New Tsb

[fmc_smt]

Not for the Mustang but the f-150 , again not for t he mustang . But I do find it interesting .
TECHNICAL SERVICE BULLETIN
5.0L - Engine Rattle Noise On Deceleration And/Or Acceleration 18-2354
27 November 2018

Model:

Ford
2018 F-150
Issue: Some 2018 F-150 vehicles equipped with a 5.0L engine may exhibit an engine rattle noise during a deceleration tip-out throttle maneuver from 1500 RPM to 800 RPM and/or during an acceleration tip-in throttle maneuver around 2000 RPM.

Action: Follow the Service Procedure steps to correct the condition.



Warranty Status: Eligible Under Provisions Of New Vehicle Limited 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.

Labor Times

Description Operation No. Time
2018 F-150 5.0L: Reprogram The PCM Includes Time To Road Test To Verify Concern (Do Not Use With Any Other Labor Operations) 182354A 0.6 Hrs.
Repair/Claim Coding

Causal Part: RECAL
Condition Code: 04

Service Procedure

1. Does vehicle exhibit an engine rattle noise during a deceleration tip-out throttle maneuver from 1500 RPM to 800 RPM and/or during an acceleration tip-in throttle maneuver at approximately 2000 RPM?

(1). Yes - proceed to Step 2.

(2). No - this article does not apply. Refer to the Powertrain Controls/Emissions Diagnosis (PC/ED) Manual for normal diagnostics.

2. Reprogram the powertrain control module (PCM) using the latest software version of the appropriate Ford diagnostic scan tool.

(1). NOTE: 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.


© 2018 Ford Motor Company

All rights reserved.

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.

he mustang . But I do find it interesting .

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[Dusten]

Sounds like they think the rattle is detonation? Trying to tune it out?

 

[brucelinc]

Very odd. Not sure how a PCM update would affect an engine "rattle" unless they think it is detonation. How could detonation occur on deceleration when there is no load on the the engine?

 

[fmc_smt]

I would assume it would have to do with vct operation .

 

[Angry50]

if this was the fix every car with a tune would be fixed.

 

[bootlegger]

if this was the fix every car with a tune would be fixed.

This.

I have datalogged many times while forcing the rattle. The knock sensors never see it.

 

[Angry50]

This.

I have datalogged many times while forcing the rattle. The knock sensors never see it.

same here i am gonna try the cutting open the oil filter to see how that looks. other than that i dont know how to tell there is an issue

 

[2018S550GT]

There was a TSB in 2011 that is similar to this one: TSB 11-7-4

Some 2011 Mustang vehicles equipped with a 5.0L and built on or after 8/17/2010 may exhibit a piston rattle noise in cold ambient temperatures of 10 degrees Celsius (50 degrees Fahrenheit) and below. The noise normally occurs in the 2000-3500 RPM range and will decrease as engine temperature warms up. An update of the powertrain control module (PCM) calibration to reduce intensity and duration of the noise is now available.

 

[steveo1960]

This is interesting:

 

[Condor1970]

What's funny, is my car starting making this noise right after they replaced my clutch. Went away when warm. I honestly haven't noticed it recently though. I'll have to do some revving when cold again, to see if it's still there.

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