My air con has never gotten cold so i tried to see what was wrong
I was looking under the hood today and behind the a/c pump there was the a/c compressor wire that was not connected.So
i connected it up and started the car and turned air con on.
I could hear a clicking sound from the air con compressor but that was only the compressor clutch (i think it,s called that) stopping.
the problem is it stops every 2 seconds i,m sure it shouldn,t do
it that regular or should it.So i just disconnected the conection
again.
Any help please.
Jeff.

 

That connection needs to be on there. That connector is what turns the compressor on & off. The pressure switch tells the compressor to turn on & off. It trips the clutch to engadge when the pressure is below a point, and trips it to disengadge when the pressure is at it's peak.

With my experience being that the compressor keeps kicking on & off every two or so seconds sound like your low on freon.


Ron

 

Thanks Ronterry
I,ll reconnect it this afternoon.
Jeff.

 

Unhook it until you get some more freon. Kicking in and out all the time will wear out the clutch. Could also be a bad pressure switch.

 

where is the pressure switch and how could i check it.
Thanks for the reply,s.

 

No, better yet just don't use or turn on the AC till you leak test it, and fill with freon.

I'm assuming you have an R-12, and unless you have a 609 certification you can't buy it. This is best left to a professional.
Also the fact R-12 is down right costly(No longer in production-EPA ), they might convence you to switch to a blend, or a R-134a conversion.

The pressure switch is on the big silver canister deal near the firewall passenger side.
Normaly when filling it, you disconnect the pressure switch connector(NOT the compressor connector - That stays on forever), and ground the two contacts. This will make the clutch stay on while filling, and can also be tested for system pressure.

Ron
609 Certified

 

yeah i,ll do that
i,ll take it down tommorow and get leak test and refill done and see what happens then.
Thanks
Jeff

 

If they can switch you to a blend, that would be the best bet I believe. Blends like freeze-12, etc... are all very good, and don't require different hoses to be (((FULLY))) compatible with R-134a.
Usualy the only thing they need is a different pressure switch, and the cost of the blend per # is very low compared to R-12.
In fact some blends perform @ or greater then R-12, unlike R-134a which sucks on a hot day in stop and go traffic.

The only con with a blend is proper installation, but if done by a experienced pro, you'll have no problems with that.

Good Luck,

Ron

 

I,m not sure what gas is in there ive only had the car a few months and here in australia a few years ago the goverment made us change to the new type of gas.Is that the case in U.S.
Tomorrow when i go to the mechanics i will see what they say.Thanks Ron.



Jeff.