Engine Controls - Vacuum Leakage Noise Possible DTC's
TSB 08-12-406/23/08
3.0L - VACUUM LEAKAGE NOISE AND MIL ON WITH
LEAN CODES
FORD:
2005 Taurus
LINCOLN:
2003-2005 Lincoln LS
MERCURY:
2005 Sable
ISSUE
Some 2005 Taurus and Sable vehicles equipped with a 3.0L 2V and some 2003-2005 Lincoln LS vehicles equipped with a 3.0L 4V engine may exhibit a vacuum leakage noise or lean codes and/or malfunction indicator lamp (MIL) on. The cause may be a leak at the 0-ring on the intake manifold tuning (IMT) valve.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
Verify the concern by removing the IMT valve from the intake manifold and visually inspecting the 0-ring condition. If the 0-ring is flat or damaged, replace only the 0-ring not the actuator.
For Lincoln LS, refer to the 2005 Workshop Manual (WSM), Section 303-14, IMT valve.
For Taurus vehicles, the IMT valve is located on right front of upper intake manifold:
1. Remove the two (2) retainers.
2. Disconnect the electrical connector.
3. Remove the IMT valve.
NOTE
COAT THE IMT VALVE WITH CLEAN ENGINE OIL BEFORE INSTALLING IT IN THE INTAKE MANIFOLD.
If the IMT valve 0-ring is not the cause, continue with normal diagnosis.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
081204A 2005 Taurus, Sable 3.0L 0.5 Hr.
2V : Replace The IMT
Valve 0-ring, Includes
Time To Remove And
Install The IMT Valve (Do
Not Use With 12650D)
081204A 2003-2005 Lincoln LS 3.0L 0.8 Hr.
4V: Replace The IMT
Valve 0-ring, Includes
Time To Remove And
Install The IMT Valve,
Cowl, Wiper Arms (Do Not
Use With 12650D,
17526A)
DEALER CODING
CONDITION
BASIC PART NO. CODE
9L490 D8
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