:59 AM
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yes you will have a little play in shifter while in park just move shifter up a little firmer & hold it there to see if light quits flashing then pull it down a little but not out of park & hold it to see if light quits flashing.By doing this you are checking to see if there is a bad spot in trans. range sensor.
 
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Old Apr 27, 2007 | 10:39 AM
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Thanks. I tried this and nothing changed, also changed sensor on rear differential and no change. Guess I'll have no choice but to have a code check done. Thanks for the effort.
 
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Old Apr 27, 2007 | 06:35 PM
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If you put the truck in dr. or rev. what does the light do?
 
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