AC Just Died!

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Old 27 Jun 2006, 01:43 pm   #1 (permalink)
guvner@gmail.com
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Default AC Just Died!

I have a 2003 Camry XLE with 65K miles. The AC has always been ice
cold even in the Florida summer weather. It was still ice cold
yesterday when all of a sudden the AC light on the dash started
flashing and it started blowing warm air. Shutting the system off and
turning it back on only keeps the light green for a few moments and
then it starts flashing again.

I checked the low side pressure with a gauge, because I was sure that
the problem wasn't low freon, (it's always been ice cold right up until
the moment it failed). The pressure is showing as very high, almost
two times higher than recommended, (which I believe is 60psi or so??).

What could be the cause of this? I've found other suspected causes of
the flashing light when I did a Google search, but none mention the
high freon pressure symptom that I'm seeing. I'm the original owner,
and I've never added freon or oil to the system.

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Old 27 Jun 2006, 02:46 pm   #2 (permalink)
qslim
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Default Re: AC Just Died!

A reading of 60psi when the system is off is a bit on the low side,
actually. When the compressor is running, the low side should be 20 - 30
or so. When the compressor shuts off, both sides equalize and you usuallly
see total system pressure around 90 - 100psi.
I would bet your problem is low refrigerant. I would recommend having
the system evacuated and vacuumed, and a leak check performed. Modern AC
machines will display the weight of refrigerant removed, so at that point
you will be able to determine if low regrigerant is indeed the cause.

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Old 27 Jun 2006, 04:13 pm   #3 (permalink)
mack
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Default Re: AC Just Died!


<guvner@gmail.com> wrote in message
news:1151433804.829889.108610@u72g2000cwu.googlegr oups.com...
>>

> What could be the cause of this? I've found other suspected causes of
> the flashing light when I did a Google search, but none mention the
> high freon pressure symptom that I'm seeing. I'm the original owner,
> and I've never added freon or oil to the system.
>

sorry I can't help you with a diagnosis, but as to the "Freon" I hope you're
just using the old name
and realize that the R-134 in your system is NOT Freon, and is incompatible
with Freon.

Unless you know your way around A/C systems, I'd advise going to an air
conditioning specialist....
who'd probably NOT be at the Toyota dealer's shop.


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