torque converter - Q

[Power Hungry]

Chris,

Change one of your display PIDs to "GEAR". This will display the current gear and also indicate if the converter is locked or unlocked by a little "lock" symbol on the display. This will help you determine if the problem is downshifting or converter unlocking.

Once the problem is identified, we can modify the offending parameters to resolve the issues.

Take care.

[kokopellimotorsports]

Originally Posted by Power Hungry

Chris,

Change one of your display PIDs to "GEAR". This will display the current gear and also indicate if the converter is locked or unlocked by a little "lock" symbol on the display. This will help you determine if the problem is downshifting or converter unlocking.

Once the problem is identified, we can modify the offending parameters to resolve the issues.

Take care.

Forgot about the PID's. Oops!

[Chris74]

okay, thanks guys!

I'll do that and get back to you Bill. I hope it doesn't involve re-tuning........you just made some adjustments to my tunes

[Power Hungry]

Hey... gotta keep things interesting, right?

[Jackpine]

Chris, you might try reducing your 4-3 downshift and 4-3 TC unlock speeds. I tried this and it seemed to help that overly eager desire to downshift or unlock. But, I haven't really been where I could test it properly yet. This is the same problem Twintips was talking about too. It's almost as if Ford engineers thought we wanted to hear our engines rev. (Like you, I'd just as soon it didn't unless I REALLY wanted it).

- Jack

[Chris74]

Originally Posted by JackandJanet

It's almost as if Ford engineers thought we wanted to hear our engines rev. (Like you, I'd just as soon it didn't unless I REALLY wanted it).

- Jack

Jack - Exactly.....my thoughts right to a tee as well!

I was able to do what Bill said and have determined that is definitely my TQC coming unlocked........it's not a down shift! Engine revs higher and rpm's climb about 3-400 or so.
So now what?............do I just reduce the TQC unlock setting or increase it? How much should I start with. Like I said, I want to be able to gently pass a car without it unlocking!

[Jackpine]

Great! I BELIEVE, you reduce the TC unlock settings on 4-3, 3-2, etc. I think this inhibits unlocking until the speed is lower and the engine is under more load.

If I'm wrong, the Mad Doctor will jump right in here and set me straight! But this seems like the way it works to me.

Note: I've also decreased the TC lock speeds on upshifts.

I changed them all to the max. I really haven't been in a situation to properly test them, but my limited driving over some hills seems to feel right.

- Jack

[Dfishrmn]

Originally Posted by Power Hungry

Chris,

Change one of your display PIDs to "GEAR". This will display the current gear and also indicate if the converter is locked or unlocked by a little "lock" symbol on the display. This will help you determine if the problem is downshifting or converter unlocking.

Once the problem is identified, we can modify the offending parameters to resolve the issues.

Take care.

I have noticed on my PID the only gear I get the "lock" symbol is in 4th. None of the others show it no matter what speed or load. Is this normal?

[JWBFX4]

Originally Posted by Dfishrmn

I have noticed on my PID the only gear I get the "lock" symbol is in 4th. None of the others show it no matter what speed or load. Is this normal?

well after reading this and trying to think about mine...I can only remember seeing it in 4th but I could be wrong but I am sure someone will have the answer.

[Sburn]

Originally Posted by JWBFX4

well after reading this and trying to think about mine...I can only remember seeing it in 4th but I could be wrong but I am sure someone will have the answer.

If you take your truck out of overdrive (OD), and are running at a constant speed, you should see 3rd gear lock as well. At least that what it does on my 2007 4.6