Thread: Disco 4 Engine System Failure Warning - beware!

Did you have Q093 done on your D4 before you towed your van?

Some facts about the conditions that caused this might be handy as well.

Temp on the day.
Weight of van.
wind conditions.

I recently finished a 4000klm trip with my Caravan that involved a number of very steep climbs. I had no issues at all.

Things do happen sometimes and thats the luck of the draw.

Thanks Mowog

Yep, Q093 has been done. At least I am told it was. That was a previous and different power loss problem I also experienced. This problem is another one in addition to the one Q093 supposedly fixed.

I don't think the "luck of the draw" applies when there are so many instances of the same problem.

True that most vehicles will probably never have this problem, but just one is too many, particularly when its mine, and it is dangerous, I was behind the wheel at the time!

Thanks for the conditions suggestions, but they should not have an effect if the vehicle is operating (set up) correctly for Australian conditions.

At the time outside temperature was below 20 degrees, no wind, van weight was 1840kg, well below the 3500kg "claimed" capacity of the vehicle.

I had a power loss problem after Q093. But on the return visit I assume they fixed the loose pipe that was dumping boost. Because the problem went away.

On my trip daytime temps were around 25deg I had head wind conditions and some very steep climbs. The van weight was around 2300kg.

Was the loose pipe apparent immediately?

My Q093 was done a few months ago and the D4 has worked well (no heavy towing though) since, so I doubt that is my problem but the suggestion is received with thanks. I will pass it on to those who have my vehicle at present. Any suggestions welcome!

It was only under strain this new power loss problem happened with my vehicle, and then only after 6 hours. If it were a loose pipe after the turbo actuator replacement in Q093, I would have thought it would show up earlier.

One additional thing: Even now, without the Van attached, the vehicle works well, with apparently full power, even though I can tell it is not working "in the same engine management mode" as it was before the "Engine System Fault" fault flagged.

The problem I had after Q093 was immediate.

I drove home in very heavy traffic... Something didn't feel right but I had no chance to poke it a bit.

The next day my wife (lead foot) drove it and she called me asking why the D4 was down on power. It was significantly down on power with no warning lights.

The dealer re-flashed the car and claimed to find no other issues. But the power was back.

There were some problems with the software change when the 'enhancement program' was done on the D3s. Sometimes it did not take and had to be re-done. Could be a software issue after Q093 but it looks like LRA has decided to change ECUs in case it is a hardware issue.

It is known for the Dual Battery installations to cause quirks with the modern systems in the D3/RRS/D4...

Hence Traxides LR approved kit...

Std (Redarc / Surepower / Pirahna) kits can distribute power causing the vehicle to go into a system shut down mode to preserve the basics.

These include suspension dropping, ICE turning off etc...

So it does have a real potential...

To get on here in a big brash font saying it happens everywhere and is a known issue is akin to saying dont use tyres...
Theyre known everywhere to blow out...

Losing power overtaking is troublesome - yes... But not to the dramatic point you're making - sorry..

I've had a Commodore do exactly the same thing passing a road train.. Wasnt nice, but is easily sorted by braking and slotting back in behind.

Get your vehicle checked and be happily on your way

Hi Tombie, Phil has my kit fitted and I am very thankful Phil also has a good background in electronics otherwise there could have been loads of totally unnecessary problems for him and myself.

There is a lot more to the incident and although LRA did seem to do the right thing, it’s not my place to say anything, but I will say that the dealership that “FIXED” the problem needs a bloody good kicking and don’t blame Phil for his stile of warning.