Thread: D4 Restricted Performance

My 3.0 got another 'restricted performance' today after taking off from having idled for a couple of minutes soon after driving off that couldn't be cleared by restarting. The codes pointed to a sticky primary turbo actuator again - its been about 6 months since the first bout. Clearing the faults with the engine running then giving the engine a few quick rev bursts as soon as the red triangle went out did the trick. I suspect the engine doesn't get enough work to move the actuator often enough. Note to self: remember to use more fuel more often!

It seems there's a lot to be said for a good old "Italian tune up" once in a while Graeme!

With my diesel, I have one day a fortnight where I drive it like I stole it.

Originally Posted by sniegy

Phil,
I have used Shell since day 1 & have not had any issues at all, Even when i travel i use a Shell servo when i find it.

Cheers

Shell is my local and I use it exclusively around home.

On the road I'll use BP, or Shell and will never fill up at a Woolworths Caltex.

BP in Whyalla has "Ultimate Diesel" but cant be bothered driving the 6km to get it

We've had this "Restricted Performance" come up, took it down to the dealer, they put it on the computer, came up with MAF circuit fault, which could mean any number of things, said they didn't have time to check it out, so they said if it happens again bring it back, hasn't happened again, but we thought we should take it back to at least have it checked, but because no faults came up, they said it was all good and wouldn't look into it any further.

Baz.

I've never stopped to think about the quality of my diesel. There is really that big a difference between the oil companies?

Originally Posted by westek

Just picked up the car.

The official response was -

"Check DTC's - P2264-00 water in fuel sensor circuit logged. Inspected for water in diesel - none evident. Removed and replaced fuel filter housing assembly to rectify.

Car is running well again, fingers crossed.

I'm hoping that I've overcome mine's P2264 water sensor circuit error / restricted performance on first start-up each day since the gearbox was R&R'd by spraying contact cleaner onto the 3 contacts of the 3-pin connector for the water sensor wires attached to the filter housing. I suspect that the connector was disconnected during the gearbox R&R. Earlier attempts to reseat the single wire connector to the sensor itself were futile.

Toyota have significant water collection filters, and have warnings for them that I think stop the motor. And people add larger water filters to their fuel systems in Toyotas.

What is the system that Discovery uses? I know that with the Prado, you get a seperate brochure for the water filter devise used ... I did not recieve such a brochure in my Discovery. I am wondering what technology Discovery now uses?

After unsuccessfully trying to improve electrical connections to the sensor controller and the sensor itself I capitulated and purchased a new fuel filter housing assembly. Having found that the sensor controller is attached with a single screw I tried unsuccessfully to clean the earth electrical connection between the controller's plastic block and the exposed wire going into the top of the filter housing. I eventually fitted the controller from the new housing, not wanting to unnecessarily disconnect fuel lines covered in dirt and the fault is now gone. Its rather expensive to have to buy the whole filter assembly just to get little plastic-enclosed sensor control circuit c/w its short electrical harness and connectors. The new one is an updated design so perhaps it will last longer. It has the number 41948 on both the plastic and on a tag on the harness but I can't find any references.