Thread: D4 surge while towing uphill

Thanks. We will contact JRL next week and raise this. I have also sent you a PM.
Much appreciated

Originally Posted by Graeme

This is only when stopped with brakes applied to prevent rolling back when the brakes are released. My 2010 D4 is supposed to have the feature but I've not noticed it operating.

Graeme, I have only noticed this working when in low range.

Originally Posted by SBD4

Graeme, I have only noticed this working when in low range.

Works on my MY12 low or high. I use it everyday going up a hill to take the kids to school. Stays on for about 3 seconds, then releases.
I think it has even happened in reverse up a slope.....the breaks still hold.

Brett.....

Originally Posted by discotwinturbo

Works on my MY12 low or high. I use it everyday going up a hill to take the kids to school. Stays on for about 3 seconds, then releases.
I think it has even happened in reverse up a slope.....the breaks still hold.

Brett.....

I wonder if there's a cfg setting to find...

My MY10 D4 3.0l is in at the dealers at the moment for similar issue. Power drops off to a point where accelerator seems unresponsive, then comes back on the power. Happens usually around 1600 rpm when under some load, ie going up slight to moderate incline, towing trailer etc. Also seems to be dormant when outside temp is below ~20. Have been chasing this issue since January. It hadn't throw a fault this whole time until just a couple of weeks ago coming home from Fraser Island on the Bruce highway towing the camper. Went into restricted performance mode/limp mode.

Heard from the dealer today who said the think they've found it. They have a compressor shutoff valve on order which should be fitted tomorrow. This sounds similar to what Graeme was referring to earlier in this thread.

I'll keep checking in on this thread to see how things transpire and keep you up to date with my results.

This is another interesting thread with some similarities.

http://www.aulro.com/afvb/d3-d4-rrs/...lfunction.html

Matt

Hi Matt,

That's the valve - isolation or shut-off valve and your symptoms were as mine were. I understand that the replacment valves have a modification that's supposed to stop grit from getting between the bracket mounted on the shaft and the housing. I'd like to know just what the difference is in case I can modify mine to prevent it happening again.

Edit: If Meccles' RRS problem is the same then maybe the design hasn't changed or hasn't changed enough.

Hey people's
Throw my two bob's worth in. I can get mine to surge lose power then take off with a cloud of black smoke. Usually when manually upshifting on acceleration from second to third at approx 2000rpm. But typically dealer can't fault it.
Does this sound like a secondary turbo controller issue.
Cheers
Steve

Mine doesn't provide smooth power when manually upshifting with part throttle when the 2nd turbo was in use but is not in the higher gear, which is somewhere around 2000-2200 rpm in the lower gear. However IIRC it was much better just after the valve's spindle was cleaned so might have to give it another clean. As I've already stated, its easy to check.