Enginerd
Registered User
Hello everyone. I finally have my 1993 F250 on the road! I'm in love with this truck. The motor reminds me of the schoolbus that I rode in elementary school. I used to love the sound of that old bus and now I realize that was probably an IDI!
So I just can't seem to get the converter to lock up. The shift points and firmness feels great and I have no other issues. I bought the truck with this tranny (so I was told, seemed clean) and the old "bad" tranny sitting in the bed and a "new" torque converter was sitting in the floorboard. I am getting code 23 after the battery has been reset and I first turn the key on. I get code 62 while driving. I have read and worked out nearly all the stuff I can to resolve this with no luck and here is what I've done:
1. TPS - I have 5 volts, a good ground (I even spliced in and have it straight to the battery right now), and I've worked the reference wire several times now. I couldn't find an agreed upon value so I tried 1.0 volts, 1.1, 1.2, and 1.4. I'm back to 1.2 because the 1.0 was too mushy and the 1.4 seemed maybe too harsh for it. The max value I have is at 3.8 something now, but that's because of that screw on the back of the throttle. I had messed with it to get to 4.2 volts but realized I don't know what it is (max throttle?) so I tried to put it back.
I feel like the problem just has to be the TPS given the code 23 setting immediately turning the key on after computer reset. But volts is volts and I've got all the proper values I thought and no dead spots from the sensor...
2. Passenger side solenoid plug - I read quite a few posts from FORDF250HDXLT and others (thank y'all sooo much) and cleaned the snot out of that connector. It actually was gross because it sat out on the ground for 6 months while this truck was up for sale. I was surely hoping this was it, but no change.
3. I may have went overboard after the transmission connector haha. While the battery was disconnected to reset the computer again I pulled all the plugs related to the torque converter from all the posts I'd read and sprayed them out and cleaned them and dried them as good as I possibly could - speed sensor on the axle, 2 firewall connectors going down to the transmission, 2 passenger side connectors next to the battery coming from the TPS and tach, the tach and TPS themselves, and some others for good measure. All had some gunk but the issue still remains after cleaning - no torque converter lockup.
4. My fluid is fresh since I just put this transmission in. It still looks clearish red when hot and is right on the middle of the crosshatch area.
5. My tach and speedometer both work with no issues. If I look hard, I can see the speedometer flutter maybe a little sometimes while going a constant speed but it seems just fine. The tach sensor on the other hand does have one of the two sides missing about half its insulation for some reason. I made sure it's not grounding to anything but right out of the sensor it is missing that insulation. I started to suspect this, especially since I couldn't get the 2,000 to 3,000 ohms across the wires that I should according to dieselhub. But my tach doesn't have a problem so I don't think it's this.
6. When I first got the truck running it was at 850. I dropped it to 600 not knowing better because I like a low idle (this clackety diesel sounds pretty mean at that rpm). But then I read the computer doesn't like it below 750 for the transmission and that the lower idle could be the problem. Nope, didn't fix it. I want that low idle back but not till I get this converter sorted out. It's at 800ish in park and 750 in gear right now.
What do you guys think? I'm at a loss and don't even know where to look anymore. I want to do the lockup mod but I can't if it's not locking up on its own from what I've read. What am I missing? I have 300 miles with no hint of a lockup so far. I'm taking it easy but my other truck's starter went out so I have to drive this to work, 70 miles a day.
By the way, I'm still new to the whole forum thing so don't hesitate to correct me or give me pointers if I'm not doing something right.
I appreciate what you all share on this forum so much.
So I just can't seem to get the converter to lock up. The shift points and firmness feels great and I have no other issues. I bought the truck with this tranny (so I was told, seemed clean) and the old "bad" tranny sitting in the bed and a "new" torque converter was sitting in the floorboard. I am getting code 23 after the battery has been reset and I first turn the key on. I get code 62 while driving. I have read and worked out nearly all the stuff I can to resolve this with no luck and here is what I've done:
1. TPS - I have 5 volts, a good ground (I even spliced in and have it straight to the battery right now), and I've worked the reference wire several times now. I couldn't find an agreed upon value so I tried 1.0 volts, 1.1, 1.2, and 1.4. I'm back to 1.2 because the 1.0 was too mushy and the 1.4 seemed maybe too harsh for it. The max value I have is at 3.8 something now, but that's because of that screw on the back of the throttle. I had messed with it to get to 4.2 volts but realized I don't know what it is (max throttle?) so I tried to put it back.
I feel like the problem just has to be the TPS given the code 23 setting immediately turning the key on after computer reset. But volts is volts and I've got all the proper values I thought and no dead spots from the sensor...
2. Passenger side solenoid plug - I read quite a few posts from FORDF250HDXLT and others (thank y'all sooo much) and cleaned the snot out of that connector. It actually was gross because it sat out on the ground for 6 months while this truck was up for sale. I was surely hoping this was it, but no change.
3. I may have went overboard after the transmission connector haha. While the battery was disconnected to reset the computer again I pulled all the plugs related to the torque converter from all the posts I'd read and sprayed them out and cleaned them and dried them as good as I possibly could - speed sensor on the axle, 2 firewall connectors going down to the transmission, 2 passenger side connectors next to the battery coming from the TPS and tach, the tach and TPS themselves, and some others for good measure. All had some gunk but the issue still remains after cleaning - no torque converter lockup.
4. My fluid is fresh since I just put this transmission in. It still looks clearish red when hot and is right on the middle of the crosshatch area.
5. My tach and speedometer both work with no issues. If I look hard, I can see the speedometer flutter maybe a little sometimes while going a constant speed but it seems just fine. The tach sensor on the other hand does have one of the two sides missing about half its insulation for some reason. I made sure it's not grounding to anything but right out of the sensor it is missing that insulation. I started to suspect this, especially since I couldn't get the 2,000 to 3,000 ohms across the wires that I should according to dieselhub. But my tach doesn't have a problem so I don't think it's this.
6. When I first got the truck running it was at 850. I dropped it to 600 not knowing better because I like a low idle (this clackety diesel sounds pretty mean at that rpm). But then I read the computer doesn't like it below 750 for the transmission and that the lower idle could be the problem. Nope, didn't fix it. I want that low idle back but not till I get this converter sorted out. It's at 800ish in park and 750 in gear right now.
What do you guys think? I'm at a loss and don't even know where to look anymore. I want to do the lockup mod but I can't if it's not locking up on its own from what I've read. What am I missing? I have 300 miles with no hint of a lockup so far. I'm taking it easy but my other truck's starter went out so I have to drive this to work, 70 miles a day.
By the way, I'm still new to the whole forum thing so don't hesitate to correct me or give me pointers if I'm not doing something right.
I appreciate what you all share on this forum so much.