Discovery 2 TD5 gutless on hills

All things considerd a screenshot of your outputs from a nanocom or similar will allow us to pinpoint th eissue, I'm sure.

Paul, I wasn't aware there were ROW (late D2 'update') vehicles delivered to SA with no EGR etc, so that is an interesting bit of info, thanks.:) I was working on some EDC Tdi Disco 1 vehicles ex Japan many years ago now and they were a minefield of research to get any info on them in this country:(. Why would anyone want a fly by wire Tdi with a full electronic 4HP22EH and an EGR system, CAT converter and Airflow meter:o:o:o

They went well, but goodness how complicated can you make a 1960's tech engine and drivetrain:mad:


JC

You mean they don't all go like this one?

[ame="http://www.youtube.com/watch?v=ftrD6cAFJY4"]DISCOVERY 2 TD5 BY OFFROAD PROJECTS - YouTube[/ame]

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Originally Posted by PhilipA

Maybe the extra 40Nm on my EU3 makes a difference but mine will accelerate at 110Kmh southbound up Moonie Moonie.

I find it holds better than my VERY modified ( for torque) 3.9 on all F3 hills.

So either it is the extra on the EU3 or there is something wrong with yours.
Regards Philip A

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I can get it up to 110kph up moonie moonie but not comfortably without the auto kicking back and forth reving up to 4000rpm in 3rd gear.
Compare to my previous D2 V8 the td5 is still better :eek:

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Originally Posted by northiam

I can get it up to 110kph up moonie moonie but not comfortably without the auto kicking back and forth reving up to 4000rpm in 3rd gear.
Compare to my previous D2 V8 the td5 is still better :eek:

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I totally agree, a chipped td5 is always a better prospect than a 4 litre v8 in a d2 IMO.

jc

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Originally Posted by PhilipA

Maybe the extra 40Nm on my EU3 makes a difference but mine will accelerate at 110Kmh southbound up Moonie Moonie.

I find it holds better than my VERY modified ( for torque) 3.9 on all F3 hills.

So either it is the extra on the EU3 or there is something wrong with yours.
Regards Philip A

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Agreed. For towing the std Td5 EU3 auto torque curve is a lot better than the 3.9l v8 despite similar max values.

Steve

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Originally Posted by OffTrack

You mean they don't all go like this one?

DISCOVERY 2 TD5 BY OFFROAD PROJECTS - YouTube

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What's with the smokescreen? can't be tuned that well. Or driven over its limits. :D [ next thing he will be complaining about head gasket issues] Bob

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Originally Posted by bunduguy

Fitted a new wastegate modulator, the old one had been by passed.

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Well, the question must be asked of you learned gentlemen out there, why would you bypass the wastegate modulator, and could that contribute in some way to the problem? [ no question too foolish, remember?] :) Bob

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Originally Posted by bob10

What's with the smokescreen? can't be tuned that well. Or driven over its limits. :D [ next thing he will be complaining about head gasket issues] Bob

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It's tuned for power and been driven hard. Most remaps will smoke under full throttle, indeed in a recent post someone mentioned it was a good way for telling if you had a remap installed.

I guess if your benchmark is a drive to local lawn bowling club whilst staying well under the speed limit it might appear it's been driven over it's limits. However the rev limit on the Td5 is a shade under 5000rpm under power and about 5500rpm on the over-run. I know those figures might be slightly shocking to the "anything over 3000rpm is abuse" brigade.

Anyway that ain't smoke, this is maximum power tuned diesel smoke:

[ame=http://www.youtube.com/watch?v=kH9kKYz0kmI]Fast diesel trucks drag racing DODGE CUMMINS 1/4 mile - YouTube[/ame]

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Originally Posted by bob10

Well, the question must be asked of you learned gentlemen out there, why would you bypass the wastegate modulator, and could that contribute in some way to the problem? [ no question too foolish, remember?] :) Bob

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It seems very popular on South African LR forums to bypass the modulator rather than fix. It just makes the D2 wastegate behaviour the same as the Defender.

The modulator controls the amount of pressure that acts on wastegate so prevents the wastegate partially opening before there is an actual need to limit boost. The idea was to increase power and improve tractability in normal driving conditions.

cheers
Paul

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Originally Posted by bob10

Well, the question must be asked of you learned gentlemen out there, why would you bypass the wastegate modulator, and could that contribute in some way to the problem? [ no question too foolish, remember?] :) Bob

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Bypassing the modulator cant do any harm and most likely was bypassed due to being faulty. Mine as been bypassed and maybe costing me some performance.
The modulator bleeds pressure from the turbo actuator to allow the ecu control a higher boost pressure.