DonDownUnder's D3 dropping into Limp Mode

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Originally Posted by DiscoJono

Not yet. Cleaned it. Anyone used a multimeter on these? I'll have a look through Don's receipts but I think it may have been swapped out already.

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If it's the one that came with the replacement engine then it's unlikely to be the cause.

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Originally Posted by Grentarc

LR021042 is the turbo part number, and about $1150 + freight for genuine Borg-Warner unit.

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Same again to fit????
Andrew

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Originally Posted by garrycol

Oh - I may have misread some earlier posts as I thought that the issue only popped up when towing (like mine).

So if you got limp mode without towing something then yes there is something else going on.

My point about replacing stuff remains valid and thanks for not taking it critically as was not intended - on this forum you will see dealers in particular just replacing things until they have fixed the issue only to have the problem return and ultimately solved with input form AULRO members.

On this last incident - have you had time to get the codes read?

Also the cost of a new MAP sensor is not a lot so as Graeme has suggested it might be worth replacing.

Also and I am going into an area I know nothing about - you have a suspicion about the turbo but in themselves they are pretty reliable however the actuator sticks - thinking out aloud is the actuator sticking and not allowing the vanes to go to the right position so causing the problem.

Maybe someone who knows could tell up if this is feasible and if the actuator can be serviced in place.

Irrespective I would replace the MAP sensor.

Good luck

PS - no checking of the turbo as yet.

Garry

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My thoughts exactly about the actuator. I reckon it's a possibility she's either sticking or worn out. My other rig has a 600hp Cummins Signature in it but it's just before they switched to variable vain turbo's. I've heard that they're having turbos die after 200,000klms where the traditional turbos should last a million k's. id like to check the intercooler for leaks too before I go through a turbo swap.

Cheers mate

The actuators are known to fail and linkages become stiff but usually fault codes are stored.

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Originally Posted by DiscoJono

My thoughts exactly about the actuator. I reckon it's a possibility she's either sticking or worn out. My other rig has a 600hp Cummins Signature in it but it's just before they switched to variable vain turbo's. I've heard that they're having turbos die after 200,000klms where the traditional turbos should last a million k's. id like to check the intercooler for leaks too before I go through a turbo swap.

Cheers mate

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Hi, I had an another forum item where I mentioned an incident with new motor.

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Originally Posted by DonDownunder

Well after getting a 1000k on the clock before towing with the new motor we hitched up the caravan to our Disco3 and went down the coast to Batemans Bay fo a week. all went well but on the return trip on Friday coming up the long climb on the mountain at Wollongong I experienced a step change in power half way up. The throttle didn't seem to want to respond when fully depressed .It was stinking hot @40 deg ambient outside and I could understand the intercooler not being much use but what else would stop the power when hot & under load. The temp gauge did not indicate any higher than normal temps. Earlier on I would get a bit of black smoke when under full throttle towing accelerating but after the change ex Wollongong I could not even get the black smoke again. Any experience of others with this ??? Help please.

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Attempted full throttle towing up a long, steep hill when 40 deg outside - the ecm would be trying to save the engine.

Just an example of how this problem or a similar problem is actually quite common.

DISCO3.CO.UK - View topic - Towed with the D3 for the first time today - Engine Fault!

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Originally Posted by garrycol

Just an example of how this problem or a similar problem is actually quite common.

DISCO3.CO.UK - View topic - Towed with the D3 for the first time today - Engine Fault!

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I get a very similar result when towing every now and again the same as a few of those posts. Engine Sytem Fault and restricted power, no fault codes stored. Mainly happens when towing my camper up hill or through hilly terrain - mostly if left on cruise control and auto in D. Will happen when not towing on steep long hills - theres one just out of town that I can almost always get it to fault if I try. Best way to avoid it I found is to manualy shift down some gears and hold higher revs and no issues.

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Originally Posted by DiscoJono

G'day Don. It appears I have acquired your old Disco 3.

I'm actually happy I stumbled across this thread as it gives me insight into what actually happened to the previous engine. Car is a great improvement from my E53 X5 for the farm. I didn't want a Land Cruiser and I'm actually very impressed with the quality of ride out in the paddock.

I have, unfortunately, come across this problem you've described and this forum thread has now got me scratching my thread. I can see you had replaced the high pressure fuel pump and the intercooler hose. I thought it might be the brake light switch so I swapped it and changed a few bad bulbs.

The fact that it throws a bunch of module communication faults has now got me thinking that there is a bad earth but I imagine the dealer would've disconnected and replaced the earth leads to chassis and body when they installed the new engine. This could still be a likely cause however the main code thrown is P2290 which refers to low fuel pressure. I've also noticed the car only throws it's "limp mode tantrum", when you really put the foot to the floor. I can drive to Sydney and back, over taking cars quite comfortably and sitting on 100 without limp mode if I ensure my foot doesn't touch the floor. As soon as you push the pedal all the way down, it'll de-rate and throw a tantrum. I assume you've changed the fuel filter several times since the problem first occurred?



I'm pointing towards a bad earth or a faulty throttle pedal. Perhaps even a faulty MAF. I am however, very interested in knowing what else you've already replaced so I can cross them off the list. (If you still follow this forum of course).



I very much doubt this could be a gearbox issue but I'm not ruling it out completely. Just keen to solve this problem so my wife doesn't make me sell it.



Cheers,

Jono

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I had similar issues with multiple warnings on my Disco 3.
Turned out to be an issue with my brake controller. (Older techonsha model). Replaced with new Redarc elite model and no problems since. My mechanic said it is a common issue with Disco3's