2017 ecoBOOM mustang why?

[Mustang_Jay]

And yes only use 91 octane

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[Monopoly]

Dayum that is some serious bad luck. I'd get another used engine and sell the car. She's got bad voodoo.

 

[BLU-PNY]

I was going to ask you why used engines, but looks like over 36k miles so no FPP warrany I assume. While there are online tales of ecoboom, there are a TON of tuned ecoboosts with much more extensive mods than you that run reliably.

There has got to be something else going on with your car....or.....something very funky about your particular tune. Did you purchase the tune new and have it installed? Do you have a copy of stock tune that you can reinstall?

 

[tcman54]

My 2016 Ecoboost has been great from the day I took it home, almost 40,000 miles and the engine seems better than ever, It really seems faster than the 310hp rating.

I would say drop the tune and or just bad luck on your part.

TC

 

[Vicr]

A blown head gasket is NOT a blown motor. The 2.3's have the head bolted to the block and under heavy load the head can flex casing damage to the gasket. There are a lot of tuned EB enthusiasts who remove the head bolts and install studs which don't allow the head to flex. So getting back on subject what happened to your first motor after the head gasket blew.

 

[Mustang_Jay]

A blown head gasket is NOT a blown motor. The 2.3's have the head bolted to the block and under heavy load the head can flex casing damage to the gasket. There are a lot of tuned EB enthusiasts who remove the head bolts and install studs which don't allow the head to flex. So getting back on subject what happened to your first motor after the head gasket blew.

I have warranty through silverrock they replaced the blown head gasket engine with the 1st engine that blew up then replaced that engine with 2nd engine that blew. Now the 2nd engine had no check engine light or odd sounds at the time it decides to blow on me while driving I'm gonna have to just keep FB tune off this next engine and drive like a grandma until I can sell it

 

[Mustang_Jay]

I have warranty through silverrock they replaced the blown head gasket engine with the 1st engine that blew up then replaced that engine with 2nd engine that blew. Now the 2nd engine had no check engine light or odd sounds at the time it decides to blow on me while driving I'm gonna have to just keep FB tune off this next engine and drive like a grandma until I can sell it

I mean FP tune

 

[Blue Moon]

Do you lug the engine? What rpm do you shift at?

 

[TunedN]

There are only a few possibilities I can think of. You're using the wrong octane fuel. You have a dishonest mechanic who thinks warranty = endless income. One of your sensors is bad and making your tune too hot. Your driving style is abusive. IDK

I've done all my own upgrades since every car I take to a mechanic ends up having another problem within months or the maintenance just isn't up to par. Since I've started working on my own vehicles, parts RARELY fail.

I have far more mods and never had any issues with my EcoBoost, ​

other than being too lazy to replace the pilot bearing and now kicking myself. I think the throwout bearing has a poor design due to no bleeder valve. Other than that, no complaints. I haven't dyno'd yet since I'm not done with mods for a pro tune, buy to me these cars feel weak. If you want pep, mod an ecoboost; if you want power, mod a GT. For a street car I'm happy with my 400ish hp and better MPG than a GT.

 

[TorqueMan]

You're replacing a blown engine with a used engine of unknown provenance. You have no idea how those other engines were treated. Were they previously tuned? Used for racing? Where they rebuilt, or installed in your car as is? Presumably, they were taken out of totaled wrecks; were they damaged in the accident? Who knows?

The bottom line is there are far, far too many variables in your particular situation to allow any useful insights into why your engines keep failing.

 

[Sigma6]

How much more would a 5.0 engine cost you (if that’s allowed to pay the difference). You’re gonna have diminished value trading it in having gone through 2 engines previously.

 

[ORRadtech]

How much more would a 5.0 engine cost you (if that’s allowed to pay the difference). You’re gonna have diminished value trading it in having gone through 2 engines previously.

Unfortunately, swapping in a 5.0 is just not that simple. Required at a minimum would be a new exhaust, new wiring harness and a new ECM. If the OP wants a 5.0 car the best bet is going to be get this engine replaced and sell it for a GT. The diminished value hit would be less than the increased cost of the engine, parts and labor for a swap.
Were it mine I'd absolutely be looking at getting rid of that demon car.

 

[Maggneto]

Out if curiosity, do you always get gas from the same gas station or vendor? Did you recently fill up with gas just prior to any of the failures?

 

[Maggneto]

A blown head gasket is not a "blown engine" and as far as I know does not require engine replacement? Why did they replace the 1st engine instead of replacing the head gasket?


1st engine blown head gasket
2nd engine (used 55k miles) blew up with 300 miles on it

 

[Cardude99]

Maybe go back to the stock tune?

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