AC quit 2X in 1 Yr

[houndman]

any thing on bad connectors on the AC wiring? It shut off last night
and wouldn't come back on. It quit once last summer. Then it started
again after an hr or so. Going to go out and wiggle some wires.

VF

 

[houndman]

any thing on bad connectors on the AC wiring? It shut off last night
and wouldn't come back on. It quit once last summer. Then it started
again after an hr or so. Going to go out and wiggle some wires.

VF

It's working again. Wasnt at first. Checked the fuse, wiggled wires,
turned the compressor, and still nothing, than it started. Cycled a
few times early on, so thought low freon, but then it ran for 20 min
without stopping. FUN...

 

[houndman]

any thing on bad connectors on the AC wiring? It shut off last night
and wouldn't come back on. It quit once last summer. Then it started
again after an hr or so. Going to go out and wiggle some wires.

VF

Now it's working. Checked the fuse, wiggled wires, turned the
compressor, It didn't start right away, and then did. Cycled a few
times at first, so figured low freon, but then it ran for 20min.

 

[Stewart DIBBS]

... so figured low freon, but then it ran for 20min.

There's a dual pressure switch in AC systems that disables the compressor if
the pressure gets too high or too low. Most likely your system is low and
there's a tiny leak somewhere. Quick and dirty test: find the high pressure
valve (probably near the dryer unit) and press the valve QUICKLY. You should
hear a loud high pressure SHHHH sound if the pressure is about right. If you
get a soft SSSSSS sound the pressure is low.

Fix: Get the system repressurised. Any AC shop can check the pressure with
simple equipment. Try to resist the demands that the system be first checked
over at exhorbitant cost unless the pressure is really low. Just be aware
that refrigerant just does not leak away without a reason, most commonly
corrosion pin hole(s) in the front condensor. Less common is compressor seal
failure (these either work or fail completely). On older cars some hoses get
porous and the refrigerant leaks out through the hose wall.

Might also just be the compressor clutch is not engaging well.

Unless your car is pre 1994, it uses R143a refrigerant, not R12a, commonly
know as freon.

SD

 

[houndman]

There's a dual pressure switch in AC systems that disables the compressor if
the pressure gets too high or too low. Most likely your system is low and
there's a tiny leak somewhere. Quick and dirty test: find the high pressure
valve (probably near the dryer unit) and press the valve QUICKLY. You should
hear a loud high pressure SHHHH sound if the pressure is about right. If you
get a soft SSSSSS sound the pressure is low.

Fix: Get the system repressurised. Any AC shop can check the pressure with
simple equipment. Try to resist the demands that the system be first checked
over at exhorbitant cost unless the pressure is really low. Just be aware
that refrigerant just does not leak away without a reason, most commonly
corrosion pin hole(s) in the front condensor. Less common is compressor seal
failure (these either work or fail completely). On older cars some hoses get
porous and the refrigerant leaks out through the hose wall.

Might also just be the compressor clutch is not engaging well.

Unless your car is pre 1994, it uses R143a refrigerant, not R12a, commonly
know as freon.

SD

Thought I mentioned that the car is an 07' Impreza, but guess I
didn't. I'm thinking the way it has acted the relay might be acting
up, since it shut off once last summer, and once this year, so far. I
was wondering if there was something that acted up often on new Subes,
that I could check. I know a bit about AC's, and how they work, but
don't really know how to fix them, and no vacuum pump.))

Going to get Hot this weekend, and I had a trip planned. I have an
older car, and the Sube is just for trips, and to have a working AC.

VF

 

[Carl 1 Lucky Texan]

Thought I mentioned that the car is an 07' Impreza, but guess I
didn't. I'm thinking the way it has acted the relay might be acting
up, since it shut off once last summer, and once this year, so far. I
was wondering if there was something that acted up often on new Subes,
that I could check. I know a bit about AC's, and how they work, but
don't really know how to fix them, and no vacuum pump.))

Going to get Hot this weekend, and I had a trip planned. I have an
older car, and the Sube is just for trips, and to have a working AC.

VF

Our 03 OBW had both the intake and discharge hoses replaced in it's
first 18 months or so - under warranty.
Maybe FHI had a bad batch of hoses delivered?

Carl

 

[Carl 1 Lucky Texan]

Thought I mentioned that the car is an 07' Impreza, but guess I
didn't. I'm thinking the way it has acted the relay might be acting
up, since it shut off once last summer, and once this year, so far. I
was wondering if there was something that acted up often on new Subes,
that I could check. I know a bit about AC's, and how they work, but
don't really know how to fix them, and no vacuum pump.))

Going to get Hot this weekend, and I had a trip planned. I have an
older car, and the Sube is just for trips, and to have a working AC.

VF

Oh - as for checking something youself, make sure the electric fans are
coming on. Engaging the a/c compressor should start up a fan, even on a
cold engine.

just a possibility

Carl

 

[houndman]

Oh - as for checking something youself, make sure the electric fans are
coming on. Engaging the a/c compressor should start up a fan, even on a
cold engine.

just a possibility

Carl

I'm wondering, that with a push button AC switch, if the fans or
anything would be energized, if the switch didn't light up?

Have a 100 deg heat wave starting tomorrow, so hoping it works. Since
it Has run again, at a later time, I'm thinking it is something
simple.

VF