DonDownUnder's D3 dropping into Limp Mode

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Originally Posted by garrycol

No - only higher speeds usually going up hill when the car is already in a high load situation. I have put it down to the software writers for the ECU only taking into account MAP in high load conditions when unloaded and not taking the additional loads of towing. As a result the engine is really trying to suck in air in these high load conditions causing the MAP to be lower to be lower than the ECU expects so throwing up the fault. (interestingly it does not actually throw up a fault code - I have checked a few times with my FCR). I believe it is the same fault that people have reported when towing vans on cruise where the cruise goes to WOT to maintain speed.

All conjecture of course as I do not have the skills to check this all out. Oh my engine has a BAS remap (increases torque at 3000 rpm but not much extra power) and is blanked - has made no difference as the engine does it before and after the remap.

Now I drive to suit and I rarely see it - afterall you should not be driving uphill towing a caravan over 110kph with a sudden WOT - gradual increase in throttle to full throttle does not cause the fault.

A typical grey nomad, caravanner driving style does not cause the issue.

garry

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Sounds like you have a MAP sensor that needs replacing to me - might be fine within normal range, but get it up towards the higher boost and it will go out of expected range. I would be borrowing one and seeing if it fixes it.

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Originally Posted by DiscoJono

Cheers Don. Great to know. I just pulled the MAP sensor and it was absolutely filthy. Gave it a good hit with Contact Cleaner and reinstalled. Limp mode has disappeared. I can plant my foot to the floor without the dreaded "ding ding". Hopefully it stays away. Very happy with the car though. Built nice and tough and well looked after. Cheers!

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Yes if you are not blanked you need to clean this regularly - when you have an hour or two take out the plastic Y inlet manifold and you will find it lined with 1cm thick black yukkie oily sludge like you found on the MAP sensor - cleaning this out - is actually what takes the time may also help.

Sorry Ean - just spotted your post saying the same thing.

Garry

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Originally Posted by Grentarc

Sounds like you have a MAP sensor that needs replacing to me - might be fine within normal range, but get it up towards the higher boost and it will go out of expected range. I would be borrowing one and seeing if it fixes it.

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Well maybe but mine is clean - no longer gets the crap on it as I am blanked - if it was faulty it would throw up a fault on my Faultmate but I might put a new one in at the next service - every D3 that tows a heavy van with cruise control on gets this fault sooner or later so it unlikely to be a sensor but who knows. This problem is also well reported on forums around the world.

Cheers

Garry

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Originally Posted by garrycol

Well maybe but mine is clean - no longer gets the crap on it as I am blanked - if it was faulty it would throw up a fault on my Faultmate but I might put a new one in at the next service - every D3 that tows a heavy van with cruise control on gets this fault sooner or later so it unlikely to be a sensor but who knows. This problem is also well reported on forums around the world.

Cheers

Garry

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NEVER would I ever contemplate towing a Caravan or any load in Cruise control or shift to overdrive or 6th gear. Urrs on danger

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Originally Posted by DonDownunder

Hello again. You will also find a recent new suspension compressor fitted and a steel sump cover on auto gbox with servicable filter. Brakes just done with new pads and machined disks. Main battery new with engine. Recon alternator late 2015. We had weight issues with GVM when hitched to 3.3 ton cvan and could not have rear 5 seats fitted or reserve tank full hence with running problems we had to sell. Frankly was a great vehicle . We have a new GX 200 series Cruiser now to match the Caravan. I will put a couple of items in the forsale section for local pickup only so keep a lookout. HAPPY NEW YEAR to all

Sent from my SM-G925I using AULRO mobile app

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Thanks for letting me know, Don. Appreciate it. I did crawl under before I purchased the vehicle from the dealer and noticed the new brakes and tyres. Very impressive bash plate protection under the car. I drove through a paddock of freshly cut Canola stalks and was amazed how well protected everything was. I didn't know about the Limp mode fiasco before I bought it but I'm hoping I've solved it now. Being a long motor, I assume they just pulled the turbo and all components from old motor to new motor. I'm sure they would've got a good look at the EGR condition though and wouldn't have reinstalled it if it was going crook. Hope you enjoy your Cruiser. I do remember the dealer telling me you'd traded it on one. I have a 2014 GXL ute that I'm very happy with. The 200 series was just a bit far out of reach for my budget..
The Disco is going well though. I did have to engineer a longer handle for the spare tyre carrier as my 5ft wife struggled to secure it. I'm still pleading with her to keep it.

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Originally Posted by DiscoJono

Thanks for letting me know, Don. Appreciate it. I did crawl under before I purchased the vehicle from the dealer and noticed the new brakes and tyres. Very impressive bash plate protection under the car. I drove through a paddock of freshly cut Canola stalks and was amazed how well protected everything was. I didn't know about the Limp mode fiasco before I bought it but I'm hoping I've solved it now. Being a long motor, I assume they just pulled the turbo and all components from old motor to new motor. I'm sure they would've got a good look at the EGR condition though and wouldn't have reinstalled it if it was going crook. Hope you enjoy your Cruiser. I do remember the dealer telling me you'd traded it on one. I have a 2014 GXL ute that I'm very happy with. The 200 series was just a bit far out of reach for my budget..
The Disco is going well though. I did have to engineer a longer handle for the spare tyre carrier as my 5ft wife struggled to secure it. I'm still pleading with her to keep it.

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Thanks for that. Please
check out the Market Place I have correct engine oil for sale if interested you do servicing yourself

Just a quick heads up. Before replacing a sensor, try reversing the connection. That is if there are two lugs.

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Originally Posted by garrycol

every D3 that tows a heavy van with cruise control on gets this fault sooner or later so it unlikely to be a sensor

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All the more likely to be a tired sensor as they deteriorate with usage (they're a mechanical device) and eventually fall out of spec.

Had to make a spontaneous trip down to Sydney and back last night. Great excuse to test the car for Limp mode. Foot to the floor overtaking several cars up Cherry Tree and Capertee Valley as well as the climb up Great Western Hwy. it seems the sensor clean has done the trick. I'll blet pulling the rest of that "Y" manifold and giving it a good clean when I service the car on Saturday.

Are sensors a service item or are they just left to degrade and/or die before being replaced?

Martin