Install Success

BigSur · #1 Thu, June 24th, 2010, 08:41 PM

And just to add one more note to this, I've also noticed that the truck seems to be doing this more when it's hot and I've been running it for awhile. Yesterday, it was doing it repeatedly after climbing some hills and after a 180 mile drive. I've let the truck sit overnight and just took it for a drive. Not doing it now. What is a typical transmission coolant temp after running for awhile? I was in the 170's last night driving up here.

***88Racing*** · #2 Thu, June 24th, 2010, 10:01 PM

What have been your ambient temps?>>Or what's the weather like in the area you've been driving in?

For example the last few times the garage queen has been out, its been mid 70s to lower 80s. Driving her at approximately 80 mph with varying elevation of 500ft. The tft average was 154 over a 60 mile trip.
My CHT was 208-210.

The comm gear pid is the one to view for tc lockup.
It will show what gear your tranny is using and a paddlelock as a symbol for the torque convertor lockup.

BigSur · #3 Fri, June 25th, 2010, 08:58 AM

Quote:

Originally Posted by 88Racing

What have been your ambient temps?>>Or what's the weather like in the area you've been driving in?

For example the last few times the garage queen has been out, its been mid 70s to lower 80s. Driving her at approximately 80 mph with varying elevation of 500ft. The tft average was 154 over a 60 mile trip.
My CHT was 208-210.

The comm gear pid is the one to view for tc lockup.
It will show what gear your tranny is using and a paddlelock as a symbol for the torque convertor lockup.

THanks 88!!! Ambient temps where I'm at have been in the 90's to low 100s this past week. My TFT is usually around 156 but will increase to 175+ at times. If my assumption is correct....the more I think about it....the shifting seems to be an issue when the truck is really hot ONLY. I'm realizing that its amost never repeatable when the truck has been sitting. Might take some more research.

***88Racing*** · #4 Fri, June 25th, 2010, 09:38 AM

I really don't know the overall condition or maintenance of your truck to speculate anymore.
And......
I never recorded the temps last year when I was driving in 100+ weather.

Maybe its time for a pan drop and change the filter and add some new fluid?

Some others have done a flush. But don't get the flush done with the chemical additives.

Just some thoughts.

Here's generic tables I found on fluid temps vs. break down of fluid over miles driven.

BigSur · #5 Fri, June 25th, 2010, 11:50 AM

Quote:

Originally Posted by 88Racing

I really don't know the overall condition or maintenance of your truck to speculate anymore.
And......
I never recorded the temps last year when I was driving in 100+ weather.

Maybe its time for a pan drop and change the filter and add some new fluid?

Some others have done a flush. But don't get the flush done with the chemical additives.

Just some thoughts.

Here's generic tables I found on fluid temps vs. break down of fluid over miles driven.

Thanks again. I've had other recommendations for a flush, so I think I'm getting that done regardless. Appreciate the charts man...good reference to have.

BigSur · #6 Sat, June 26th, 2010, 08:42 AM

And as a follow up, for those who are following this.....I placed the "comm gear" in the display to monitor the TC. It is only locking when in O/D...that's it. Not sure if that's good or not.

***Jackpine*** · #7 Mon, June 28th, 2010, 06:08 PM

It's fairly normal to see the lock only in O/D, BigSur (sorry I'm late getting back to you but we took the trailer off camping up on Mt Graham and there's no internet, or anything else, including potable water, where we were). There IS a beautiful mountain stream though.

If you lock out the O/D, I'm sure you'll see the TC lock up in third. When I'm pulling my trailer up the mountain, I usually put the transmission into 2nd gear, to keep it from shifting so much. The TC will lock up in 2nd too, when the loading is right.

The shifts I was talking about are the "Part Throttle 1-2, 2-3 and 3-4 upsift/downshifts". They're in the custom options menu, I think next to the TC lock/unlock choice. These only effect when shifting occurs in "normal driving", when you accelerate like average traffic in town. The WOT shifting behavior is completely separate from this.

Part throttle shifting is governed by speed and by throttle position. If you increase the throttle, up and down shifting occurs at higher speeds. With a positive adjustment, up and down shifting would occur at an even higher speed at a given throttle position.

- Jack