Thread: D1 converter lockup

It can be modded to lockup in 3rd and from memory requires valve body modifications.

Originally Posted by pop058

Is there a way of manually controlling the torque converter lockup on TDI300 autos. I tow a builders trailer (approx 1T) and (both) my Disco's seem to like to change up into 4th and lock the converter up at the same time (around 75kph). This means it drops from 3000+ revs down to under 2 and if hauling up an incline, it drops right off the power resulting in having to boot it again to kick it back down to 3rd.

If there was a way of holding in 4th without locking the converter or even have the converter lock up in 3rd, it would make it a lot more user friendly.

TIA

I would move the gear stick into 3rd.(Top gear) when it starts to labour up a hill and keep the revs above 2000rpm, it will stay there till you change up, Regards Frank.

Have a squiz at this -

ZF 4HP Lock up converter

Originally Posted by Tank

I would move the gear stick into 3rd.(Top gear) when it starts to labour up a hill and keep the revs above 2000rpm, it will stay there till you change up, Regards Frank.

Being in 3rd (without lockup) limits your road speed without ringing it's neck. 4th (top gear ) without LU seems to work quite well in my situation. The issue is keeping it there because as soon as you even look like lifting off, the TC locks and you are back to square one.

try adjusting your throttle position cable to being just a touch tighter.