OD OFF Light
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Tuned
Joined: Mar 2006
Posts: 466
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From: PNW
OD OFF Light
My OD OFF light started flashing today and I know (or atleast im pretty sure) that it is the Transmission speed sensor, could any of you guys point me in the right direction to find the sensor and how much one would cost?
Senior User
Joined: Dec 2007
Posts: 145
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From: Dickson, Tennessee
Could be more than the sensor......the trans has passed a code......could be (pressure,converter or many other things) flashing light means the trans has gone into limp mode.........speed sensor is on top of the rear axle it reads off of the tone ring on the carrier, I fought mine and found out that the @@$#&!*#* that rebuilt the trans broke a connector and it was not getting good connection. fixed connector disconnected batt. cleared codes all is good. Hope this helps.
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Tuned
Joined: Mar 2006
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From: PNW
thanks, i disconnected the battery so it would clear i could drive the truck for tonight, This happened to me once before and it went away after a while. Is the sensor hard to get to? I forgot to mention in the original post that it is slamming into second alot and the other gears just a bit.
Senior User
Joined: Dec 2007
Posts: 145
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From: Dickson, Tennessee
when the trans goes into limp mode all the pressures are bumped up to max in an effort to save it's self that is why it hammers gears the sensor is very easy to get to it is on top of the rear axle in the middle wires going to it with one bolt holding it down (10mm socket ??)
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Tuned
Joined: Mar 2006
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From: PNW
Originally Posted by TN97STROKE
when the trans goes into limp mode all the pressures are bumped up to max in an effort to save it's self that is why it hammers gears the sensor is very easy to get to it is on top of the rear axle in the middle wires going to it with one bolt holding it down (10mm socket ??)
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
Originally Posted by IceboxFX
i wanted to start with the sensor cause that is the cheapest and easiest thing to diagnose.
There's a speed sensor on the rear axle. It's easy to change, so you might as well change that one. When that doesn't fix the problem, come back here and we'll find something else to waste your money on.
Or you could have the codes read and then we'd KNOW what's wrong and we could actually DIAGNOSE what's wrong.
Your call.
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Tuned
Joined: Mar 2006
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From: PNW
Originally Posted by Mark Kovalsky
You're not diagnosing anything, you're guessing.
There's a speed sensor on the rear axle. It's easy to change, so you might as well change that one. When that doesn't fix the problem, come back here and we'll find something else to waste your money on.
Or you could have the codes read and then we'd KNOW what's wrong and we could actually DIAGNOSE what's wrong.
Your call.
There's a speed sensor on the rear axle. It's easy to change, so you might as well change that one. When that doesn't fix the problem, come back here and we'll find something else to waste your money on.
Or you could have the codes read and then we'd KNOW what's wrong and we could actually DIAGNOSE what's wrong.
Your call.
I'm not gonna replace the abs sensor since I know that has nothing to do with my problem but thanks for trying to steer me in the wrong direction.
My scaner does not read transmission codes and I planned on starting with the sensor because that would be the easiest thing to check. I'm going to pull it and clean it tomorrow and see if I might have an issue like TN97STROKE did. But what do I know, I didnt engineer Ford transmissions for 19 years.
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Senior User
Joined: Dec 2007
Posts: 145
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From: Dickson, Tennessee
Check all the connections on the trans......the wiring splits at the trans one goes to the nuteral switch on the side of the trans one is the 4x4 indicator in the transfer case and the other goes over the top of the trans to the control pack in thr trans on the pass side thid wire has a connection on top of the trans also. clean all connections and fill with dilectic grease.
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
Originally Posted by IceboxFX
Well up untill now I thought everyone on here was nice and helpful
I'm not gonna replace the abs sensor since I know that has nothing to do with my problem but thanks for trying to steer me in the wrong direction.
My scaner does not read transmission codes and I planned on starting with the sensor because that would be the easiest thing to check. I'm going to pull it and clean it tomorrow and see if I might have an issue like TN97STROKE did. But what do I know, I didnt engineer Ford transmissions for 19 years.
I'm not gonna replace the abs sensor since I know that has nothing to do with my problem but thanks for trying to steer me in the wrong direction.
My scaner does not read transmission codes and I planned on starting with the sensor because that would be the easiest thing to check. I'm going to pull it and clean it tomorrow and see if I might have an issue like TN97STROKE did. But what do I know, I didnt engineer Ford transmissions for 19 years.
Usually there is an event leading up to the flashing od light(not always)
when mine did exactly what you are describing..out of the blue...I had a bad spot in the wires leading to the VSS... made contact most of the time,,,Hit a bump ,,& there was a problem ...Start with the inexpensive stuff first..Check & clean the connection,Replace the sensor , look for shavings on it ,,check the mounting surface for rust build up..& check the wires for bad spots
Ford forgot to tell the engineers what may happen, a few years down the road..Getting the codes read will help ...There will be one stored ....
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
Originally Posted by IceboxFX
Well up untill now I thought everyone on here was nice and helpful
Originally Posted by IceboxFX
I'm not gonna replace the abs sensor since I know that has nothing to do with my problem but thanks for trying to steer me in the wrong direction.
If you were not going to replace the ABS sensor, also known as the vehicle speed sensor, what sensor were you going to replace?
If you read the whole post you will see that I was not misleading you.
Originally Posted by IceboxFX
But what do I know, I didnt engineer Ford transmissions for 19 years.
I'm sorry you took offense to my post. I'll try to be nicer in the future.
Postmaster
Joined: Jun 2007
Posts: 2,795
Likes: 1
From: Rogue River, OR
Use the dilectric grease sparringly as it in it's self is not a conductor of electricy. It is designed to keep out moisture and prevent corrosion. If it should get hot and run (not likely) to another connection or ground it will not conduct electricity to that point.
"Kopr-shield" is a conductor of electricity and is good to use on bullet connectors connectors as it protects the joints from exposure to moisture, dirt, acid etc.
Rog
"Kopr-shield" is a conductor of electricity and is good to use on bullet connectors connectors as it protects the joints from exposure to moisture, dirt, acid etc.
Rog
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
Because Ford wrote the software in the PCM to require a Ford specific scan tool to read trans codes. Not all code readers can do it. The EPA requires that all OBDII scan tools be able to read codes the turn on the check engine light, but there is no requirements for codes that flash the OD light.