Thread: The ultimate solution to Td5 vibration / knocking

Originally Posted by Oggie

mmm had this one since new its never changed to fourth below 80kph, last one was the same.

OK so it may have corrected a problem that existed all along and only now I'm feeling the way it was meant to be

Originally Posted by catch-22

... but it has thrown out the gear changes and it certainly doesn't change at lower revs. It only changes faster when your giving it a little more than usual. And it is very reluctant to get In to fourth. I used to be able to get In to fourth at 60kph but now it seems it likes staying in third to just on 80. ...

I would like to modify my shift points (gear changes) too. I was hoping that the PSI chip would do that, but I put it in so fast after I bought the car that I really don't remember how it shifted before the chip went in. In any case, I would still like my shift points lower, and with a lower TC stall speed too.

Right now it upshifts into 4th at 65-70kmph and will stay there down to about 60 on very light throttle. So it sounds like it shifts about like yours did before you swapped the TC out.

Originally Posted by Oggie

mmm had this one since new its never changed to fourth below 80kph, last one was the same.

Are you sure it's upshifting to 4th at this speed? The torque convertor lock-up clutch engages at just over 80km/h, and you get an obvious drop in revs when this happens.

Reno,

The up/down shifting maps are stored in the EAT and regrettably cannot be altered. The EAT can be replaced with a Compushift unit to this extent though.

Upgrading the Td5 stock TC does bring the shifting points down a bit as a result of having a lower stall speed & overall better torque transfer. Did this over a year ago, see this write-up Disco Td5 autobox: replacing torque converter

Rgds
Matt

Yes, it stands to logic that if the TC is tighter, the trans will see higher internal rotation speeds at lower engine rpm, so up shift sooner too. Unless of course the EAT is only reading engine rpm and basing its shift points on that. I was a tad surprised by Catch-22's unfortunate results.

Always has done and its actually 90kph on the speedo now as its 10kph out due to tyres

Originally Posted by RenoHuskerDu

Right now it upshifts into 4th at 65-70kmph and will stay there down to about 60 on very light throttle. So it sounds like it shifts about like yours did before you swapped the TC out.

Mine will upshift to 4th at around 52-54km/hr on light throttle .... medium to aggressive throttle is around 65.

A "tighter" TC with less slip would be a nice thing

My shift points all seem to be OK, maybe 2nd to 3rd could be at 5km/hr lower (around 37-38km/hr) but I'd prefer to have the TC lockup around 6-8km/hr lower than it does now.

Don't want to hijack this thread will start a new one I need to investigate this upshift/km a bit more