A442F Tranny Behaviour Question

[83bj60]

Hey Folks,

I've been wondering about something I've noticed shifting from third gear to drive: If I'm in third gear and the selector is in third gear, the engine runs slightly faster than if it is in third gear and the transmission is in Drive.

I'm wondering what the reason for this is. Has anyone noticed this before? Could it mean than in Drive, the third gear is locked while it is unlocked (and slips a bit) when the selector is placed in third gear?

The truck came with a massive pintle-hook type hitch, so I'm wondering if maybe the transmission wasn't upgraded at some point to a locking third gear (hey, I can dream!).

Also, I've noticed that with this transmission, once it is in overdrive, it is almost impossible to get it to kickdown to 3rd gear pressing the gas pedal all the way down, unless I release the gas pedal for a little while first, or unless I downshift manually.

Any ideas?

Chris

 

[brownbear]

Going to move to the 80 section, but leave a re-direct here too... so both see it.

 

[aim]

I always thought the torque converter does not lock when the selctor is in 3. My A440F behaves thus. My A442F in the '94 does not have a 3, using and Overdrive buttin instead. That one lock up in 3 and 4.

 

[83bj60]

I always thought the torque converter does not lock when the selctor is in 3. My A440F behaves thus. My A442F in the '94 does not have a 3, using and Overdrive buttin instead. That one lock up in 3 and 4.

Well that is news to me! So if I understand correctly:

- the '94 version of the A442F has L, 2, and D but no 3 but it has an overdrive button instead. Am I correct to assume the third gear in this transmission is directly conneceted thus locked, as well as the overdrive?

- the A440F has 3 gears plus Drive like the '91 A442F in my HDJ81, and does not lock in 3rd gear when you set it in 3rd, just like mine would seem to do.

- My interpretation of the A442F locking in 3rd when D is selected would be consistent with the behaviour of the A442F in your '94, but it automatically shifts in OD as well.

Assuming my interpretation is correct, you have to admit this is a bit confusing. The reason I asked in the Diesel forum first was that I thought the Canadians with JDM import knowledge would understanhd my question and clarify, but it would seem I'm the only one with this particular situation. Hmmm! Maybe the trnasmission was updated/overhauled/ is not the original one after all!

aim, thank you for your kind answer!

hey, fellow cannucks, I thought only JDM Land Cruisers with the extreme valve body option had this 3rd gear lock... What gives?

(thinking to self: I think I'm going to rephrase and repost the question innthe JDM alliance forum)

Chris