[Tessa]

Oh shit, my bad. I should have read a little more before I assumed that Tessa was a chick. How embarrassing!😚
TESSA THE DUDE EVERYONE!

HAHA!
Tessa is one of my mini-dachshund's names!
She's a real growler and runs flat out all the time so I used her name here in this high-octane forum.

 

[Tessa]

HAHA!
Tessa is one of my mini-dachshund's names!
She's a real growler and runs flat out all the time so I used her name here in this high-octane forum.

My baby...

 

[LyleBrewer]

Back to the original question, To me, it sounds like a Full ( or near Full Throttle) AC Compressor Cutout. I have not noticed this on my RT but I rarely hit full Throttle and never until the engine is fully warmed up, so the car would already be cooled down and less noticeable. This would only be noticeable in the summertime when you are trying cool down a hot car. I have no inside knowledge of the workings of the Computer Controls in Durango. Perhaps there is a Chrysler Controls Tech that can confirm this.

 

[Tin Foil Hat]

This has never been an issue with RTs and mine certainly doesn't do it.

 

[Tessa]

My R/T never did the heat blast thing like my new SRT does but, the AC compressor clutch cutoff is pretty standard on all vehicles.

Again, the SRT only does the heat blast at initial full throttle acceleration. As soon as you release full pedal pressure, the heat stops, probably because the heater core valve closes.

I think that type of valve action is controlled by intake manifold vacuum levels rather than electrically or electronically?

 

[Buck99rog]

My R/T never did the heat blast thing like my new SRT does but, the AC compressor clutch cutoff is pretty standard on all vehicles.

Again, the SRT only does the heat blast at initial full throttle acceleration. As soon as you release full pedal pressure, the heat stops, probably because the heater core valve closes.

I think that type of valve action is controlled by intake manifold vacuum levels rather than electrically or electronically?

A heater core valve closes off coolant from running thru the heater core. What you are calling the heater core valve is actually the temperature control blend door. Which isn't actuated by vacuum, but electrically driven actuators and gears. Even the recirculation door is driven electrically now.