Is my A/C Working correctly?

Maybe I hadn't noticed before, but I feel my A/C is not working right.

I turn on the truck, it blows cold.

Then a cadence sets in. Every 10 seconds or so, I can smell/feel the air getting slightly warmer, then begins to cool again for 10 seconds.

Is this just the A/C Compressor cycling on/off?

Is it supposed to do that?

Only comparison I have is to my 2004 Cavalier, the compressor is engaged 100%, never cycles off/blows slightly warmer air as far as I can tell.

 

You are right. You are low on refrigerant. The compressor is "short cycling". Find the leak, repair and recharge the system.

 

Crap. Was hoping I was wrong. It's been fine since I bought the truck last June.

 

Don't beat yourself up. Ac is a weak link when it comes to Toyota reliability.

 

All cycling A/C systems do this to some extent. Some are worse than others.We have three toyotas,2010 4runner,2006 4runner and 2007 Tundra.You don't notice the 2010 4runner as much. The 2006 4 runner and 2007 Tundra you can definitely feel the air change.The sensor on the evaporator coil determines when the compressor cuts off and on. It may be letting it get a little to warm before it cuts it back on.If the vents are turned where the air blows directly on you then you will notice it more.