1997 Overdrive Off light flashing...
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1997 Overdrive Off light flashing...
Was driving to my G/F's house the other day and I noticed the truck started shifting hard and the overdrive off light was flashing. I have googled and read post after post and everyone seems to be different.
My speedo is working so that would rule out a sensor, right?
I don't have a code reader but am going to see if I can borrow one tomorrow to see if I can pull codes.
I checked the fluid tonight (cold and at idle) and it was right on the "C" on the dipstick. Fluid is a nice red and doesn't smell burnt. (Changed about 10K miles ago).
What am I missing?
Thanks guys,
Travo
PS- Going to be driving the M1009 to work until I can get this one up. I don't want to frag the transmission.
OH! And, yes this is the factory original transmission with 301,500 miles on it.
My speedo is working so that would rule out a sensor, right?
I don't have a code reader but am going to see if I can borrow one tomorrow to see if I can pull codes.
I checked the fluid tonight (cold and at idle) and it was right on the "C" on the dipstick. Fluid is a nice red and doesn't smell burnt. (Changed about 10K miles ago).
What am I missing?
Thanks guys,
Travo
PS- Going to be driving the M1009 to work until I can get this one up. I don't want to frag the transmission.
OH! And, yes this is the factory original transmission with 301,500 miles on it.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
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From: SE Florida
Wrong. It rules out the vehicle speed sensor, but no other sensor.
And the overdrive light won't flash from low fluid.
You're missing reading the codes. Without the codes all anyone can do is guess.
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Thanks Mark. I figured. I am just trying to be proactive while I am waiting for the code reader. Never used one before but I am no dummy and it should be pretty straight forward. Thank you for taking the time to post up about it. I knew when I bought the truck that the transmission would be on it's way out the door, but with no warning or slipping I figured it would of made it until at least the end of this summer. I hope that it is something simple(r) than a rebuild. I am just thankful that I have more than one truck I can drive while it is down. I will post up as soon as I can get a code.
I appreciate it!
Travo
I appreciate it!
Travo
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OK-
Just pulled my codes, so here's what it gave me:
P0470 Exhaust pressure sensor
P0236 Turbo boot sensor A circuit
P1728 Transmission motor inverter overtemp condition 2 transmission slip
I reset all codes and will drive it tomorrow to work and back (about 30 miles).
Just pulled my codes, so here's what it gave me:
P0470 Exhaust pressure sensor
P0236 Turbo boot sensor A circuit
P1728 Transmission motor inverter overtemp condition 2 transmission slip
I reset all codes and will drive it tomorrow to work and back (about 30 miles).
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
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From: SE Florida
P1728 is a transmission slip code. That means that something is slipping when the trans is in fourth gear with the torque converter locked. Most of the time it is the torque converter lockup clutch that is slipping. The only way to fix that is to replace the torque converter.
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Thank you Mark!
Sorry for the lag in commo here. My question would be how hard is the TC to replace? I have pulled transmissions (auto and manual), replaced manual trans clutch, and other things, so that doesn't scare me. How hard is the TC to remove and replace once it's dropped?
I WILL be going with a better TC than stock if I can save the bucks and do it myself. I also believe I read something about you saying to replace the valve body assy as well because of shavings thrown through there once it starts slipping? Please correct me if I'm wrong.
All in all- I want the best bang for my buck. I am not fond of turning my trucks over to people (I am very particular) and would prefer to do it myself as long as I don't require very many special tools.
Please advise,
Thank you!
Travo
Sorry for the lag in commo here. My question would be how hard is the TC to replace? I have pulled transmissions (auto and manual), replaced manual trans clutch, and other things, so that doesn't scare me. How hard is the TC to remove and replace once it's dropped?
I WILL be going with a better TC than stock if I can save the bucks and do it myself. I also believe I read something about you saying to replace the valve body assy as well because of shavings thrown through there once it starts slipping? Please correct me if I'm wrong.
All in all- I want the best bang for my buck. I am not fond of turning my trucks over to people (I am very particular) and would prefer to do it myself as long as I don't require very many special tools.
Please advise,
Thank you!
Travo
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
I don't remember ever saying that you should replace the valve body when replacing a torque converter. I don't see why that would be necessary.
Once the trans is out the torque converter just slides off the splines. Nothing holds it in place.
Installing the new one is only slightly harder. The trans needs to be stood on end with the bellhousing up. Slide the torque converter onto the shaft and start rotating. As it engages the splines it will drop down. Once the converter is below the front face of the bellhousing it is all the way down. If you install the trans before getting the converter all the way seated you will destroy the converter and the pump.
Once the trans is out the torque converter just slides off the splines. Nothing holds it in place.
Installing the new one is only slightly harder. The trans needs to be stood on end with the bellhousing up. Slide the torque converter onto the shaft and start rotating. As it engages the splines it will drop down. Once the converter is below the front face of the bellhousing it is all the way down. If you install the trans before getting the converter all the way seated you will destroy the converter and the pump.
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Hotshot
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From: evansville in
Mark,do you also recommend replacing the teflon ring on the stator shaft when doing a converter? I have been told to so, I did.Is that correct?not needed?
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Sorry Mark, I must of misread that off another site, thought it was you. Ok, so that's simple enough, no sweat there.
What DOES happen to all the metallic shavings that are pushed through the system when a TC is wearing out? Is it ALL pushed into the filter or is there something else that can implode? (LOL!)
Bottom line- I am wanting to pull this tranny once so if there is anything else I need to be doing in there while I'm at it, I would appreciate your advice. When I did my injectors, I wish I went ahead and pulled my injector cups too! I just hope I dont get a leak in one, LOL! Same principle in my mind.
Thanks so much!
What DOES happen to all the metallic shavings that are pushed through the system when a TC is wearing out? Is it ALL pushed into the filter or is there something else that can implode? (LOL!)
Bottom line- I am wanting to pull this tranny once so if there is anything else I need to be doing in there while I'm at it, I would appreciate your advice. When I did my injectors, I wish I went ahead and pulled my injector cups too! I just hope I dont get a leak in one, LOL! Same principle in my mind.
Thanks so much!
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
What metal shavings? If there are metal shavings then there is a problem. Torque converters usually don't produce metal shavings, though it can happen. The filter will catch most of those, the rest will be in the coolers or the pan.
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Mark-
Here is the post that I saw from you and I misread what you had said about metal shavings. Sorry for the mix up and again, thank you!
Travo
Transmission Slip - - Code P1728 ? - Diesel Forum - TheDieselStop.com
Here is the post that I saw from you and I misread what you had said about metal shavings. Sorry for the mix up and again, thank you!
Travo
Transmission Slip - - Code P1728 ? - Diesel Forum - TheDieselStop.com
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From: Joliet, IL
Same darn thing happened to mine last summer. Same code and everything. I definitely would recommend doing a trans rebuild while you have it out and since you dont want to have to do this in 6 months. In my opinion, Besides the the TC, I would swap in some steel planetary gears instead of the aluminum that came stock. I put Kevlar clutches in mine and the thing grabs like a baby to a tit. I also slid a bigger valve body on since I do alot of towing and shifting under load.
In hindsight however, if I could do it all over, I would swap in a ZF5. Just some things to go over before you bolt her back in. Good luck man!
In hindsight however, if I could do it all over, I would swap in a ZF5. Just some things to go over before you bolt her back in. Good luck man!