D4 Rollover

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Originally Posted by Disco4Dave

Torque Converter maybe

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that make sense.

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Originally Posted by ozscott

Yep I wondered if locked but assumed that torque converter would have had sufficient slip. Cheers

Cheers

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No slip, if the TorqueC is locked [emoji41]

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Originally Posted by PerthDisco

Gunning it up a sand dune you’ll never make the top of is a guaranteed stall condition also it seems.

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Definitely not!! I've never seen a D4 climb a sand dune with no wheel slip. We are talking about the wheels coming to a sudden stop due to high traction on rocks etc when the TC is locked in low range and the driver removes all power by lifting off the accelerator pedal and hitting the brakes. That is not what happens on a sand dune. I assume there is insufficient time for the TC to unlock in those situations before the engine stalls.

I have played on heaps of sand dunes in my D4 where we couldn't reach the top and never once had a stall in any conditions. Since the wheels are spinning when you lift off there is more time for the TC to unlock if it is locked and do what it is designed to do and let the engine run without stalling.

Mines a D3 and I’ve noticed when you run out of momentum on the dune it often stalls (in Sand Mode) just as you give up.

Odd. I’ve never once had mine stall on me. Maybe I just don’t try hard enoigh

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Originally Posted by DiscoJeffster

Odd. I’ve never once had mine stall on me. Maybe I just don’t try hard enoigh

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Mine never has either,but with DSC on,it misbehaves,but still doesn't stall...

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Originally Posted by scarry

One thing i do know is mine has stalled,and it was on a steep rocky hill in rock crawl.

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Originally Posted by scarry

Mine never has either,but with DSC on,it misbehaves,but still doesn't stall...

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I'm confused Paul. Do you mean never stalled on sand dune perhaps?

Scott

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Originally Posted by PerthDisco

Mines a D3 and I’ve noticed when you run out of momentum on the dune it often stalls (in Sand Mode) just as you give up.

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That must be a different problem, not related to the TC lockup. Sounds like a fuel issue of some sort I reckon, unless the D3 is naturally more prone to stalling than the D4. My D4 puts out a lot of black smoke in the situation you describe so obviously over fueling when it runs out of puff. Perhaps that's enough to stall it on some cars.

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Originally Posted by LRD414

I'm confused Paul. Do you mean never stalled on sand dune perhaps?

Scott

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Correct,never stalled on a sand dune.

It has lost forward momentum on a few occasions,but didn't stall.

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Originally Posted by BobD

My D4 puts out a lot of black smoke in the situation you describe

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That too!