Quick rundown, i’ve been having issues with this truck since late last year/early this year.
Truck has just barely under 101K on it, and the *only* thing that runs good on it is the A/C and that the seats feel nice.
Issues started with engine ticking on startup, which really wasn’t much of an issue as it fully went away when it was warmed up, but then as of recently the ticking is staying (albeit very quiet) when it’s fully warmed. The tick is 3 ticks when warm all in a line, it starts off quiet, the middle tick is slightly louder and the next one is the loudest, followed by silence for around 2-5 seconds.
Truck has had oil changes (full synthetic) every 3K.
Now, as for the recent trans issues that have been getting worse pretty much by the week.
Trans fluid when hot (170°F) is at the lower notch of the *HOT* notches, but it doesn’t fill up the bottom hole totally, even though the fluid is slightly over it.
As for the issues, a few months back i had a split flat sump filter that i replaced and the truck started to act better, but not fully. The only thing this took care of was the P0868 at WOT.
These trans have issues with the clutches burning etc, but i’ve never had much or any metal on the magnets so i can imagine they’re fine, and that it’s something electrical related possibly.
I followed what i’ve seen burla say on a few forum posts, replacing the valve body and solenoid pack etc with higher build quality ones, and same issues.
The issues are that the trans shifts extremely softly normally, and sometimes it’ll shift nice and firm, on its own, with nothing being done to it.
The trans also occasionally slips the converter on the 6 to 5 upshift, which lets the RPMs go up to stall speed (2100) and then it quickly drops back down to whatever normal RPM is at the speed the truck is at. Sometimes the transmission shifts “beautifully” from 6 to 5th with no real issue, but that’s rare.
At WOT, the engine hesitates MAJORLY, sticking at lets say every 300RPM for half a second, jumping up, then the cycle continues during WOT until the 2nd gear shift, which is extremely soft (can’t feel it either.) This is without A/C on and with traction control on.
With the A/C on, the truck barely moves under its own power until around 2200 where the RPMs jump and it continues with the same cycle of jumping up as mentioned above.
During normal driving, the 1-2 shift is absolutely fine with no issues. The 2-4 shift results in shift flare and uneven engine RPM increases (which i read is the torque converter unlocking and then locking back up, according to transengineer.)
Sometimes the 2-4 shift takes around 5 seconds to complete, and sometimes during the 2-4 shift the RPMs drop, hover at lets say 1700 RPMs for a second and then drop back down to where they’re supposed to be. 4-5, 5-6 shift flare as well with uneven RPM increases aswell.
Truck has no codes, took it to a trans shop and they have absolutely 0 idea as to what it’s doing, and that according to their computer the trans is doing everything the PCM is saying to do without issue.
The truck shifts better after a night of the battery being unplugged until the next time it’s cranked over, which results in it doing whatever it wants, shifting hard at times and shifting soft at others, and the occasional perfect shift.
I feel like i should add this too, if i didn’t before, the truck hasn’t had ANY metal in the pan and very little on the magnets every time i drop it, which as of recently, has been very frequently. Before this happened it had no metal on the pans either, only thing i haven’t done with the valve body dropped is test the clutches manually via an air compressor as i don’t have one to test it with.
If no one has an answer, i’m most likely gonna keep it on the side of my house and try to save up for a new 2020 tradesmen or something slightly better equipped.
Thanks for any help.
Sent from iPhone 10S Max
