Engine - Hesitation/Hissing Noise/DTC P0171/P0174
XT303-13DATE
06/04
X-TYPE
MODEL
2002 MY-ON
X-TYPE
VIN
C00001-ON
Hissing Noise/Driveability Issues -
DTC P017/1P0174 - Leaking IMT 0-ring -
IMT 0-ring Available Separately
Issue:
Some 2002 MY-ON X-TYPE vehicles may exhibit drivability/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 0-ring seal on the Intake Manifold Tuning (IMT) valve.
The 0-ring is now available separately to avoid the need to replace the entire valve.
Action:
In case of a customer complaint of the above condition check whether the Intake Manifold Tuning (IMT) valve 0-ring seal has failed. If so, DO NOT replace the IMT valve since the 0-ring seal is now a serviceable item. Follow the workshop procedure outlined below.
WORKSHOP PROCEDURE
Installing a new upper IMT valve 0-ring seal.
1. Open hood and install fender protection covers.
2. Disconnect the IMT valve electrical connector and reposition harness.
3. Remove the IMI valve securing bolts and displace and remove the IMI valve from the intake manifold. Remove and discard the 0-ring seal (Illustration 1).
4. Using suitable lubricant, lubricate a new 0-ring seal.
5. Install the new 0-ring seal to the IMT valve.
6. Install and align the IMT valve to the intake manifold.
7. Install and tighten the IMT valve securing bolts.
8. Reposition harness and connect the IMT valve electrical connector.
9. Remove fender protection covers and close hood.
Install a new lower IMT valve 0-ring seal
1. Open hood and install fender protection covers.
2. Disconnect battery (see Workshop Manual, section: 414-01).
3. Remove intake manifold (see Workshop Manual, section: 303-01, SR0 30.15.01).
4. Remove the lower IMT valve securing bolts and displace and remove the lower IMT valve from the intake manifold. Remove and discard the 0-ring seal (Illustration 2).
5. Using suitable lubricant, lubricate a new 0-ring seal.
6. Install the new 0-ring seal to the lower IMT valve.
7. Install and align the lower IMT valve to the intake manifold.
8. Install and tighten the lower IMT valve securing bolts.
9. Install the intake manifold (see Workshop Manual, section: 303-01, SRO 30.15.01).
10. Connect battery (see Workshop Manual, section: 414-01).
11. Remove fender protection covers and close hood.
Parts Information:
Warranty Information:
Warranty claims should be submitted quoting the information found in the table below.
This will result in payment of the stated time and, where applicable parts/miscellaneous expense codes as listed.
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