timing phaser TSB coming

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Supergumby5000

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That is because of dealer speculation; they couldn't identify the root cause of the issue so they made an over-repair.

PLEASE stop the panic and doomsday scenarios now....Ford released a TSB that identifies the issue and provides the specific fix information.


SSM 48168 - 2017-2018 F-150, 2018-2019 Expedition/Navigator - 3.5L EcoBoost - Ticking/Tapping Or Rattle Type Noise On Start Up After A Cold Soak
Some 2017-2018 F-150 vehicles built on or before 10-Jul-2018 and 2018-2019 Expedition/Navigator vehicles built on or before 8-Apr-2019 equipped with a 3.5L EcoBoost engine may exhibit a ticking, tapping, or rattle type noise from the top front cover area of the engine that last 2-5 seconds on initial start-up after a cold soak. This may be due to a worn variable cam timing (VCT) unit. A TSB is expected to be published 4th quarter of 2019. In the interim, replace all 4 VCT units and update the powertrain control module (PCM) calibration. Do not replace timing chains, tensioners, guides or other timing related components unless inspection clearly identifies a concern. Refer to the Workshop Manual (WSM), Section 303-01. Claim the labor required to replace VCTs using published labor operations and PCM programming using M-time. Monitor OASIS for updates.

for what its worth, the way I read that is the "do not replace...." is specific to any repairs being conducted ahead of the TSB release... That would leave me to believe they could likely be included in the final TSB repairs if ford determines it is required.

Just speculation of course. We'll know more when the TSB hits the streets.
 

smurfslayer

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You actually don’t want to replace a relatively new timing chain with a new timing chain unless it’s stretched out of spec. Most of the chain ‘stretch’ occurs when the chain is new and can be disproportionate to the overall stretch over the life of the chain. In other words, the chain is going to stretch more in the first few thousand miles than it will over the rest of the life of the chain.

If you have a vehicle with a timing chain that is in spec, replacing it is not needed, the chain will actually wear in a more predictable and linear progression than if you install a new one. But, if you’ve got a chain that is marginal or, has excessive stretch, you replace all the related components - sprockets, guides, chains because if you put a new chain on an abnormally worn sprocket, you end up with a chain and sprockets that wear abnormally fast. These things stretch and wear very similar to motorcycle drive chains.
 

SKS

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Cam phasers are acting up on my rig, dropped it off this week. Curious to see what they replace.
 

SKS

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Picked up my rig this morning. The dealer had it for over a month. This is what they replaced.

IMG_20191114_102957.jpg
 

adllewis42

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Sorry you had to go through this but thanks for sharing. What year was yours? And do you know the build date?
 
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