Engine light again...third time

[goldbergv95]

it seems that the orginial OS is the reason why the engine light does not turn off. I just got a reflash with the lastest modification with a new OS and now the engine codes now turn off thank god! the shifting is getting a little better.

But a new problem arises, im getting tran slippage P1870 even though i have an upgraded trans. What else should I do to fix this? THanks

[ScarabEpic22]

If you're getting P1870 you need a TCC PWM upgrade kit, once again this is a hard part issue and nothing to do with EFILive or your PCM. Google Superior transmission and look up their code 1870 lockup kit, have it in my trans. Plus the TCC tweaks Ive done, when the TC kicks in its almost another gear shift.

[goldbergv95]

If you're getting P1870 you need a TCC PWM upgrade kit, once again this is a hard part issue and nothing to do with EFILive or your PCM. Google Superior transmission and look up their code 1870 lockup kit, have it in my trans. Plus the TCC tweaks Ive done, when the TC kicks in its almost another gear shift.

this package comes with the upgraded trans from FLT.

i know the lockup kit has something to do with my high stall tc 3600 which im trying to understand the tcc apply and release part of the tune. after the upgraded OS i used wait4me's tune and it was nearly perfect just need a minor adjustment. im surprised i gain 2 mpg.

[ScarabEpic22]

Ah I didnt know if FLT included that or not. Makes sense, Ill probably have it done to my SS just because.

Have you copied the TCC lockup part of the wait4me tune to your current one and flashed that?

[goldbergv95]

Ah I didnt know if FLT included that or not. Makes sense, Ill probably have it done to my SS just because.

Have you copied the TCC lockup part of the wait4me tune to your current one and flashed that?

This is the wait4me tune that on my truck right now.

Remember when i tried to flash the wait4me tune when i couldnt because the OS was different? With the old OS, the shifting under light throttle is ok and around 40 mph I hear and felt the mmmmmmmm noise which is the process of P0757 shifting Soleniod B stuck on On occurs (probably the TC having locking or unlocking problems).

With the latest reflash from the dealer (has several modfications done mostly the trans line 1>2 increased) the low throttle shift was a little harsh BUT the process of P0757 lock or unlocking problems increase from 40 to 50 mph.

*Even turning off the P0757 and P0751 the shifting soleniod still occurs at a certain mph.

Since i have the latest OS I used the Wait4me tune, orginal and the only change was the tires since i just changed them. The p0757 increased to 60mph which was a lot better since i driving below 60 at city. I like this tune much better except i like it with 0 TM since the shifting is way better.

Just now, i changed the tm to O, abuse mode to 0, trans pressure to the old OS, Trans Output Shaft based on the efilive 1693.133820 and Vehicle speed sensor impluses per mile to 112876.000000 and now the P0757 lock/unlocking tc occurs now at 40 mph again.

I will do some more tests to figure out the Tc locking and unlocking issue causing this P0757 unless anyone could provide me some tips to help me overcome this obstical. Thanks

[goldbergv95]

well its definately a lock issue dealing with the tune. similar to this case

http://forums.trailvoy.com/showthrea...&highlight=tcc

the wait4me tune is great i just need more help it fixing it...

[goldbergv95]

FINALLY...Problem SOLVED!!!

[ScarabEpic22]

And the verdict is....

[goldbergv95]

and the answer...bum bum bum bum bum bum bum bum

The Min and Max PWM!

[sheamus]

What did you do?