• Announcements

    • Mopar1973Man

      Quadzilla Tunes   06/12/2017

      QUADZILLA TUNE REPOSITORY - There is now a Quadzilla tune download area. When you submit a tune file to the download area it will automatically create a forum topic that allows discussion of your tune. So export your tune and upload it to the site. Then we all can help out in building better tunes. Check it out gang...
    • Mopar1973Man

      911 Support Group   06/22/2017

      Hey Gang, I've got the 911 support group database back up and running once again. It's listed in the 911 support category. It will allow members to list their contact information and location so other have a listed of members to call upon in the time of need. So if you wish to support other member please stop by and add your listing into the database. https://mopar1973man.com/cummins/911-support.html/contacts/

Archived

This topic is now archived and is closed to further replies.

cajflynn

P0743 p1693

7 posts in this topic

My truck will only go in limp mode. Third gear only unless I manually shift 1-2-3. No overdrive. I get two codes - 1693 and 0743. The first time it went out I took the relay out and put it back in and it worked for 15 minutes. After trying this a few times it now has a code all of time and clearing the code does nothing once the car is truned back on. I checked the wires going into the transmission and the wires on the pcm. I also checked my lock up controller and I don't see any obvious wiring problems. I put a continuity tester on every connection on my lock up controller and there was not any continuity between the wires. I am now at a loss for how to diagnose this.

Share this post


Link to post
Share on other sites

Sounds like a dead governor pressure solenoid, it is on the side of the valvebody inside the trans pan. When they go bad it goes into limp mode. I know from experience it happened on my 02 it could also be the cause of your shudder if it has been acting up.I would go to Suncoast transmission for a replacement,they have a custom one that will tolerate more pressure and are supposed to be able to operate even with contaminated oil where as the stock ones are prone to siezing and bad solenoids.

Share this post


Link to post
Share on other sites

Thank you for your reply. I think it is the solenoid too..

Share this post


Link to post
Share on other sites

If a stock one is available locally I have to go with that but if not I will order the suncoast one. I am hauling a wide load across the country this week. I won't be allowed to drive it on the weekend so I can't wait too long for parts. Thanks again for all of your help.

Share this post


Link to post
Share on other sites

I replaced all of the solenoids today. I also took the VB apart and cleaned it. No more problems. I did see a lot of fine dust like particles on the governer pressure solenoid. The particles looked black. Is this tc clutch material?

Share this post


Link to post
Share on other sites

Its common and yes it is usually clutch material, not just tc but could be from anyone of the clutch pack..

Share this post


Link to post
Share on other sites