Does S650 have cylinder deactivation?

[MikeyV]

Skip shift is a system in manual transmissions where the vehicle makes you skip 2nd and go from 1st to 3rd under light / medium loads. I know some performance GM cars had it but wasn't sure if the Mustang ever had it.

It was 1st to 4th! My buddy's '95 TA had that - so lame. He tuned it and it took that "feature" away.

The Truck Coyote has a different firing order (cleveland), a different (belt drive) oil pump set up, and hardware in the heads for cylinder de-activation.

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[Winnie the Ford 1638]

Why does cylinder deactivation lead to decreased life? In my head it might do the opposite

Having just lost a 2009 Honda Accord 3.2L V6 EXL to cylinder deactivation issues, let me explain as it was explained to me when I had to get the same cylinder serviced for a 2nd time (P303 code) with my regular mechanic:

The technology that shuts down cylinders aren't always the best. The systems can end up not being smart enough to know to shut down a cylinder AFTER fully cycling the piston and will shut down in mid stroke or pre-stroke, even, leaving a full cylinder of gas left over. That gas is supposed to drain but if you go into a cylinder shutdown and then immediately deactivate it (step on the gas pedal) that undrained gas becomes a strain on the cylinder which will eventually lead to total failure. In the Honda, this is a known problem (I bought my car brand new in 2009 and had it for 16 years before the problem started) and mechanics even knew the pattern of cylinders that go bad based on how they shut down in order by the computer.

To fix my Accord, 12K to rebore 3 cylinders and replace the entire piston. Stay away from cylinder deactivation if possible.

Good news, i was able to trade that in and get my 2025 GT Premium convertible 60th Anniversary edition that is my "dream car" I wanted since I was a kid.

 

[LouG]

Having just lost a 2009 Honda Accord 3.2L V6 EXL to cylinder deactivation issues, let me explain as it was explained to me when I had to get the same cylinder serviced for a 2nd time (P303 code) with my regular mechanic:

The technology that shuts down cylinders aren't always the best. The systems can end up not being smart enough to know to shut down a cylinder AFTER fully cycling the piston and will shut down in mid stroke or pre-stroke, even, leaving a full cylinder of gas left over. That gas is supposed to drain but if you go into a cylinder shutdown and then immediately deactivate it (step on the gas pedal) that undrained gas becomes a strain on the cylinder which will eventually lead to total failure. In the Honda, this is a known problem (I bought my car brand new in 2009 and had it for 16 years before the problem started) and mechanics even knew the pattern of cylinders that go bad based on how they shut down in order by the computer.

To fix my Accord, 12K to rebore 3 cylinders and replace the entire piston. Stay away from cylinder deactivation if possible.

Good news, i was able to trade that in and get my 2025 GT Premium convertible 60th Anniversary edition that is my "dream car" I wanted since I was a kid.

You don't actually have liquid fuel in the cylinder, it's vapourised fuel and air. The only way I know for fuel to accumulate as a liquid in an injected engine is a continual misfire for a period of time. This causes plug fouling, among other things.
Carbed engines are another story.

 

[DINOSOAR21]

So, for clarity, I am seeing that the Mustang GT engine may or may not have the cylinder deactivation (sources vary), and it is a working system in that Gen IV Coyote for at least F150s. I am seeing sources saying the DH does not, but not in a lot of places.

My big question is, while the system is "omitted," are those components that make up the cylinder deactivation for F150s, Mustang GTs, etc...not actually inside the DH engine valvetrain?? I could see them using Gen III heads and a different oil pump since the DH internals are different too. Or, does Ford just deactivate the deactivation system in the DH?. Am also curious of the Kevlar belts are present driving the oil pump...something easily verifiable. I hear this may be related to the cylinder deactivation system since that system runs on oil pressure.

I think DH owners would see the difference atop their heads.

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