Exhaust System - Excessive Engine/Exhaust Noise/Odors
TSB 11-4-1704/27/11
3.0L ENGINE - EXCESSIVE ENGINE/EXHAUST NOISE
OR EXHAUST ODOR DUE TO EXHAUST FLANGE
LEAK
FORD:
2007-2008 Escape
MERCURY:
2007-2008 Mariner
This article supersedes TSB 10-24-13 to update the Part List.
ISSUE
Some 2007-2008 Escape and Mariner vehicles equipped with a 3.0L engine may exhibit excessive engine and/or exhaust noise, or exhaust odor due to an exhaust leak at the joint between the catalytic converter manifold flange and cylinder head joint. The malfunction indicator lamp (MIL) will not be illuminated, and no related diagnostic trouble codes (DTC) will be present.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
This procedure only applies if no related DTCs are present.
1. Remove affected catalytic converter manifold assembly. Refer to Workshop Manual (WSM), Section 309-00.
2. Clean both engine and manifold sur[aces. Refer to WSM, Section 303-00 for Exhaust Manifold Cleaning and Inspection procedures.
3. Replace exhaust manifold gasket, exhaust manifold studs and nuts, and reinstall the original catalytic converter manifold. Refer to WSM, Section 309-00.
a. It is very important the two stage manifold nut torque sequence is followed.
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
110417A 2007-2008 Escape, 1.4 Hrs.
Mariner 3.0L DOHC:
Replace The Left Exhaust
Manifold Gasket, Studs
And Nuts Includes Time
To Remove And Install
Exhaust Manifold,
Generator, Intermediate
Shaft And Check DTCs
(Do Not Use With Any
Other Labor Operations)
110417B 2007 Escape, Mariner 3.0L 3.0 Hrs.
DOHC: Replace The Right
Exhaust Manifold Gasket,
Studs And Nuts Includes
Time To Remove And
Install Exhaust Manifold,
Generator, Intermediate
Shaft, And Check DTCs
(Do Not Use With Any
Other Labor Operations)
110417B 2008 Escape, Mariner 3.0L 1.7 Hrs.
DOHC: Replace The Right
Exhaust Manifold Gasket,
Studs And Nuts Includes
Time To Remove And
Install Exhaust Manifold,
Generator, Intermediate
Shaft, And Check DTCs
(Do Not Use With Any
Other Labor Operations)
110417C 2008 Escape, Mariner 3.0L 2.5 Hrs.
DOHC: Replace Both Left
And Right Exhaust
Manifold Gaskets, Studs
And Nuts Includes Time
To Remove And Install
Exhaust Manifold,
Generator, Intermediate
Shaft, And Check DTCs
(Do Not Use With Any
Other Labor Operations)
110417C 2007 Escape, Mariner 3.0L 3.7 Hrs.
DOHC: Replace Both Left
And Right Exhaust
Manifold Gaskets, Studs
And Nuts Includes Time
To Remove And Install
Exhaust Manifold,
Generator, Intermediate
Shaft, And Check DTCs
(Do Not Use With Any
Other Labor Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
5G232 24
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