Tow/Haul Mode?

Super_Dave wrote:

sgfrye wrote:

ScottG wrote:
T/H doesn't just aid in towing performance, it's better for your drivetrain, esp the trans.
I would use it anytime you tow. If there's any reduction in fuel efficiency, it's so minor it's meaningless.

X2. Tow down a mountain with TH engaged and you will learn the difference

Did this back when my boat still had surge brakes and burned them up. The hubs got so hot that it melted the grease out of the seals.

Believe that. Just some things you can't do with surge brakes

Super_Dave wrote:

For the acronym impaired, what does TC stand for?

It looks like you are just down the road from me.

TC = Torque Converter
In this context. Sorry for the confusion.

Yep. We got a good amount of snow last night :(

Sometimes TC is used for truck camper, so really depends on the context.

Super_Dave wrote:

boogie_4wheel wrote:
I have a 3rd Gen Dodge (just as the OP), I use T/H all the time, not just during towing. This is because the TC in our model trucks are so stinking loose. If I had a tighter aftermarket TC, l might not worry about it.

For the acronym impaired, what does TC stand for?

It looks like you are just down the road from me.

Torque Converter.

I pick and choose when i use it. Sometimes it downshifts to aggresively.

sgfrye wrote:

ScottG wrote:
T/H doesn't just aid in towing performance, it's better for your drivetrain, esp the trans.
I would use it anytime you tow. If there's any reduction in fuel efficiency, it's so minor it's meaningless.

X2. Tow down a mountain with TH engaged and you will learn the difference

Did this back when my boat still had surge brakes and burned them up. The hubs got so hot that it melted the grease out of the seals.

boogie_4wheel wrote:
I have a 3rd Gen Dodge (just as the OP), I use T/H all the time, not just during towing. This is because the TC in our model trucks are so stinking loose. If I had a tighter aftermarket TC, l might not worry about it.

For the acronym impaired, what does TC stand for?

It looks like you are just down the road from me.

ScottG wrote:
T/H doesn't just aid in towing performance, it's better for your drivetrain, esp the trans.
I would use it anytime you tow. If there's any reduction in fuel efficiency, it's so minor it's meaningless.

X2. Tow down a mountain with TH engaged and you will learn the difference

ScottG wrote:
The 2006 Ram has two T/H modes. IIRC, one locks out 4th and the other allows it but changes shift strategies.

Correct.

03-04 was a lockout of 4th gear.
04.5-05 was a T/H; altering the lockup timing of the torque converter clutch. It still allows use of 4th gear. A dealer flash is available to convert to the older style 4th gear lockout.
06-07 has both the T/H and the ability to lockout 4th, because of the added memory of the ECM.

I have a 3rd Gen Dodge (just as the OP), I use T/H all the time, not just during towing. This is because the TC in our model trucks are so stinking loose. If I had a tighter aftermarket TC, l might not worry about it.

By doing so, I get lockup in 3rd (as low as 35mph). If not, there is no lockup in 3rd. Also, I get lockup in 4th sooner (as low as 43mph) vs 50mph when not engaged. this makes for a much more responsive truck during slower in town driving, and will help with transmission temperatures on a hot day because of the reduced time the trans spends in fluid coupling.

Each vehicle/manufacturer has different ways their T/H operates. My work truck (05 V10 Ford) rarely gets placed in T/H (loaded with ~2k worth of equipment) because of the delayed shifts that are not necessary during normal driving. I do engage when in very hilly areas (regardless of travel speed) to reduce shifting.