2 Attachment(s)
4L60e issues,...bout to take a 50cal and give er the whole 9 yards
First off, thanks for reading this post,....I truly need some advice guys,...I've only been HPT'ing for a couple months,.. but, I've quickly learned a lot, thanks to y'all. Please see truck specs in my signature below. Believe me, if I still had my military issued 50cal,...I'd of done walked out on base and chewed this transmission slap up, and burnt the leftovers. Been going on for weeks and weeks,....truly need some help guys.
I don't know if this issue is caused by the 0411 swap, the new 4L60e,...or maybe even my base tune/OS,.... (all done at the same time I restored truck). I've attached both the tune, and my scan from this morning's drive (I also connected a line pressure gauge to the test port). First 35% of scan is me waiting for the truck to warm up - please skip that.
***Note - On HPTuners scanner, we've concluded, our PID for the 4L60e 2-3 shift solenoid is actually labelled "Shift Solenoid 3-4",..as you'll see in the attached scan***
First issue:
2nd and 4th gear solenoid operation is ass backwards (P/N, Reverse, 1st and 3rd are good though),....
- 2nd gear should be - solenoids 1-2off / 2-3on / 3-2on ----- but their assbout ----- they showed 1-2on / 2-3off / 3-2off (even the 3-2 is wrong)
- 4th gear should be - solenoids 1-2on / 2-3off / 3-2on ------their also assbout ---- they showed 1-2off / 2-3on / 3-2on (3-2 is correct on this one)
Truck shifts perfectly,...exactly per BlueCat's spreadsheet/uploaded shift tables,....all 4 shifts are dead on the MPH/TPS,...even the TCC locks right on time. I piece-mill reviewed the scan, and their all cross-haired/dead-on perfect.
Has anyone experienced this or can tell me, "hey,.. new dude, check this,..." Or,.. if I indeed have a 4L60e in my tune (as apposed to a 4L80e?). I've already checked the 0411 wiring a half dozen times,...even had my wife out there calling each wire color/pin#, per LexTech's pinout sheet (twice).
Second issue:
I connected an OTC 0-400 transmission line pressure gauge to the test port, while I recorded the scan/drive this morning.
In my driveway/brake on - read 84psi for PND321 and 115psi for reverse. I thought,...cool,...good enough pressures,....lets go for a drive.
I bet the drivers around me thought I was going slap ass crazy,....man, I was spitting chips,.....on top of the solenoids not working correctly (mentioned above),... the durn gauge needle never even moved off the original 84PSI,... even though I went up through all gears and various throttle positions (up to roughly 50% throttle). Didn't move one IODA,.... it bounced around maybe .5PSI or so,....
But,.. wait,...what about the "Force Motor (PCS) line pressure %" I was recording on my scanner??? Could it "simply" be a brand new/bad PC solenoid??? Nooooope, the % was cycling up and down, right on time with the throttle % (roughly),.... so,....where does that leave me,... (please see scan).
I think the line pressure being stuck at only 84PSI (in all forward gears) is the reason I have a shudder type noise coming from the trans when I give it the boot (a bit). Sounds kinda like the 3-4 clutch pack is chattering (maybe not enough pressure to hold them tight?) I would think the line pressure needs to increase as more throttle is laid to it,...
When I came home,...my Wife knew I quietly spitting nails and thinking how I could singlehandedly whip the entire ISIS groups ass. Man, I was so looking forward to driving my truck today,...been over a year of non-stop restoration work.
Know you know my woes,....I truly need some advise here guys,...I'm thinking the two must be linked (but, maybe not),...and I don't know if its a mechanical issue in the new trans, or a 0411 swap issue,...and or, an OS/tune segment issue (shoot, could be all three,... for all I know).
Please lend me some guidance guys,......what can I check or do??,.... at wits end with this transmission. Everything else I've done to the truck is good to go (knock on wood),.. but, this.