Engine Controls - Stumble/Misfire on Accel./MIL/Misfire DTC's
TSB 13-3-303/07/13
3.5L GTDI - INTERMITTENT STUMBLE/MISFIRE ON
ACCELERATION FROM HIGHWAY CRUISE IN HUMID
OR DAMP CONDITIONS WITH POSSIBLE DTC
FORD:
2011-2012 F-150
This article supersedes TSB 12-10-19 to update the Issue Statement and Service Procedure.
ISSUE
Some 2011-2012 F-150 equipped with a 3.5L gasoline turbocharged direct injection (GTDI) Ecoboost engine may exhibit an intermittent stumble and/or misfire on hard acceleration after an extended drive at highway speeds during high humid or damp conditions. This may result in either a steady or flashing malfunction indicator lamp (MIL). Diagnostic trouble codes (DTC's) P0304, P0305, P0306, or P0430 may also be present. Evidence of misfire may be available in Misfire Freeze Frame Data even with no active DTC's.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Acquire Misfire Freeze Frame Data and DTC's with the IDS. Use the following steps with IDS to obtain Misfire Freeze Frame Data.
a. Select Toolbox
b. Then Data Logger
c. Then Modules
d. Then PCM
e. Next select the following PIDS: MFF_LOAD and MFF_RPM
2. Check for DTC P0430. Is DTC P0430 present?
a. Yes - replace the left bank catalytic converter assembly. Refer to Workshop Manual (WSM), Section 309-00. Proceed to Step 3.
b. No - Proceed to Step 3.
3. Is the misfire concern only repeatable in humid or damp conditions?
a. Yes - proceed to Step 4
b. No - this article does not apply. Refer to
Powertrain Control Emission Diagnosis
(PC/ED) Manual Section 3: Powertrain
Symptom Index to inspect such areas as
Ignition, Compression, and Injection.
4. Does the Misfire Freeze Frame Data indicate engine speed above 2500 RPM and load 100% or above? (Figure 1)
a. Yes - proceed to Step 5.
b. No - this article does not apply. Refer to
PC/ED Manual Section 3: Powertrain
Symptom Index to inspect such areas as
Ignition, Compression, and Injection.
5. Is the Charge Air Cooler (CAC) equipped with an air deflector plate? (Figure 2A)
a. Yes - proceed to Step 8.
b. No - proceed to Step 6.
6. Install a new CAC, new air deflector plate, and
original shield using new retaining push pins.
Refer to WSM, Section 303-12. (Figure 2B)
Proceed to Step 7.
7. Reprogram the PCM to the latest calibration
using IDS release 79.02A or higher. This new
calibration is not included in the 2012.5 DVD.
Calibration files may also be obtained at the website.
8. Install a new CAC and the original air deflector
plate and shield using new retaining push pins.
Refer WSM, Section 303-12.
NOTE
PLEASE ADVISE THE CUSTOMER THAT THIS
VEHICLE IS EQUIPPED WITH AN ADAPTIVE
TRANSMISSION SHIFT STRATEGY WHICH
ALLOWS THE VEHICLE'S COMPUTER TO LEARN
THE TRANSMISSION'S UNIQUE PARAMETERS
AND IMPROVE SHIFT QUALITY. WHEN THE
ADAPTIVE STRATEGY IS RESET, THE
COMPUTER WILL BEGIN A RE-LEARNING
PROCESS. THIS RE-LEARNING PROCESS MAY
RESULT IN FIRMER THAN NORMAL UPSHIFTS
AND DOWNSHIFTS FOR SEVERAL DAYS.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
OPERATION DESCRIPTION TIME
130303A 2011-2012 F-150 3.5L 0.8 Hr.
GTDI: Check DTCs,
Replace CAC Assembly,
Includes Time To Transfer
Or Install New CAC Shield
(Do Not Use With Any
Other Labor Operations)
130303B 2011-2012 F-150 3.5L 1.2 Hrs.
GTDI: Check DTCs,
Replace The Left Catalytic
Converter, Replace CAC
Assembly, Includes Time
To Transfer Or Install New
CAC Shield (Do Not Use
With Any Other Labor
Operations)
130303C 2011-2012 F-150 3.5L 1.0 Hr.
GTDI: Check DTCs,
Replace CAC Assembly,
Includes Time To Transfer
Or Install New CAC Shield
And Reprogram The PCM
(Do Not Use With Any
Other Labor Operations)
130303 2011-2012 F-150 3.5L 1.4 Hrs.
GTDI: Check DTCs,
Replace The Left Catalytic
Converter, Replace CAC
Assembly, Includes Time
To Transfer Or Install New
CAC Shield, And
Reprogram The PCM (Do
Not Use With Any Other
Labor Operations)
130303E 2011-2012 F-150 3.5L 0.8 Hr.
GTDI: Check DTCs,
Replace The Left Catalytic
Converter (Do Not Use
With Any Other Labor
Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
5E212 (OPERATION B AND D) 12
6K775 (OPERATION A AND C) 42
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