New car (to me) ... a couple times now, when in park -- my RPMs will wobble up and down (and the car shaking slightly) but this will disappear when I turn on the climate control.

It's resting at about 500rpm. Turning climate control on would increase it by only 100 rpm or so, but enough to make the shake / rough-idle go away.

Thanks folks.

 

Possibly the same issue.....

http:// https://www.jaguarforums.com/forum/xf-xfr-x250-44/xfr-rpm-jumping-144882/

 

thank you kindly for the response. Unfortunately (or fortunately?) it seems to only happen when in park, and the car is confused about at what point to idle...I noticed you replaced a component, were you having symptoms closer to mine or the OP on the linked-thread?

I have not noticed the wonky RPM issue at any other time other than when in park and climate control is off (yet... )

 

It began exactly like yours.....over time more like OP of linked thread. Im sure its the same issue.

 

Thanks again.

I'm a jaguar novice and would appreciate your experience -- do you think this is an issue Jaguar will recognize? It doesn't always happen, and I do have 3K left on my warranty.

 

This is the second similar style vacuum hose Ive replaced . ..The first was causing a too lean condition in both banks. The hoses are guaranteed to fail over time and Jaguar service knows this....Easy fix for them BIG BUCKS from loyal customers ! Take it in and force them however you can to honor their warranty .