peacetank
Registered User
Ok so my old beater econoline van with the 7.3L IDI and the E4OD is starting to worry me. I call it a beater but I want you to realize that doesn't mean that I neglect it. It just means that I don't put any money in it other than fixing what's broke and regular preventative maintenance.
So I think I either have an electrical issue or a torque converter issue.
The transmission has always exhibited the following strange behaviors:
-When the torque converter locks up in overdrive the engine RPM's always spike first before it locks. (low line pressure maybe???)
-Sometimes the tranny randomly goes into "limp mode" (the O/D light starts flashing, the line pressure goes all the way up and it shifts hard, - it actually shifts pretty good when this happens). Then it will randomly go back to regular mode. It seems that this happens more often after extended highway driving.
-On several occasions the torque converter has not locked up at all durring a trip, but everything else is normal.
-Once I was driving and everything was fine. I put it in park then went to go again and it did not want to move. Reverse worked fine. Then it fixed itself and it has been fine for several thousand miles since.
So, you can see it has its issues, but they have never been enough for me to park it. **Also note that it has new fluid & filter with lucas additive and an aftermarket cooler and upgraded larger cooler lines**
Now today, the following issues started happening:
-As I was driving along the highway, the torque converter unlocked. Then it tried to lock back in several times, but failed. Then I noticed that it would consitantly try to lock every five seconds while I was driving down the highway. (electrical???) But it never locked back up. Then I drove it again, and the torque converter locked up for a while like normal, then started acting up again. On another drive, it was locked up in overdrive, I let off the gas, then rolled back into the throttle, and nothing. The engine just reved. - Not a good feeling. I took it out of overdrive and it engaged in gear, then put it back in overdrive and it was fine.
I have replaced both wiring harnesses, but not the range switch. What about the TPS? Or do you think the torque converter is just shot? Or is my line pressue too low?
Thanks for you help, THIS IS WHY I LIKE STANDARDS!!!!!!!!!
So I think I either have an electrical issue or a torque converter issue.
The transmission has always exhibited the following strange behaviors:
-When the torque converter locks up in overdrive the engine RPM's always spike first before it locks. (low line pressure maybe???)
-Sometimes the tranny randomly goes into "limp mode" (the O/D light starts flashing, the line pressure goes all the way up and it shifts hard, - it actually shifts pretty good when this happens). Then it will randomly go back to regular mode. It seems that this happens more often after extended highway driving.
-On several occasions the torque converter has not locked up at all durring a trip, but everything else is normal.
-Once I was driving and everything was fine. I put it in park then went to go again and it did not want to move. Reverse worked fine. Then it fixed itself and it has been fine for several thousand miles since.
So, you can see it has its issues, but they have never been enough for me to park it. **Also note that it has new fluid & filter with lucas additive and an aftermarket cooler and upgraded larger cooler lines**
Now today, the following issues started happening:
-As I was driving along the highway, the torque converter unlocked. Then it tried to lock back in several times, but failed. Then I noticed that it would consitantly try to lock every five seconds while I was driving down the highway. (electrical???) But it never locked back up. Then I drove it again, and the torque converter locked up for a while like normal, then started acting up again. On another drive, it was locked up in overdrive, I let off the gas, then rolled back into the throttle, and nothing. The engine just reved. - Not a good feeling. I took it out of overdrive and it engaged in gear, then put it back in overdrive and it was fine.
I have replaced both wiring harnesses, but not the range switch. What about the TPS? Or do you think the torque converter is just shot? Or is my line pressue too low?
Thanks for you help, THIS IS WHY I LIKE STANDARDS!!!!!!!!!