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A/c in car issue. Not blowing very cold.

Posted on 7/8/19 at 2:54 pm
Posted by pwejr88
Red Stick
Member since Apr 2007
37556 posts
Posted on 7/8/19 at 2:54 pm
Not blowing very cold and every so often blows warm for a few seconds.
Checked Freon, says it’s full.
Just had air filter replaced.

What could it be?
Been doing this for a long time but only recently did the air coming out turn to that foggy color that usually says low Freon.

?
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28032 posts
Posted on 7/8/19 at 2:55 pm to
relay?

Wife's went out last year. Would blow but was not cold.

It had a bad clutch relay. Replaced it and I was good to go.
Posted by Front9Bandit
Member since Dec 2013
15432 posts
Posted on 7/8/19 at 3:03 pm to
What type of car? Check relays for sure, if it’s a Honda it’s 99.9% the relay.
Posted by SmokedBrisket2018
Member since Jun 2018
1544 posts
Posted on 7/8/19 at 3:10 pm to
Do you see an oily residue coming from the condenser?
Could have a crack in the condenser somewhere.
I had same symptoms and I had small crack.
Posted by reds on reds on reds
Birmingham
Member since Sep 2013
4757 posts
Posted on 7/8/19 at 3:13 pm to
Just had my evaporator core replaced. $1700 later
This post was edited on 7/8/19 at 3:15 pm
Posted by SmokedBrisket2018
Member since Jun 2018
1544 posts
Posted on 7/8/19 at 3:15 pm to
quote:

reds on reds on reds


Luckily mine was still under warranty.
Posted by keakar
Member since Jan 2017
30152 posts
Posted on 7/8/19 at 3:17 pm to
1 - check if you electric radiator fans are working, if they arent the a/c wont work correctly

2 - nothing should be seen coming from the vents and if you do then its radiator coolant or frost from the coil that is freezing up

3 - most cars today have a temperature sensor that opens and closes the door to the heater and if that sensor is bad it wont let the a/c run as it should
Posted by SeaPickle
Thibodaux
Member since May 2011
3175 posts
Posted on 7/8/19 at 3:17 pm to
My truck was doing this the other month and it must have been a pressure valve stuck. I was good on Freon levels but i had the system evacuated and it fixed itself. Hopefully thats all it will become
Posted by Bedhog
Denham Springs
Member since Apr 2019
3741 posts
Posted on 7/8/19 at 3:19 pm to
year/make/model of the vehicle would be a great start here. Different vehicles have separate inherent problems with the ac systems.
Posted by keakar
Member since Jan 2017
30152 posts
Posted on 7/8/19 at 3:21 pm to
quote:

Just had my evaporator core replaced. $1700 later


you got off cheap, mine was $3900

the whole dash, steering column, and front seats had to come out to do it
Posted by reds on reds on reds
Birmingham
Member since Sep 2013
4757 posts
Posted on 7/8/19 at 3:27 pm to
Same with mine. Firestone had best price. Didn’t want to have it done but refilling my AC once a week was getting old
Posted by Bedhog
Denham Springs
Member since Apr 2019
3741 posts
Posted on 7/8/19 at 3:35 pm to
Y'all are getting screwed royally man . Damn near every vehicle needs the dash removed. I do em all the time for around or under $1000 and always use dealer evap cores.
Posted by pwejr88
Red Stick
Member since Apr 2007
37556 posts
Posted on 7/8/19 at 3:44 pm to
Dang y’all are quick. I can’t even keep up.

2008 Jeep Grand Cherokee Laredo

And I just learned how to change an alternator so please talk to me like I’m 6.
Posted by Clames
Member since Oct 2010
18830 posts
Posted on 7/8/19 at 3:53 pm to
quote:

Checked Freon, says it’s full.


How was this done?
Posted by pwejr88
Red Stick
Member since Apr 2007
37556 posts
Posted on 7/8/19 at 4:04 pm to
With the all-in-one Freon and gauge with adapter at Oreillys for like $65
Posted by Bedhog
Denham Springs
Member since Apr 2019
3741 posts
Posted on 7/8/19 at 4:46 pm to
That's a crappy way to check it. Take it to a shop. Have them do a drain,evacuate recharge. The shop machines will put the correct amount in the system by weight, not pressures. So many variables when doing it by pressure and you are only checking the low side with that crappy gauge that comes with the freon. What area do you live in?
This post was edited on 7/8/19 at 4:49 pm
Posted by Bedhog
Denham Springs
Member since Apr 2019
3741 posts
Posted on 7/8/19 at 4:48 pm to
Why did I get the downvotes? I'm dead serious. I work at a shop in Walker and we do them all the time, depending on the vehicle for $1000 and under.
Posted by Redlos
Baton Rouge
Member since Jul 2005
1161 posts
Posted on 7/8/19 at 4:49 pm to
Need to provide high and low pressure numbers (use a real gauge set). Is the compressor clutch engaging?

You need to provide more info....
Posted by Bedhog
Denham Springs
Member since Apr 2019
3741 posts
Posted on 7/8/19 at 4:52 pm to
High and low pressure numbers are so humidity and temp determined. I know there's charts but a good start is to completely evacuate the system. pull a vacuum for 15 minutes then put the correct weight of freon in the system.
Posted by pwejr88
Red Stick
Member since Apr 2007
37556 posts
Posted on 7/8/19 at 5:09 pm to
I appreciate your insight. I live off the Millerville exit in BR

*how much is that drain, evacuate recharge?
This post was edited on 7/8/19 at 5:10 pm
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