i live in phoenix and my ac is not working. it just stopped yesterday. my condenser fan is not running anymore and the idle does not go up when i turn it on anymore. i kind of need it....becuase i live AZ... it is already starting to get hot. i have checked all the relays and ffuses, everything is good. no engine overheat, nothing else is wrong, but the AC. let me know what you guys think.

-andy

 

ac pump clutch maybe, im not to sure thow. what year truck? do u have.

 

Start with the basics: check the fuses for your AC, fan blower, and condensor fan.

If these are OK, start your engine and turn on the AC. Look under the hood to see if the AC compressor clutch is turning.

The clutch has two parts: The back part with the drive belts always turns when the engine is running. The front part is what engages when you switch on the AC. This makes the compressor turn and the AC system function. The AC system has a pressure switch that will not allow the compressor clutch to engage if the system refrigerant pressure is too low. This protects the compressor from damage.

If if both parts are not turning, your AC system could be low on refrigerant. You will need to have it checked for leaks, repaired if any are found, then evacuated and recharged with refrigerant.

110 degrees is just around the corner! Now is the time to get your system working. Hope this helps.

 

well like i said all the fuses and everything is alright, all of the continuities seem to be where they should be. the truck is a 1992. i am not sure cause my dad just spent like $3000 on a overhaul on my truck including the A/C and now it stops working. sucks. all the fluids are fine. i checked them this morning, no bubbles in the little sight glass. i jsut replaced the belts and the water pump. like not more than a month ago, could that be the problem?

 

no ac in arizona? OUCH man i feel your pain... its startin to heat up a little here in vegas... but i made it through last year with no a/c(my truck dont have it). wait, it does have it... its 260 air conditioning... 2 windows down at 60mph. hey it does give me the right of way in the summer tohugh... check your fuses

 

Its probably the compressor clutch?

 

Sorry, I missed where you said you checked the fuses! Doubt the belt is the problem, unless it is missing! You still need to check the AC clutch/pulley operation....a clear sight glass can mean 2 things: the system is fully charged, or the system is completely empty. If it is empty the clutch will not be engaged and the compressor won't operate.

Just because the AC was recently worked on doesn't mean the system didn't develop a leak at a seal or fitting and all the refrigerant escaped! Crappy AC techs are everywhere! Check out the clutch operation: turn the AC off and on several times with the engine running and watch the clutch.

 

Who needs AC?

 

im in the exact same boat, I should start checking these things. My ac light comes on at the switch, but nothing happens. No idle up, no cold air
Idle goes down with the heater on ( temp selection makes no difference).

 

(Doors off + top off) x big gulp = a/c.

 

i find that if i open my window, and my slider in the right spot i get a cool breese right in the side of the head, open it more, the face, more the other side of the head. nice, but i have working ac!!!! , needs a charge thow. last year the hottest day in the san fernando valley was 118

 

I usually use the "natural" AC - Front windows down, e-cab windows open, rear slider open, sunroof open/removed. Unfortunatly these don't work well when you are stuck in 5km/h traffic

 

Does the a/c light on the button come on when you push it? Check for power at the compressor clutch you should have 12 volts. If you dont have voltage find the pressure switch and jump the terminals, if you get voltage then the system is probably low on freon.

 

It's only February......can't go windows down for a while?

But I do agree, it's good to have the A/C ready for when you do need it. I guess when they say that it's a dry heat, they just say that to lure people out there, so they will incinerate.

Check to see if you have plenty of refrigerant.

 

Yours is better than mine. My '87 has 240 air conditioning......

 

thanks guys i will be checking the compressor clutch and voltage and what not after i get out of school. the windows will work for a little while longer. i jsut need to get it working so that the ONE day that it does decide to be 120 degrees then i will have it... thanks for all the input it is really appreciated. as for now the 2 window and rear slider work i will post again after i see wat da prob is... i am thinking the compressor clutch might be it. does it have anyhting to do with the shifting clutch? cause mine is goin out. need a new one of those too. $$$$$ let me know thanks

 

The clutch on the AC compressor only engages or disengages the compressor and nothing else. It is actually an electro-magnetic clutch that is activated when you switch on the AC. This is why you need to make sure you are getting 12 volts to the AC clutch (wires are visable on the compressor near the clutch part that is turned by the belt.) Even if you have electrical power to the clutch, it will not function if the system refrigerant pressure is too low.

The AC compressor clutch has nothing to do with the clutch that connects your engine to your transmission.

 

Thats what I thought it was...