overdrive light blink - Ford Powerstroke Diesel Forum
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  #1  
Old 10-01-2009, 08:04 PM
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overdrive light blink

i have a 95 f250 and once inawhile the dang overdrive off light will blink, when it starts that the tranny starts shifting hard in up**** and downshift stage, but if i turn the truck off and back on it wont do it again for awhile.......what is going wrong.....is there a cylinoide switch or something going bad
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Old 10-01-2009, 08:12 PM
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that light means trans slip or the torque converter isn lockin up right one of the two or both, usually means its done n you need a rebuild
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Old 10-01-2009, 10:18 PM
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Originally Posted by RJM06590 View Post
that light means trans slip or the torque converter isn lockin up right one of the two or both, usually means its done n you need a rebuild
Not the case in my situation..

Strokn'it, does it seem like its holding the RPM's way longer than it should? Had an issue a few months ago where my speedo stopped working and my abs light came on. Later that night my OD light started blinking and the truck would hold RPMs way too long and would shift super hard when it finally shifted. Ended up doing some research and the ABS sensor/speed sensor on the rear axle went bad. 21 bucks later works fine. That was on a 97 f250 PSD.
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Old 10-02-2009, 06:36 AM
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Originally Posted by charliesnyder View Post
Not the case in my situation..

Strokn'it, does it seem like its holding the RPM's way longer than it should? Had an issue a few months ago where my speedo stopped working and my abs light came on. Later that night my OD light started blinking and the truck would hold RPMs way too long and would shift super hard when it finally shifted. Ended up doing some research and the ABS sensor/speed sensor on the rear axle went bad. 21 bucks later works fine. That was on a 97 f250 PSD.
my speedo still works fine and my abs light does not come on
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Old 10-02-2009, 06:44 AM
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but yes when im leaving a redlight and not pushing the gas very hard it does seem like its holding the gear longer than it should and then BOOM feels like a shift kit
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Old 10-02-2009, 06:49 AM
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I would start with that sensor.. It is located on the top of the rear end and held in by a 14mm bolt.. Unbolt and unhook connector and look at the sensor.. Mine was covered in grime that caused it to not work. Cost like 21 bucks and fixed my problem.
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Old 10-02-2009, 06:53 AM
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ok ty for the info man i need to go get my drag link today so i will just take it out when i get up there, ty ty ty again, i really dont have the money for a new trannie
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Old 10-02-2009, 07:53 AM
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Your welcome.. I thought I blew my tranny too when it happened to me. Hope this is the problem. Let us know if its not and well figure something else out. Also have you checked your fluid in that beast yet? Not trying to disrespect your intillect, but I know in my wife old rig when the tranny fluid got low it shifted REAL hard. Another thing you could check.
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Old 10-02-2009, 08:51 AM
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yea ive checked that lol, if it was fluid level it would do it all the time, but its only happening every few days or so
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Old 10-03-2009, 05:01 AM
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i the same problem.
I thought i was the sensor. Nope the torque converter was failing. When you unplug it its jst resting the pcm. Have the code checked code be as easy as the solinod pack is bad. Get the code and we can help you out
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