Appreciate the video @Tike Definitely gonna look into that.
Filled it with atf today. I was previously operating on the cold fill of ~3.5qts to get it started. Safe to operate it that way, per the service manual. But I have an appointment to have it programed tomorrow, so I filled it. No change in trans behavior.
Starting issue seems to be unrelated. The relay is clicking when the key is turned. There's a charging system issue. Seems like the battery is weak.
DTCs:
PCM-P0620 Generator control circuit
TCM-P0563 System voltage high
4x4M-B1317 Battery voltage high
ABS-B1676 Battery pack voltage out of range
When tested with the engine off the battery only read 12.2 volts. Didn't read it during jump start or with the engine running. Significant corrosion has formed on the positive terminal in just the past few weeks. Never failed to start or did any of this weird **** before I replaced the TCM a few days ago.
Hoping I can get this sorted out easily and quick. I'd imagine it would interfere with module programming. I need to check MSCAN codes. Smart Junction box is on there.
thank you for the correction!The water dripping on # 8 is indeed an issue on the v8 models.
#8 is the last one on the driver side closest to the firewall
I also don't believe Forscan is showing correctly the misfires. I know I have one somewhere but mode 6 shows 0's on all 8. Or the threshold is set up to high by Ford.
And I would check for it right after a long trip where I felt it pretty significantly.
Checking ref wires isn't something I've thought of. I'm not sure if those are sensitive to interference.does the issue occur when OD/ is off?
can you check the ref wire Voltages for things devices like the tps or TC solenoid with an oscilloscope to make sure its steady 5v reference and not getting interference? ( im throwing darts at the wall here)
also going back and re-reading your forscan graphs, i was under the impression that the TCClutch on locks up when you are in 6th gear to match the trans to engine output shaft for efficiency reasons, not during 1-5 shifts. i am totally wrong about this?
Still driving this thing like this. Having a very hard time getting motivated to crawl under it and take another ATF shower doing more diagnosis.
Not a single trans expert around here has any insight on this? I seem to be the only person on the planet with this issue.
-6 months later-I am far, far from being a transmission expert but I have had issues where misfires have made me think the transmission was going out. The effects of misfiring on my last Explorer, a V8 2002, had me absolutely convinced the transmission was gone. It turned out to be coils going bad. Thankfully I took it to an honest local transmission shop and they said this is quite common on rear wheel drive modular V8 Fords. I know this isn't the same transmission you have but the engine is similar. It seems that the transmission and engine electronic controls are so intertwined these days that one system can mess with another and send you on a wild goose chase trying to find problems that don't exist.
Edit:
One other thing I forgot to mention is that on the same Explorer there was another time I thought the transmission had died. While going down the interstate the vehicle slowed down abruptly and a god awful noise was coming from the transmission area. It sounded like the guts of the tranny was going through a metal shredder. I pulled over, had it towed to the previously mentioned transmission shop and they diagnosed it as having one or more clogged catalytic convertors. A new Y pipe with cats had it running fine. The transmission in it never gave me a minute's worth of trouble up to 116k miles at which point I sold it. I did fluid changes every 30k-40k miles so this was probably why. So these days I don't automatically assume that what ppears to be transmission problems is actually a transmission problem.