transmission questions

6.4psd916 · Dec 16, 2011

I recently installed my dpf delete and tunes from eric. Im running the xrace with racelock. I have put 150 miles of mixed driving with a few runs to 70 at 30psi of boost. I got on it hard for the first time at about 45 psi of boost and it seemed to shift alittle funny. When I stoped the truck stuck in 4th gear and wouldn't shift out till I turned the truck off. When I re started it it was fine, do I need to let the trans learn longer? Only 80000 on the truck all stock, just looking for answers of what to do besides a built tranny Thanks

Spatel23 · Dec 16, 2011

Erics tunes dont normally need to learn to my knowledge.

Maybe do a few good wipe open pulls and see if it happens again.
Id also check trans fluid level. When was it changed or has it been?

6.4psd916 · Dec 16, 2011

Ill check the fluid tomorrow, only had the truck for 6 months, might need a change

Jeff@Spartan · Dec 17, 2011

I'm pretty sure I have read posts by Eric stating that you need to do some kind of transmission relearn. I'm guessing that a solenoid stuck and that was the issue.

bigrpowr · Dec 17, 2011

08stroker250 said:
I'm pretty sure I have read posts by Eric stating that you need to do some kind of transmission relearn. I'm guessing that a solenoid stuck and that was the issue.

eric always told me a WOT pass..the first may have a hiccup, and the 2nd would be perfect. so far he's been correct.

Jeff@Spartan · Dec 17, 2011

bigrpowr said:
eric always told me a WOT pass..the first may have a hiccup, and the 2nd would be perfect. so far he's been correct.

That'll typically do it. I usually like to let it shift through the gears 4 or 5 times before I hammer it, but the WOT pulls usually get the job done and quick.

6.4psd916 · Dec 17, 2011

So I made 2 passes, first one was rough and seem like it didn't know what to do. Second one set the wrench light on. Is racelock suppose to lock the tc in lower gears, or is there a way to set that, tc didn't lock till od

Craig@MFI · Dec 17, 2011

6.4psd916 said:
So I made 2 passes, first one was rough and seem like it didn't know what to do. Second one set the wrench light on. Is racelock suppose to lock the tc in lower gears, or is there a way to set that, tc didn't lock till od

Sounds like your Trans is on its way out

MINK · Dec 17, 2011

Craig@MPD said:
Sounds like your Trans is on its way out

I agree - I've been limping mine along for a few miles now, I've "limped" it more than once now.

6.4psd916 · Dec 17, 2011

It might be, with only 80000 on it that sucks, it alway drove fine stock, and up to 35 psi of boost, who has good deals on transmissions, it will be a few months but its good to know what I need, Thanks for your help guys

Dustball8504 · Dec 17, 2011

Craig@MPD is pretty good building them from what I've seen on here.

Jeff@Spartan · Dec 17, 2011

I would start simple before declaring the transmission on its way out. Did you check to see what code popped up when the wrench came on? I've had a wrench come on with my SunCoast driving 15 MPH and it ended up being nothing. I'm betting you have a bad solenoid.

MINK · Dec 17, 2011

6.4psd916 said:
It might be, with only 80000 on it that sucks, it alway drove fine stock, and up to 35 psi of boost, who has good deals on transmissions, it will be a few months but its good to know what I need, Thanks for your help guys

Mine has 80k miles also.

8,000 pound truck + 37s + Race tune on stock trans = Borrowed time

6.4psd916 · Dec 17, 2011

It is a job 1 truck, could the weaker tcm be causing problems, and when It goes into limp mode there are no codes, and it seems to still drive the same, I will program it to a lower tune and see what's up, recently pulling our boat through the hills the trans temp never was 160 and never over 170 pulling at 60, I think if there we're trans issues it would have showed up when pulling, im going to check the fluid, and is a full flush recommended or just dropping the pan and changing the filter and fluid in the pan