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Ford F150 3.5L Ecoboost Rattle Upon Start Up- Timing Chain Stretch Issues TSB

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776K views 1.4K replies 231 participants last post by  snakebitten  
#1 ·
Ok so some may know about this some may not but it is something that is coming on strong with many showings at dealerships across America. So as most know it is timing chains that are prematurely stretching causing this startup noise. The news is that there is updated parts out there to address this and Ford now has a TSB on this issue formally admitting to it being a common problem. I go over it all in this video. There is also a link to just how it sounds in the description of the video on youtube. Hopefully more dealers will be willing to dive into the engine with some guidance from Ford now.
 
#445 ·
I honestly am starting to think some of these dealership service departments are doing something wrong when they perform the work. Perhaps they aren't cleaning something properly, or they are overlooking something that should be cleaned. Something doesn't seem right. If repaired properly the condition should not come back so quickly
 
#446 ·
From what I gather I'm the only one that's had a problem with the latest TSB. According to my receipt they replaced everything that the latest TSB shows. I'm thinking either part failure or installer error. The service advisor told me their best engine guy did my repair, so I'm not sure what to think. Even another guy at the desk bragged. I'm having the same problem as before the TSB, but under different conditions, and it's not as loud yet. Should I open up a case with Ford Corporate?

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#449 ·
The primary timing chain tensioner has to be replaced. It is an updated part and goes hand in hand with the primary tensioner arm. When one is changed and updated, so is the other.

Does this TSB call for changing secondary timing chains, secondary tensioners and guides, and exhaust cam phasers with 4 new VCT solenoids?

Those exhaust phasers should 100% be changed regardless what ford says. While it's open tell them to change them and pay them the money to. Same thing with the VCT solenoids. Those solenoids are what controls the oil flow. If they are not replaced and are at all blocking any oil flow, and not working at 100%, you will always have the problem with your phasers.
 
#450 ·
Only the primary chain and parts were replaced. I dont know if they did the tensioner. I would have to look later and see. If you go back on a few of my posts you can see the parts that were replaced on my receipt.

None of the secondary chain or parts were replaced. If I realized the first time they needed to be replaced I would've had them do it. Maybe they'll figure out that all those parts need to be replaced too.


TSB Link:

http://ford.oemdtc.com/1267/ticking...tapping-or-rattle-type-noise-on-initial-start-up-2011-2015-ford-f-150#more-1267


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#457 ·
Ya mine has been 1 and a half years almost and no issues since.
 
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#458 ·
A guy who I work with had the TSB done. He says he still gets the rattle. But they won't do anything unless the P0016 code comes back.

There is a guy on f150forum that has had the rattle for a good chunk of miles and never has an issue other than the rattle. His user name is maplelakeduckslayer. Read his posts.

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#459 ·
I drove home 13 miles from the dealership. I parked the truck for 24 hours. I cranked it up and heard the rattle. I never had the engine light come on and the dealer still did the TSB.

Before the repair the rattle was worse below 50F. And I would get it after the truck sat more than 2 days. Now I'm getting it with Temps above 50F and I'm getting it after the truck sits 12 - 24 hours. My symptoms are now opposite of what they were before the repair.

If they truly replaced all the parts in the TSB (receipt shows they did), then I'm thinking something else is causing the rattle, a faulty part was installed, or installer error.

I don't think they would lie about what was installed. I would think they would get in trouble for that.


I'll check out that guy's posts when I'm on a computer.

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#461 ·
The TSB does not address many of the possible problem areas that help cause the issue. They are replacing in theory the affected parts.

To repair everything properly, the added labor would be around an hour, and the parts about another $600 or so.

Replace This List

4 VCT solenoids
2 intake phasers
2 Exhaust phasers
1 primary timing chain
2 secondary timing chains
1 primary timing chain tensioner
1 left primary chain arm
1 right primary chain arm
1 left chain guide
1 right primary chain guide
2 secondary timing chain tensioner
2 secondary tensioner shoes
2 intake cam bolts
2 exhaust cam bolts
1 New idler pulley/coolant crossover
1 crank gear

Those are just timing parts that I am thinking of off the top of my head that i would change while I am in there. There are more but those are the key ones. Most notably are the 2 exhaust phasers, and the VCT solenoids without question. You can change every single internal engine part on this motor, and most fords, and if you have bad VCT solenoids and problems with oil flow it's game over.
 
#462 ·
The TSB does not address many of the possible problem areas that help cause the issue. They are replacing in theory the affected parts.

To repair everything properly, the added labor would be around an hour, and the parts about another $600 or so.

Replace This List

4 VCT solenoids
2 intake phasers
2 Exhaust phasers
1 primary timing chain
2 secondary timing chains
1 primary timing chain tensioner
1 left primary chain arm
1 right primary chain arm
1 left chain guide
1 right primary chain guide
2 secondary timing chain tensioner
2 secondary tensioner shoes
2 intake cam bolts
2 exhaust cam bolts
1 New idler pulley/coolant crossover
1 crank gear

Those are just timing parts that I am thinking of off the top of my head that i would change while I am in there. There are more but those are the key ones. Most notably are the 2 exhaust phasers, and the VCT solenoids without question. You can change every single internal engine part on this motor, and most fords, and if you have bad VCT solenoids and problems with oil flow it's game over.
View attachment 91633 View attachment 91649
Thank you for your post. That helps me understand everything a lot more. I'm pretty sure it's my pass side secondary chain that's rattling now. I'm gonna wait and see what the dealership says and then talk to them about replacing everything you listed.

Thank you for your help rbrown.

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#467 ·
Got mine back today new phasers timing chain and they also put plugs and a new water pump. Don't understand the water pump and I agreed to pay for the plugs. Where I got lucky is the extended warranty I bought....paid for itself in one trip. Going this weekend to try and trade it off but I actually want another one....is this an issue on 16's with the 3.5 also?
 
#468 ·
Shane make sure you get the oil changed asap with a new filter. It's not part of the tsb anymore.
 
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#470 ·
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#473 · (Edited)
So, I have 87k on my 2012 and after a couple months of going back and forth with multiple dealers a year ago I was finally able to get the phasers, chains, and everything replaced, life was good....Until this weekend, when it came back.... Has anyone seen it come back after having everything replaced once?? I've put about 20k miles on it since getting it all replaced and since I'm out of warranty now this time its on me...
 
#475 ·
I have the paperwork out in my truck so I will bring it back in after lunch and give the exacts, but off the top of my head, Both chains and tensioners, the first trip didn't fix the issue the second dealer did phasers. I will get the paperwork and list it all off.
 
#476 ·
I think you'll need it all replaced in one shot for it to get fixed, since if you had chain and tensioner replaced but with bad phasers, that chain and tensioner is done now even tho you got new phasers in. Those old phasers did enough damage to your chain.

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#481 ·
So random thought while I was looking up the parts, "Ford Actuator is a Genuine OEM Ford Part # AT4Z-6256-B and carries a Two Year Unlimited Mile Warranty backed by Ford." does this mean I have a case?? Parts failed again and I have all the paper work from when it was installed?!?!
 
#484 ·
Really? damn, so anything you pay for will be covered by a 2 year warranty but if it's ESP it's not. That sucks, so any work you do at the end of your ESP, your pretty much not covered if your ESP runs out week later. Nice.

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