Air Conditioning fan cuts out at 3500 RPM

[wburns]

Has anyone else experienced this. Just got the car.

Test 1

Turn on Air Conditioning
Turn on Re-circulation
Rev engine to 3500 RPM + (enter expressway quickly)
Air Conditioning shuts down
Re-circulation light stays on
reduce speed, engine less than 3k - 3.5k
Air conditioning ramps back up, Re-circulation stays on.

Test 2
Turn on Air conditioning
Turn off Re-circulation
Rev engine to 3500 RPM + (enter expressway quickly)
Air Conditioning shuts down???
Re-circulation stays off - no light
reduce speed, engine less than 3k - 3.5k
Re-circulation turns on, light turns on and you can hear AC ramp up.
Air conditioning is back up, Re-circulation stays on.​

 

[tod1d]

solution don't rev so high, its actually a safety feature to protect fan, been around for at least two decades
my last car, a 1991 Olds Eighty-Eight would do the same thing, found out the hard way once when I was speeding and it got very warm in the car until I slowed down

 

[1fastgtp]

welcome

 

[QUICKSILVER462]

There is a check valve that keeps the vacuum in the vacuum resivour when pressure on the engine side rises (heavy throttle), or there might be a vacuum leak on the resivour side of the system.

 

[Justintiime]

yup AC supposed to cut off at WOT isnt it?

 

[benner]

yup AC supposed to cut off at WOT isnt it?

Yep. Actually happens all the time for me with the stall. Get's rather annoying.

 

[BillBoost37]

FWIW that can be reprogrammed.

It's done that way to give you max power. Clearly if you are over 70% throttle, you are asking for everything it's got.