Intermittant A/C Air Conditioning problem
#1
Intermittant A/C Air Conditioning problem
Earlier this year I replaced the AC Pressure sensor located above the
condenser, there was no Schrader valve located under the sensor,
so I took it to an AC shop which vacuumed the system and refilled with
the correct amount of Freon.
Since then the AC has been working great until last week;
my air conditioning blows warm air after I start driving,
I have to turn the AC on and off once or twice before it starts
blowing cold again. After it blows cold it gets very very cold though.
Any suggestions what could be the problem?
I do have a working JLR SDS but limited knowledge how to use it.
Thanks
condenser, there was no Schrader valve located under the sensor,
so I took it to an AC shop which vacuumed the system and refilled with
the correct amount of Freon.
Since then the AC has been working great until last week;
my air conditioning blows warm air after I start driving,
I have to turn the AC on and off once or twice before it starts
blowing cold again. After it blows cold it gets very very cold though.
Any suggestions what could be the problem?
I do have a working JLR SDS but limited knowledge how to use it.
Thanks
#3
The OP said the system was evacuated. If done properly that would remove the moisture. Since it operated normally for awhile, this seems to be the case. The system is pressurized and will not pick up moisture from the outside lower pressure environment. So the expansion valve should not be freezing.
You need to first determine if the compressor is turned on when the hot air is blowing.
Last edited by davchr; 09-30-2017 at 05:53 PM.
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Thanks for the replies,
So after sitting overnight, I start the car and the AC will not blow cold 50% of the time unless I turn the AC off and then on again, sometimes 1-3 times.
After that it will start to blow cold within 1 minute and runs very cool and efficiently.
if I don't turn it off and on, it will continue to blow warm air.
So after sitting overnight, I start the car and the AC will not blow cold 50% of the time unless I turn the AC off and then on again, sometimes 1-3 times.
After that it will start to blow cold within 1 minute and runs very cool and efficiently.
if I don't turn it off and on, it will continue to blow warm air.
#14