[jetflyr]

Bought the truck in 05 and had the transmission flushed out right away and BANG, the dreaded blinking OD light. Ford at the time said it was a slip code and cleared it. It happens again every once in a while, and though I should not, I clear it via detaching the battery. It has happened twice this month and I have decided to finally do right. I want to get it checked for the code, but no one around for at least 3 more days to do it and it is my truck I need to drive. Is there a way to pull the code myself? I have a code puller but it will not pull tranny codes. Aside from a repair facility and the tool, is there another way to do it? Just as a background; it happens when under a load accelerating up a hill in cruise generally. There does not seem to be a slip, the OD light just comes on. I have noticed at the 3rd to 4th or overdrive, (not sure about the sequence) some times it stutters slightly if you are accelerating slowly. Has good fluid. I changed it out as well as the torque converter and check it frequently. No speedometer issues. The rear light was out when I first got it and it slipped. I have heard that may be related?? Any information? Thanks, TOM

 

[jetflyr]

My neighbor helped me out with a NICE scanner. Here is what we came up with:

P1728 Transmission Slip Malfunction
P0603 Internal Control Module

Have any of you dealt with these? I am gonna do another search now that I know what the codes are. TOM

 

[Mark Kovalsky]

Your torque converter clutch is dying. The torque converter will have to be replaced to fix this.

 

[jetflyr]

Hey Mark. I have seen your name on a lot of these posts with transmissions. I have seen on some of the post where it discusses a sensor in the top of the rear diff. How the sensor affects the speedometer or the cruise control may turn off, etc... I am really hoping it is electrical. However that being said, going up hills, speed changing,etc.... it sounds like TC. Hard to do? Costly? Thanks, TOM

 

[FordmanT1]

I had a 90 model 4x4 cc diesel that did the same thing. The OD light would flash. I change the trans filter, trans flushed out still did it. Good luck

 

[Mark Kovalsky]

To change the torque converter you need to remove the trans. Then the torque converter slides off and the new one slides on, and you put the trans back in. Simple. :lol:

 

[Meatco1]

Not quite that simple Mark.

If the converter has started to come apart, the particles will be mixed into the tranny fluid, then will be circulated back to the new converter, and throughout the entire transmission.

Best to have things checked out by a trusted mech, before simply buying a converter & hoping for the best.

Good luck,
Richard

 

[jetflyr]

I have only removed one transmission and it was 25 years ago on a Mustang. If I remember correctly, it is a matter of removing the shaft, draining, disconnecting wires and possibly hyd. lines, bolts and it slides off. Any links to tech articles or someone who has done it? The TC sliding off and back on kind of miffs me since I have not seen schematics. Meatco1, if you flush the transmission and change the filter would that not get rid of the particles? If the TC fails, what will it do? Just not get out of third into overdrive? TOM

 

[Meatco1]

jetflyr:

Even flushing the fluid and changing the filter will not remove all the metal particles, if the converter has started to come apart.

Brian at BTS, and John of John Wood transmissions, both recommend a completely new ATF cooler if the trans or converter, have began to come apart.

Better safe, than sorry!

Richard

 

[jetflyr]

jetflyr:

Even flushing the fluid and changing the filter will not remove all the metal particles, if the converter has started to come apart.

Brian at BTS, and John of John Wood transmissions, both recommend a completely new ATF cooler if the trans or converter, have began to come apart.

Better safe, than sorry!

Richard

That would not be great. As far as slipping or locking. Is slipping kinda like when I had a manual and was going up a hill and the clutch was going out; if I pressed too hard on the gas it would start to rev vs. go faster? What about locking? I think I read a thread that when that occurs both speed and rpms move up at the same rate??? Also, why do some people rewire, use a chip or bypass and install a switch to manually lock or unlock the TC? I have been reading up on this but the whole concept is not sinking in. I am not starting the New Year off right, a little thick in the head.

 

[JimTJr]

That would not be great. As far as slipping or locking. Is slipping kinda like when I had a manual and was going up a hill and the clutch was going out; if I pressed too hard on the gas it would start to rev vs. go faster? What about locking? I think I read a thread that when that occurs both speed and rpms move up at the same rate??? Also, why do some people rewire, use a chip or bypass and install a switch to manually lock or unlock the TC? I have been reading up on this but the whole concept is not sinking in. I am not starting the New Year off right, a little thick in the head.

I would really bet you have more than a TC issue. If you know someone with AutoEnginuity on their laptop. You can monitor % TC lock. That would tell you if it's the TC slipping or the trans I suppose.