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huntertec 11-26-2012 06:37 AM

Diesel, power loss, limp mode
I have a 05 X5 diesel and have had no luck with this one despite exhaustive efforts. Problem in sequence when I'm accelerating the engine loses boost, a dull siren sound starts on lower right side of engine, transmission won't kick down, if I continue to accelerate the siren sound gets louder and then the vehicle goes into limp mode. I stop turn off the engine wait 10 seconds restart the engine and its good as gold, I can accelerate hard and no problem. So the problem isn't always there however it is becoming more frequent.You can imagine how dangerous this can be when overtaking. Any clues much appreciated.

Skier1 12-12-2012 06:04 AM

Hi Huntertec have you had any luck rectifying the problem you are having with your vehicle ?

huntertec 12-12-2012 07:04 AM

Hi SKIER1, thanks for asking but no luck at this stage, some are pointing to the Boost Control Solenoid, or the Map sensor which sits at the rear of the inlet manifold, but there are no fault codes coming up for these, had the auto checked out and its fine. Total pain this one otherwise the vehicle is perfect. Next week I'm taking it to a mech who assures me his code reader will find it. Failing that I'll take it to Sydney for an All Wheel Dino, the same people that did the remap some years ago, with it running and hooked up they might be able to pinpoint where this siren sound is coming from. Cheers.

Skier1 01-09-2013 07:00 AM

Hi Huntertec. Any good news on the problem with your vehicle yet? Just curious if you have found the issue as yet and what it was .

huntertec 01-09-2013 08:00 AM

The ulimate fix
Hi Skier, well I did fix it.... I traded it in and bought a Jeep SRT8 ALPINE. Yes an expensive fix but it did the job :D. Seriously I sold it for business reasons at 8 years old I was advised to trade up so now I own a Jeep, (doesn't sound the same does it ) I looked at the Euro Sav's and for the money it was impossible to beat. Fortunately fuel isn't an issue with business, but in saying that I can't complain with deactivation of 4 cylinders when cruising, no complaints. Cheers.

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