Range Rover (LP) V8-4.0L (1999)
Intake Air Plenum: All Technical Service Bulletins
Engine - MIL ON/Rough Running
No:
30/02/00/NAS
Ref:
Issue:
1
Date:
04/21/00
Leaking Vacuum Port Cap
AFFECTED VEHICLE RANGE:
Range Rover (LP)
All 1999
Discovery Series II (LT)
All 1999 and 2000 Non-LEV
(Up to engine number 56D 29518A)
SITUATION:
ROUGH RUNNING SYMPTOMS AND POSSIBLE MIL ILLUMINATION
The customer may experience rough running and possibly a MIL light illumination. Upon investigation of the MIL light, the P-codes will indicate a lean
mixture.
RESOLUTION:
INSPECT AND REPLACE PLASTIC CAP
The plastic cap covering the intake plenum vacuum port may deteriorate and leak. Inspect to verify that a split cap is the cause of the problem and
replace the cap with the new part.
PARTS INFORMATION:
LKD000020 Vacuum Port CapQty 1
WARRANTY CLAIMS:
30.25.89/26
Time 0.20 hrs.
Inspect for missing or damaged cap and install vacuum new cap
30.25.89/27
Time 0.45 hrs.
Confirm lean mixture using TestBook, clear codes and install new vacuum cap
FAULT CODE: N
Normal warranty policy and procedures apply
REPAIR PROCEDURE
INSPECT AND INSTALL NEW PLUG
1.
If a MIL is illuminated, connect TestBook and investigate the cause of the problem.