2003 Jaguar X-Type Valve

HISSING NOISE/DRIVEABILITY ISSUES - DTC P0171/P0174 - LEAKING IMT O-RING - IMT O-RING AVAILABLE SEPARATELY
TECHNICAL SERVICE BULLETIN
Reference Number(s): XT303-13, Date of Issue: June, 2004
JAGUAR:2002 MY-ON X-TYPE
VIN:C00001-ON

Related Ref Number(s): SECTION XT303, NO. 13, XT303-13
ARTICLE BEGINNING
Issue
Some 2002 MY-ON X-TYPE vehicles may exhibit driveability/hesitation concerns. Customers may also complain about a hissing noise from under the hood.
The concern may be caused by a vacuum leak from the O-ring seal on the Intake Manifold Tuning (IMT) valve.
The O-ring is now available separately to avoid the need to replace the entire valve.

hope this helps, print it out and take it to the dealer !