Hello guys! I just bought my first Jaguar. A 2004 X Type with a 2 liter V6.

Great car, however, it's making a whining sound while accelerating. Really loud when the engine is cold. As soon as I start the car and rev it, there is no sound whatsoever. But, if I shift into Drive or Reverse, and back into park and rev it, it whines. That's it. I don't even have to move the car. Won't make a sound until I shift into a gear, but after I shift, it whines continuously with the RPM. It's a fairly loud groaning whine. Kind of scary.

It quiets down when warmed up. But it's still noticable. I googled a bit and found out that it could be the transfer case, but my car, being FWD, doesn't have a transfer case. Pretty confused right now.

I took a quick video and uploaded it on YouTube. Please have a listen.


Any ideas?

Thanks!

 

 

Use jaguarforums + X-Type + loose exhaust heatshield for your Google search criteria. As iownme says, there's plenty of relevant posts.

Graham

 

Thanks for the replies! I tried the search criteria, got results, but only found one video, and that was about a constant rattle.

If it is a heat shield, how can the pitch change with engine RPM?

This only happens when revving the engine. When I started the car and revved it, it didn't make a sound. I then shifted into D and kept it for 2 seconds, then to R, again for 2 seconds, and then shifted back to P. Revved it, THATS when the whine started! I didnt move the car, Just kept my foot on the brake and shifted to D and back.

Heres a video I took while revving, right after starting the car.


And heres a video I took while revving, after shifting to D and back.

So, no whine until I shift into a gear and back to Park. It can't be the gearbox because its fully disengaged when in Park, right?

 

 

The noise from the heat shield is a harmonic vibration; as the revs rise so does the vibration and hence the pitch.
Check it, what have you got to lose?

 

 

 

There's another possibility that others have found when it was not a heat shield or a cat/muffler rattle.

Check the

X Type Rear Motor Mount C2S38951

also called the "dogbone".