Hey guys. Been a while since I posted anything. I read through what I searched as far as the light flashing. I already replaced the sensor on the rear. Rear diff was a quart low. Topped it off and went and drove it. It's still flashing and I'm at a loss. I heard about the TSB on the wiring plug under the driver's seat. It's dirty but it's not anything crazy. It drives down the highway but will not shift into OD. If I let off the gas it drops to idle immediately. Truck has 228k on it. Speedo works fine. Tachometer jumps like its sticky once in a while. Is this transmission done in?

 

Nobody knows if your transmission is done. The way to find out is to read the codes that were stored when the light flashed. The places that read codes free CANNOT read these codes. You need either a Forscan, a good independent shop, or a Ford dealer to read them. It could be something very minor.

 

Well I pulled the codes for free. I got two. P0735 and P0732. I'd take it to someone that has that ability but if I order an ELM tool, can I use one of them to pull the codes you're referencing?

 

When my OD light comes on i just disconnect the battery cable for awhile and it goes away.

 

I know that Forscan can read the codes. I don't know what ELM is.

Excellent way to stick your head in the sand! Just ignore the problem and it will go away.

The problem with this is that minor transmission problems often lead to a failed transmission when they are ignored. But it's your transmission to ignore.

 

It is a Ford design problem. They have always made crappy transmissions. I have 220,000 miles on it and I first had to do this at around 50000 miles.

 

ELM327 adapter plugs into the OBDII port on the vehicle and enables communication between the vehicle network and another computing device via bluetooth. The other device needs to be running diagnostic software or an app such as Torque Pro or FORScan.

 

Mark is right about FORScan. The ELM scan tool & FORScan software is a Very powerful diagnostic combination for our electronic tool box, as discussed here. https://www.ford-trucks.com/forums/1...-scantool.html
It can access & query All of the available vehicle computer / controllers for trouble code clues, including Ford specific codes that standard aftermarket code readers can't & or put up our selected system live PID feeds to be monitored on our choice of viewing devices, during our trouble shoot. We have 3 choices of ELM, WiFi, Bluetooth, or UHB corded ELM's to choose from, to feed & display info to our selection of viewing device.

With the two Gereric trouble codes you posted, P0732 & P0735, you can go here & click on the trouble code you have https://www.obd-codes.com/p0732, to get an idea of some of the things that belong on the suspect list, but the ELM & FORScan might be able to narrow down the suspect list some, as FORScan can access any additional Ford specific codes in the tranny controller that a generic code reader can't access.. EDIT: Post All trouble code Numbers that the ELM / FORScan find in their scan, as those code clues can often help Focus a trouble shoot.

More thoughts for consideration, let us know how the trouble shoot goes.

 

Codes P0732 and 735 are gear ratio codes for 2nd and 5th gears. The most common reason for those two codes is a broken OD band inside the transmission, the other reason would be a failed OD servo that operates that band.

The way to know without removing the servo and looking at it is to adjust the OD band, if the band adjustment turns in more than 3 turns the band is broken, if it tightens less than 3 turns back it back out 2 turns and remove the servo for inspection.

 

Jk080,

Where is the adjustment for the band? Im not a transmission guy by any means. I'd love to learn but I'm just an engine guy. Another thing, I have Torque Pro. Will that suffice to pull the specific ford codes? Or do I need ForScan? I had Torque back when I had my 6.0

 

I've got a 2005 Ranger 4x4. I replaced the transmission range sensor as it was shifting so hard that I was afraid that I would break the shift lever and/or the cable. My OD light flashed from time to time as well, especially if I did not completely stop rolling backwards before shifting into drive (or vice versa). The OD light hasn't flashed since and that has been over a year ago.

 

Thanks for that. How is that at all related to this problem?

 

I am not sure about those types of scan apps or tools, just personally never had a need for them. The scanners we use at the shop are for the professional auto service industry and do all kinds of diagnostic things including lab scope and programming.. I do have a Autel handheld scanner that I was told does retrieve transmission codes and I have found that it does retrieve some but it also fails to list them all. LIke if I scan a vehicle with the Autel and get one code I will go back and use the big Snap on scanner and find three, so I never fully trust it and I paid almost 300 for it.

To check the adjustment of the OD band you will have to hold the inner adjustment bolt still and loosen the outer 3/4 jamb nut about a turn. Then hold the jamb nut still and turn in on the adjustment bolt, it should tighten up around two turns, if it keep turning in after three turns the band is probably broken. If it does tighten down back it off two turns and then tighten the jamb nut down while holding the adjustment bolt still.

A torque wrench is preferred but not necessary just dont over tighten the adjustment bolt, use common sense.

Here is a diagram that I found to show location and the procedure. This is located on the driver side of the transmission, the front adjustment bolt is for the OD band which is responsible for 2nd and 5th gears, the adjustment bolt towards the back is for the intermediate band that is responsible for 3rd gear.

 

Because after replacing the range sensor my OD light has not flashed.

 

His problem is no second gear and no fifth gear. Your problem was a bad sensor. Your problem is not at all like his problem.

The flashing OD light means SOMETHING is wrong with the transmission. Randomly throwing out guesses doesn't help diagnose the problem.