I'm sorry for the extreme length of this but, as you can see ive tried everything and i'm really at a loss. I don't want to bring it to a shop but I may have to...
96 f350, 2wd E4OD
Started out, my forward planetary crapped out..not sure why, but it did.
I rebuilt it myself with new torque converter, remand pump, remand solenoid body, and the tugger HD kit. Also has the deeper 4wd pan and filter.
Installed everything, drove it and no 3rd gear. Just got to about 2200 rpm and it wasn't happy. No 3rd, no 4th.
Dropped the pan, swapped out the solenoid pack for the old one, also checked for stuck shift valve... they ALL sprung back correctly.
Everything back together, no change.
Pulled the pan, ran an air test (admittedly i did not do this at all during rebuild) but it was hard to get into the direct clutch port, i got it as best I could and thought I heard a good thud but couldn't be 100%. Got good Thuds on everything else. Also checked again for stuck valves.
At this time i also checked continuity on all the wires on the tail housing harness, checked resistance on the shift indicator, pulled the VSS sensor, checked tps voltage... everything checked out. I cleaned all the plugs including the vss sensor. My tach and speedo have always worked fine, no weird things.
None of that made a difference.
I finally said screw it, I thought maybe i rolled a seal or something in one of the clutches.. pulled the trans, pulled the clutch drums, they all passed the bench air test. I did have a little trouble with the direct clutch. It had an awesome thud when I tested it on the bench but when i.put it on the center support, it seemed to be leaking on the shaft where the metal sealing rings were. I applied some atf, and it sounded much better until the atf flowed away and I was back to an air leak. I chalked that up to passing, and proceeded to put everything back together.
threw it back in the truck and no change. Up to this point, i hadnt had a good way to check line pressure.. I had a gauge but not a long enough hose... finally cobbled one up and did some testing. I have 200psi stall pressure In D which I'm seeing is okay, I did not to a reverse stall test yet but idle pressure was 100psi. All other pressures were Okay at idle... drive was the only one I did a Stall test on.
also unplugged the solenoid pack and still no shift to 3rd. Im still a little hazy on what is supposed to occur in limp mode, but i didnt feel like much changed. Even though i was on jack stands, it still felt like it did the 1-2 and then no 3rd..so if someone wants to chime in on that?
At this time i started digging more into my OBD app to see if i could find anything to help. Through all of this ive never ever had a trans code or any other P code. Also passes both self tests.
I monitored the shift solenoids... the are turning on and off at every shift just like the should. The computer is commanding 3rd gear but nothing is happening.
that's where Im sitting right now. The only other test I can think to do is to test the inputs at the solenoid to make sure they are even getting the command signal from the pcm. Please, if I'm an idiot for not seeing something, tell me lol. I miss my truck and I don't always have alot of time to work on it. I hate bringing things to the shop especially when I can't afford it... I have more time for testing than I do money for a shop.
I have a couple videos of when I was doing the idle pressure checks if those would help. Also, I have no changed the external cooler yet. I keep forgetting to order one. I've blown through it more than once and everything seems to go okay?
96 f350, 2wd E4OD
Started out, my forward planetary crapped out..not sure why, but it did.
I rebuilt it myself with new torque converter, remand pump, remand solenoid body, and the tugger HD kit. Also has the deeper 4wd pan and filter.
Installed everything, drove it and no 3rd gear. Just got to about 2200 rpm and it wasn't happy. No 3rd, no 4th.
Dropped the pan, swapped out the solenoid pack for the old one, also checked for stuck shift valve... they ALL sprung back correctly.
Everything back together, no change.
Pulled the pan, ran an air test (admittedly i did not do this at all during rebuild) but it was hard to get into the direct clutch port, i got it as best I could and thought I heard a good thud but couldn't be 100%. Got good Thuds on everything else. Also checked again for stuck valves.
At this time i also checked continuity on all the wires on the tail housing harness, checked resistance on the shift indicator, pulled the VSS sensor, checked tps voltage... everything checked out. I cleaned all the plugs including the vss sensor. My tach and speedo have always worked fine, no weird things.
None of that made a difference.
I finally said screw it, I thought maybe i rolled a seal or something in one of the clutches.. pulled the trans, pulled the clutch drums, they all passed the bench air test. I did have a little trouble with the direct clutch. It had an awesome thud when I tested it on the bench but when i.put it on the center support, it seemed to be leaking on the shaft where the metal sealing rings were. I applied some atf, and it sounded much better until the atf flowed away and I was back to an air leak. I chalked that up to passing, and proceeded to put everything back together.
threw it back in the truck and no change. Up to this point, i hadnt had a good way to check line pressure.. I had a gauge but not a long enough hose... finally cobbled one up and did some testing. I have 200psi stall pressure In D which I'm seeing is okay, I did not to a reverse stall test yet but idle pressure was 100psi. All other pressures were Okay at idle... drive was the only one I did a Stall test on.
also unplugged the solenoid pack and still no shift to 3rd. Im still a little hazy on what is supposed to occur in limp mode, but i didnt feel like much changed. Even though i was on jack stands, it still felt like it did the 1-2 and then no 3rd..so if someone wants to chime in on that?
At this time i started digging more into my OBD app to see if i could find anything to help. Through all of this ive never ever had a trans code or any other P code. Also passes both self tests.
I monitored the shift solenoids... the are turning on and off at every shift just like the should. The computer is commanding 3rd gear but nothing is happening.
that's where Im sitting right now. The only other test I can think to do is to test the inputs at the solenoid to make sure they are even getting the command signal from the pcm. Please, if I'm an idiot for not seeing something, tell me lol. I miss my truck and I don't always have alot of time to work on it. I hate bringing things to the shop especially when I can't afford it... I have more time for testing than I do money for a shop.
I have a couple videos of when I was doing the idle pressure checks if those would help. Also, I have no changed the external cooler yet. I keep forgetting to order one. I've blown through it more than once and everything seems to go okay?
