Help! Ecoboost engine bay CLICK after hard rev or acceleration

[rcryniak]

Hey everyone... started noticing a possible issue on my 2016 Ecoboost Mustang the past few weeks. If I accelerate quickly, I hear an audible (sometimes loud) "click" noise. So today, I had my wife rev the engine with me in the engine bay, and heard it clearly a few seconds after each rev. I threw it up on YouTube hoping to get some thoughts as to what this click might be? Sounds like some type of switch.

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[ronemca]

* I am not a mechanic *

My guess is the AC clutch. It auto-disengages @ high revs...so it seems logical that it would re-engage when the revs drop.

Not sinister, IMO, but it is an interesting question!

 

[16Fastback]

* I am not a mechanic *

My guess is the AC clutch. It auto-disengages @ high revs...so it seems logical that it would re-engage when the revs drop.

Not sinister, IMO, but it is an interesting question!

Sounds like the ac/heater clutch to me also.

 

[Chef jpd]

I would agree with the above. Try and turn off your climate control and do it again.

 

[rcryniak]

I would agree with the above. Try and turn off your climate control and do it again.

Thanks for replying everyone. When we were testing for that noise, the climate control was in the off position, as was the radio, just to make sure we could hear it. Now, if the AC/heater clutch works regardless because the car's coolant runs through the heater core, or some such thing, then I won't worry about it. (No codes either, btw.)

However, if having the climate control OFF entirely rules out the ac/heater clutch, then what are some other possibilities?

Thanks again!

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