Thread: D2a auto Trans torque converter lockup

^ this is not a good idea. The characteristics of the Td5 compared to the V8 require the correct change points and lock up points. Damage will result to the TC internals (Lock up clutch for one) during lockup etc as it is WAY smaller in every way to the V8 version. Basically, The torque pulses of a struggling Td5 in lock up at too low RPM will hurt the converter

jc

Originally Posted by Chriis Keath

Hi Gavin Have fitted one to my discovery 2.The kit comes with instruction its works, but only 3 & 4 gears for towing, all gears for braking Chris

Hi Chris, is your kit from the same supplier that Gavin purchased from ??

onebob

Yes Wholesale auto transmission

^

this is not a good idea. The characteristics of the Td5 compared to the V8
require the correct change points and lock up points. Damage will result to the
TC internals (Lock up clutch for one) during lockup etc as it is WAY smaller in
every way to the V8 version. Basically, The torque pulses of a struggling Td5 in
lock up at too low RPM will hurt the converter

jc

Justin, I was surprised to find after my "dumb" 4HP22 in the RRC that the D2 TC lockup keeps locked down to about 70Kmh under light to medium throttle anyway. You have to go over 80Kmh to set it but then it stays in down to much lower speeds.

I was also surprised and later amused by the antics on hard acceleration where the auto goes 3rd unlocked, 3rd lockup, 4th unlocked, 4th lockup.

Depending on the load 4th unlocked may be more revs than 3rd locked.

It took me a while to work out what was happening and seems a bit dumb in the programming. Surely it should go 3 locked to 4 locked but there you are.
Regards Philip A

Originally Posted by Chriis Keath

Yes Wholesale auto transmission

hmmmmmm! so strange that Gavin had troubles with installation and you didn't.......

onebob

Funny hey Phillip!
and yet kickdown goes straight to lockup,,
and quick! the time difference between a lever down change and a kick is measured in seconds--

Originally Posted by onebob

hmmmmmm! so strange that Gavin had troubles with installation and you didn't.......

onebob

Hi Bob, possibly slightly different scenario, yet to be tested.
Chris has a 2003 D2a.
I have a MY94/5 RRC softdash LSE BUT with a D2 MY99 TD5 auto transplant. Wholesale Auto's could not find the appropriate wire in the RRC underseat ex 99 D2 ECU???? when I was getting the unit insalled at their premised, and I eventually said leave it, I have to get back to Perth and will sort it out there. Its possible (albeit unlikely) there are some issues with mating various ECUs, but will know in a few days. Cheers Gavin

Originally Posted by Chriis Keath

Attachment 67319

This is how I fitted the switch had to make hole bigger to fit the switch in

Hi Chriis - private message sent

onebob