2003 JAGUAR X-TYPE ENGINE WHISTLE

  • Tiny
  • mayfield63
  • 2003 Jaguar X-Type

Noises problem
2003 Jaguar X-Type 6 cyl All Wheel Drive Automatic 108000 miles

I have a whistling sound coming from my engine. It only started when the weather got colder. If I warm up the car for about 10 minutes, the noise may or may not appear, but if I don't, it is always there and lasts until the car gets warmed up. When I first drive the car, the whistling noise starts about about 30 mph and the whistle goes up in pitch and then down in pitch as soon as I brake to stop. But if I push on the gas and accelerate fast, the noise goes away. The whistling is usually only there the first time I accelerate and the first time I stop, but then usually goes away, but not always. What do you think the problem is?

Friday, December 12th, 2008 AT 1:04 PM

7 Answers

  • Tiny
  • James W.
  • Member

I'm assuming the car runs ok, in spite of the whistle. Does it whistle any particular tune? Now I'm being facetious. When you cold start the car does it " whistle" at an idle or only when you 're moving? If may be something in the air intake system. Please advise.

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Friday, December 12th, 2008 AT 5:30 PM
  • Tiny
  • mayfield63
  • Member

The car runs fine and it doesn't whistle while idling. Only whistles when I first start driving and get up to 25-30 mph and the first time I brake to stop. Then the whistle usually stops.

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Saturday, December 13th, 2008 AT 12:16 AM
  • Tiny
  • James W.
  • Member

It could be just a belt. Before you take off on a cold start sometime, Take a spray bottle of plain water and spray the fan belts down. If the whistle goes away after a couple of trys, you may just need a belt. Let me know.

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Saturday, December 13th, 2008 AT 12:33 AM
  • Tiny
  • shanon
  • Member

Mayfield, Im having the same problem with my jag, So what ended up being the problem?

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Sunday, January 23rd, 2011 AT 4:59 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,976 posts

Sounds like a vacuum leak and as it is affected by braking, I wouls suggest checking the brake booster vacuum one-way valve.

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Saturday, February 11th, 2012 AT 6:00 AM
  • Tiny
  • m3gtr8
  • Member

True, vaccum leaks and brake booster valve, very common on x-type.

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Friday, April 20th, 2012 AT 3:05 PM
  • Tiny
  • rivermikerat
  • Expert
  • 6,174 posts

If it isn't the one way valve, it could also be the booster front seal between the booster and the master cylinder.

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Sunday, May 6th, 2012 AT 7:29 PM

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