harsh downshift to 2nd - Page 2

beached_titan · 08-16-2006, 08:22 AM

yeah the cst kit comes with a 4" block for the rear

QShip · 08-17-2006, 11:26 AM

I recall someone explaining why the Titan does that. I recall him saying the tranny shifts based on speed not rpm.

My truck does it too and I don't like it.

StuntDriver06 · 08-17-2006, 05:54 PM

true q ship but remember, a certian speed in a given gear always = a certain speed

Yellomantis · 08-17-2006, 06:03 PM

I'm leaning more towards axle wrap now.

SOCALTITANKC4X4LE · 08-17-2006, 06:34 PM

Quote:

Originally Posted by Yellomantis

I'm leaning more towards axle wrap now.

I agree, it probably is axel wrap. I have had the PRG traction bars so long, that I forgot about axel wrap. That's how good they are.

QShip · 08-25-2006, 11:35 AM

Quote:

Originally Posted by StuntDriver06

true q ship but remember, a certian speed in a given gear always = a certain speed

Darn! Stinking details!

*zo6freak* · 08-25-2006, 02:15 PM

Well i dont have a titan but i had the same problem with my f150, I think your truck shook because of the fact you were on dirt, you have large tires that grip nicely and when you downshifted, your tires had to overcome the restraint of the transmission then the transmission had to overcome the compression of your torqey v8 thus making the rears lock up for a moment, causing the shaking, until the engine/ tranny caught up to you. (IE Engine Braking)

TriKKy · 08-25-2006, 03:01 PM

Been a problem for a while now, Tom aka HoneyKeeper spewed it all over this site.

When I was lemoning my Titan the regional rep looked at the downshift issue and had no clue what was causing it, they even tried replacing the tranny even though I didn't want them to and told them it wouldn't work since other people have had that. Basically, just avoiding downshifting there..hehe.

StuntDriver06 · 08-25-2006, 03:30 PM

something on this issue i thought about the other day...

some transmissions use a different approach to acheiving certain gears when selected manually than if selected automatically, sometimes 1st or 2nd will engage a boost valve to increase pressure to the clutches to hold the gear better, i guess it is assumed that if you manually select a low gear you might be in a bind. i had an f-150 that if you put it in drive, then while still sitting still selected manual 1, you could feel a very slight jerk. it was also more noticeable when downshifting.. just a thought, not too sure about the titan tranny...

beached_titan · 08-25-2006, 03:36 PM

Quote:

Originally Posted by zo6freak

Well i dont have a titan but i had the same problem with my f150, I think your truck shook because of the fact you were on dirt, you have large tires that grip nicely and when you downshifted, your tires had to overcome the restraint of the transmission then the transmission had to overcome the compression of your torqey v8 thus making the rears lock up for a moment, causing the shaking, until the engine/ tranny caught up to you. (IE Engine Braking)

nice theory, but i wasn't on dirt and my tires definetly wern't hopping.