Auto transmission Problem on '05 with 37k

[Rider]

I have an '05 CTD with auto transmission, 37k, 16 months old. No abuse. All maintenance performed as required. No leaks. Fluid levels good.

When all these things are true:

1) transmission is cold.

2) First gear.

3) Light throttle (less than one-fourth).

Result: it acts like it's trying to lock up the T/C, but shudders in and out, in and out, several times a second. Problem doesn't happen after things warm up, in any other gear, or under heavier throttle.

Ideas, oh wise ones?

 

[BHolm]

I think what it is doing is trying to decide between first and second as there is no lock up in first gear. This has been reported by a lot of people here. Both my '05 and my '06 did/do the same thing. As far as I know there isn't a fix, nor is it really acknowledged to be a "problem" just an annoyance

 

[DieselFiend]

Mine does the same thing. Also, on a 600 mile trip this weekend, my truck decided it didn't want to lock up the TC until almost 60 MPH. Wierd considering it usually locks at around 50

 

[Rider]

I think what it is doing is trying to decide between first and second as there is no lock up in first gear. This has been reported by a lot of people here. Both my '05 and my '06 did/do the same thing.

Thanks. At least I know I have company.

 

[jtadysak]

just a thought, im learning more and more about these engines. . what about a torque convertor lockup switch? I use one on my 12v and on my VW TDI. Works great. . Just an idea. . -Jordan

 

[BHolm]

just a thought, im learning more and more about these engines. . what about a torque convertor lockup switch? I use one on my 12v and on my VW TDI. Works great. . Just an idea. . -Jordan

Not sure that would do anything to improve this situation. It isn't a lock-up issue, it is 1-2 shift issue. Since our trannys are still old school hydraulic set ups rather than the new style with big electronic management systems I think the occasional hiccup is part of the deal. Simplicity has its price, the price is generally refinement.