Air condition at idle

I was sitting in my truck on my lunch break with the air conditioning on (it was hot as hell) My truck was idling and I noticed the engine was making a weird "revving" sound and then clicking off. It would rev and then rev off. I think it was because of the air conditioning.

Anyone else notice this?

Thanks

 

Normal characteristic (not just of Tacomas but a lot of other new vehicles). It revs so low (conserving fuel and emissions) at idle that it needs to rev up intermittently to power the A/C compressor. It can be annoying but it is normal and expected behavior.

 

Normal AC compressor activity. My 04 does it.

 

my 2000 jeep XJ did it too whenever the compressor kicked in. nothing new.

 

Sounds normal to me

 

JK

 

Every modern car with A/C that I have owned did that.

 

when the magnetic clutch on the compressor grabs, the engine has to rev up to account for the extra load.

 

It happens literally ever 30 seconds. Rev up and down rev up and down.. your right I assumed it was normal but I happens every 30 seconds so I thought it was more frequent then normal

 

It's a big complaint I have with it. I have a job where I'm frequently in my truck and parked. Need the a/c on in FL heat, kicks on and off constantly.

Very annoying but as others (abd Toyota) said its normal. My old '06 G35 never did it.

 

My Frontier has an electric fan for the AC condenser. It kicks on occasionally when it's hot out and the truck isn't moving. Not sure if Toyota added one to the 3rd gen (my 2nd gen didn't have one).

 

I don't care if mine revs or not, it's the best damn AC I've ever had in a vechile, why it will chill my whiskey to ice cold in just a few blocks without ice in the glass!

 

Mine does it too. It's really annoying when you're trying to take a nap during lunch and you can feel the increase in revs and hear the noise.

 

I've had cars increase revs when the AC kicked on but nothing like this stop start stop start jerky revving the Tacoma does.

 

Even my RAV4 hybrid rental does it.

 

Haha I feel your pain. Initially I thought it was just my truck but I'm glad it's everyone!

 

Could be worse my 63 nova had "Air Conditioning" and when you turned it on at idle the engine would shut off...

 

You can only turn it on at WOT! lol