Speedo Stop working/Tranny shift goofy
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New User
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From: West Canada AB/BC
Speedo Stop working/Tranny shift goofy
Good day
My 99 F-250 4x4 was shifting funny and then I notice the speedo not working..Worked one minute then not the next..First time problem ?
I've search and tried some of the ideas..
I've cleaned the rear VSS sensor (Just replace 18 months ago)
Checked the wiring to it..seems good
Checked the wiring to the tranny speed sensor..seems good too..
Should I replace the tranny sensor.And if I do what's involved in this ....Unbolt, pull out ,stick new one in, bolt in.. One unit.
Can I clean or check the tranny one ??
Or any other suggestions ....
Thanks Cory
My 99 F-250 4x4 was shifting funny and then I notice the speedo not working..Worked one minute then not the next..First time problem ?
I've search and tried some of the ideas..
I've cleaned the rear VSS sensor (Just replace 18 months ago)
Checked the wiring to it..seems good
Checked the wiring to the tranny speed sensor..seems good too..
Should I replace the tranny sensor.And if I do what's involved in this ....Unbolt, pull out ,stick new one in, bolt in.. One unit.
Can I clean or check the tranny one ??
Or any other suggestions ....
Thanks Cory
Senior User
Joined: Nov 2005
Posts: 125
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You check the fuses in the fuse box for a blown fuse? I had a fuse tap in mine and I pulled it and forgot to replace the fuse and the speedo didn't work. The transmission was shifting hard as well. I put the fuse in and it fixed the problem. Not sure what fuse it was. Just a thought.
Craig
Craig
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New User
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From: West Canada AB/BC
Thanks Craig
I just did it and found no blown fuses inside or in the engine bay..
Just a thought , I'm not 100% sure the sensor I checked on the tranny was the right sensor...
Can anyone tell me where to look and what it looks like ?
Thanks Cory
I just did it and found no blown fuses inside or in the engine bay..
Just a thought , I'm not 100% sure the sensor I checked on the tranny was the right sensor...
Can anyone tell me where to look and what it looks like ?
Thanks Cory
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New User
Joined: Sep 2003
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From: West Canada AB/BC
I replaced the vss sensor on the rear diff about 18 months ago do you think it's gone bad ?
I checked the fuses by pulling them and they look good BUT will go and recheck with multi meter...
What about the speed sensor on the tranny ?
Thanks Cory
I checked the fuses by pulling them and they look good BUT will go and recheck with multi meter...
What about the speed sensor on the tranny ?
Thanks Cory
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Did it trip the od off light on the shifter also? Im geussing on that speed sensor in the top of the rear diff. Common prob! You may want to have a shop check for any codes it has thrown.
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Thread Starter
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New User
Joined: Sep 2003
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From: West Canada AB/BC
Nope the od light never went off..ANd still not going off
Diff oil was change 6 months ago..
I checked the VSS rear diff sensor and clean it off not much on it at all other than oil.....
? how would dirty oil cause a sensor to go bad ?
Bad reading maybe ? But I've cleaned it off
Thanks Cory
Diff oil was change 6 months ago..
I checked the VSS rear diff sensor and clean it off not much on it at all other than oil.....
? how would dirty oil cause a sensor to go bad ?
Bad reading maybe ? But I've cleaned it off
Thanks Cory
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Joined: Nov 2004
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From: north west new jersey
i think more then likely the rear senser or the one on the rear of the trans went bad,only other thing could be the wheel on the diff carrier by the ring gear is loose or moved away for the correct spot.
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New User
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From: West Canada AB/BC
If you PRAY overnight it will fix itself......
Tranny fairy came by last night and fixed it......What a nice Fairy
Next time I hope he leaves an invoice so I know what the problem was ?
The only thing I did last night was go under the truck and move the wires around the tranny to find the speed sensor on the top of the tranny ?
Well it's working again so I don't really know what to say other then.. Thank you to everyone that help out ..
Cory
Tranny fairy came by last night and fixed it......What a nice Fairy
Next time I hope he leaves an invoice so I know what the problem was ?
The only thing I did last night was go under the truck and move the wires around the tranny to find the speed sensor on the top of the tranny ?
Well it's working again so I don't really know what to say other then.. Thank you to everyone that help out ..
Cory
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New User
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From: West Canada AB/BC
I unplugged the rear diff senser to test to see if the problem was the same...And it was...NO speedo and the tranny shifted poorly.
So I have bad rear diff sensor or the wire somewhere is loose..
Hoping for a bad sensor !
Cory
So I have bad rear diff sensor or the wire somewhere is loose..
Hoping for a bad sensor !
Cory
