Jaguar x type 2.5 auto awd petrol estate - Strange whistle

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Mon 17 Jan 2011 17:16
Jaguar x type 2.5 auto awd petrol estate - Strange whistle - Animaux4

This whistle only occurs in the winter when the temperature drops below 10C and at a speed of between 27 & 29 mph. This happens even when the a/c is turned off and all climate controls are off. It also happens when free wheeling. The sound seems to come from the middle of the dash. The warmer outside the quieter the sound. The whistle comes in on acceleration and on decelleration between the 27 & 29 mph. Can anyone help - its driving me nuts! I have a recording if required.

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Mon 17 Jan 2011 19:29
Jaguar x type 2.5 auto awd petrol estate - Strange whistle - injection doc

I suspect the whistle is comming from a vacum leak from one of the control flaps for the heating. It may iether be a vacum hose or control module that is leaking. It will require some dismantling & investigation. I seem to recall having done these in the past on Mondeo's

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Mon 17 Jan 2011 19:41
Jaguar x type 2.5 auto awd petrol estate - Strange whistle - injection doc

also if its more of a swish or whine, its very possible it could be the pinion beaings in the transfer you can hear ! often noted at slow speeds on & off the throttle and only on AWD model

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