Some 2009-2011 Mariner and 2009-2012 Escape vehicles equipped with a 2.5L DOHC engine and automatic transmission may exhibit a drone/moan or rattle noise.

Some 2009-2011 Mariner and 2009-2012 Escape vehicles equipped with a 2.5L DOHC engine and automatic transmission may exhibit a
drone/moan or rattle noise.


Technical Service Bulletin # 11-10-26 Date: 111027
2010-2021 Ford Truck Escape 4WD L4-2.5L  Page 10
Engine/Charging - Drone/Rattle At 1300-1400 RPM
TSB 11-10-26
10/27/11
2.5L DOHC WITH AUTOMATIC TRANSMISSION -
DRONE/MOAN OR RATTLE NOISE AT 45-61 KM/H
(28-38 MPH) AND 1300-1400 RPM
FORD:
2009-2012 Escape
MERCURY:
2009-2011 Mariner
ISSUE
Some 2009-2011 Mariner and 2009-2012 Escape vehicles equipped with a 2.5L DOHC engine and automatic transmission may exhibit a
drone/moan or rattle noise. The noise typically occurs while driving up a slight incline, under light throttle at 45-61 Km/h (28-38 MPH) at
1300-1400 RPM, in 5th gear. Torsional engine pulses may cause front end accessory drive (FEAD) resonation. The noise may be present with the
A/C on or off but is typically aggravated when the A/C compressor cycles on.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
Install Generator Pulley Kit. Refer to instruction sheet provided with the kit.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited 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
111026A 2009-2012 Escape, 0.7 Hr.
2009-2011 Mariner 2.5L
DOHC: Install Alternator
Pulley Kit (Do Not Use
With Any Other Labor
Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
10346 42
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