Truck seems to want to turn off with the a/c on?

When I turn on my a/c on my '05 tacoma 4.0 it seems to want to turn off, the revs go up and down pretty bad. I had all of the a/c system replaced 2 yrs ago and it's not doing any of the symptoms like before. Has anybody had this happen to them before and if so what was the solution. Every bit of advice helps.

 

When was the last tune up ? plugs , fuel filter , air filter , idle air control motor and throttle body cleaning ? Thats where I would be looking first .
Do a search with the stuff I listed and you should get some solid answers

 

^this

 

clean throttle body.

do you have an intake?

 

Does the A/C cycle? does the compressor turn on and off or does it stay on? It might be a high pressure switch issue. The engine could be fighting unusual resistance from your compressor.

 

I got a k&n cold air intake, was un aware that my truck had a external fuel filter haven't cleaned the throttle body but I will check it out tonight. At the same time will check to see if the compressor cycles or not.

 

Thank you all again for the quick replys,

 

If it is the high pressure switch, what are the symptoms?

 

You might have put too much oil on the K&N and therefore the throttle body may need a good cleaning. Super easy, look it up on youtube

 

It doesn't have an external fuel filter. It's part of the fuel pump in the tank.

 

Clean the MAF sensor while doing the throttle body.

 

Well just an update, the issue with my truck was a failed compressor. According to the mechanic it was locking up and needed to be replaced along with the rest of the ac system for proper warranty. Hopefully I should get it by the end of today, I'll let you all know the outcome.

 

hopefully that didnt cost you too much!

 

$265 for labor but replaced the entire ac system again, seemed to have taken care of the problem, couldn't get a clear answer on why the compressor had locked up though, oh well just happy that I got my truck back and this time it didn't cost me $900 like the very first time. Again thanks to everybody that gave their input, really appreciate it.