New TSB issued for 2020 Mustang 5.0L Built September 1 - December 1, 2020

[bankyf]

That makes sense because if its a problem across all mustangs within the date range, it shouldn't matter if you are tuned or not.

Yah you do. This isn't a warranty claim from you, this is a TSB through a manufacturing defect from the manufacturer.

It’s not a problem across all within the date range, only some per the bulletin. If you are tuned, and under warranty, the burden of proof of what has caused the failure will ultimately fall on you. It could easily cost you more in legal fees to get this covered than the value of the repair itself. Again, this will be Ford’s stance. Your results at your dealership may be different, but don’t feel all warm and fuzzy about the situation because some guy on the internet says you will be okay. Ford knows first hand from the F150 that a calibration change can make this problem worse(I’m not implying that your typical custom tune will).

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[CJJon]

Does anyone have an official reference to this from Ford? So far all I there is a blurry screen shot and a quote from a video or something. I searched online, but had no luck.

 

[velocity550]

It’s not a problem across all within the date range, only some per the bulletin. If you are tuned, and under warranty, the burden of proof of what has caused the failure will ultimately fall on you. It could easily cost you more in legal fees to get this covered than the value of the repair itself.

All or some. A problem is a problem period.

 

[bankyf]

Does anyone have an official reference to this from Ford? So far all I there is a blurry screen shot and a quote from a video or something. I searched online, but had no luck.

It's highly unlikely you will see it anytime soon, if at all because it's an SSM and only affects a small number of vehicles. If it's worth $22 dollars to you, you can go here and have access to all of them for 72 hours:

https://www.motorcraftservice.com/Purchase/ViewProduct

You won't find any more from Ford other than a much less blurry version of the screenshot I posted though.

 

[olaosunt]

I am guessing Gen 3 heads are about to become hard to get ?

 

[WildHorse]

the burden of proof of what has caused the failure

That was determined already by Fords TSB.

 

[andrewtac]

11Nov20, pushing 15+ pounds now; good thing I started collecting parts for a build.

 

[ChitownStang]

Thanks for the info on how to check engine build date, I'll check mine at lunch today. Picked up my Mach in March 2021. Everything running great until last night. After filling u p the gas tank (didn't turn off car) I took off and was driving aggressively, saw the engine idiot light come on. Stayed on for 5 mon and went off. Nothing felt different
I checked ford pass and it said misfire. Could this be related the the TSB or maybe just something with gas?
Also, whats the easiest way to hook my Windows laptop or iphone to ECU to read codes?
Thanks

 

[emcmtony]

Dodged this one. My build date was 8/18/2020!

 

[ChitownStang]

Just looked, January 19 2021
Phew!

 

[UTAR15]

October 20th, 2020. Great...

 

[Hugh G. Rection]

I had a similar issue way back when testing stage 3 comp cams for a gEN 1 coyote. The base cap kept rubbing the cylinder head and making a squeaking noise, took months to figure out. Ended up needed a new head no metal shaving or anything but a pain in the butt and it sent cam timing off alot

 

[njweatherman]

I had a similar issue way back when testing stage 3 comp cams for a gEN 1 coyote. The base cap kept rubbing the cylinder head and making a squeaking noise, took months to figure out. Ended up needed a new head no metal shaving or anything but a pain in the butt and it sent cam timing off alot

How long did it take to replace the cylinder head?

 

[ice445]

How long did it take to replace the cylinder head?

It takes forever

 

[Bullitt in the Burgh]

Think again.

Actually... I can tell you from my own experience that I had to have major electronic work done to my Escape for a known issue, for which Ford had issued a TSB. But since it was a TSB and not a recall, I had to pay $2,400 to get it repaired.

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