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re: Car AC problem: The car AC is only cold when driving.

Posted on 5/11/18 at 2:05 pm to
Posted by Athis
I AM Charlie Kirk....
Member since Aug 2016
16352 posts
Posted on 5/11/18 at 2:05 pm to
quote:

Sounds like a lack of airflow through your condenser at idle


I had this exact problem and that is what it was. The mechanic told me that is what he thought it would be. I took the car home and sure enough the electric fans were not working. A lot of times car electric motors get a little corrosion and stop working. I gave a few taps on the electric motor with a hammer and they started right up and the AC started to work at idle. Probably saved me a small bundle.
Posted by 610man
Louisiana
Member since Jun 2005
8321 posts
Posted on 5/11/18 at 2:06 pm to
Good, that's the best time
Posted by Polycarp
Texas
Member since Feb 2009
5744 posts
Posted on 5/11/18 at 2:09 pm to
I would think it's a fan clutch
Posted by Open Dore Policy
The Commodore State
Member since Oct 2012
5451 posts
Posted on 5/11/18 at 2:09 pm to
quote:

Car AC problem: The car AC is only cold when driving


So what's the problem Nancy boy?

Roll the windows down and drive like a man.
Posted by CoachChappy
Member since May 2013
34198 posts
Posted on 5/11/18 at 2:10 pm to
quote:

Shop quoted me $800 to fix. I ordered on Amazon with overnight shipping for ~$150 and replaced in 45 minutes.


All hail YouTube and amazon.

My security company quoted me a new camera system for $1k. Amazon has that shite for $400.
Posted by East Coast Band
Member since Nov 2010
66950 posts
Posted on 5/11/18 at 2:20 pm to
Check coolant/antifreeze level.
Posted by deanwelles
EBR Parish Prison
Member since Mar 2008
180 posts
Posted on 5/11/18 at 2:23 pm to
Electric fan or electric fan relay. Typically very easy to fix yourself. Watch a video on YouTube, fix it, ???, Profit.
Posted by alphaandomega
Tuscaloosa-Here to Serve
Member since Aug 2012
17077 posts
Posted on 5/11/18 at 2:36 pm to
quote:

Water pump bad or blockage in lines preventing coolant from circulating in engine?




That would only matter to the heat. The AC is separate and uses freon.
Posted by mdomingue
Lafayette, LA
Member since Nov 2010
46794 posts
Posted on 5/11/18 at 3:00 pm to
quote:

Electric fan or electric fan relay.


This is the answer with almost 100% certainty.
Posted by LSUFanHouston
NOLA
Member since Jul 2009
40960 posts
Posted on 5/11/18 at 3:02 pm to
Since we are throwing out answers here, I'm going to go with a faulty thermostat. Air blowing across your engine helps to cool it when in motion, which explains the temp increase when you are idle.

Just as easily can be a fan issue or a water pump issue.

The A/c doesn't stop working when you are idle, you are just feeling the effects of the higher vehicle temp.
Posted by CHEDBALLZ
South Central LA
Member since Dec 2009
23240 posts
Posted on 5/11/18 at 4:16 pm to
I had the same problem on A Ford 500..... Solution was to trade it in.
Posted by CoolHand
Member since Dec 2011
2113 posts
Posted on 5/11/18 at 4:28 pm to
Going to give another idea...

I had that problem and found that computer shut it off because my RPM at idle was too low. I cleaned the throttle body and that fixed the RPM issue... AC worked at idle after that.

You should verify your idle RPM is where it should be.
Posted by Spasweezy
Unfortunately, Louisiana
Member since Jan 2014
7250 posts
Posted on 5/11/18 at 5:06 pm to
Get a new car. It’s time.
Posted by Jim Rockford
Member since May 2011
105193 posts
Posted on 5/11/18 at 5:10 pm to
Your LSU superfan neighbor could cool you down with his hose.
Posted by HamzooReb
Utah
Member since Mar 2013
13823 posts
Posted on 5/11/18 at 6:50 pm to
Sounds like a simple AC problem. One day I got in my car and fan was blowing full blast without car being cranked. Only was to make it stop was disconnecting the battery or removing the fuse
Posted by starsandstripes
Georgia
Member since Nov 2017
11897 posts
Posted on 5/11/18 at 7:15 pm to
quote:

That would only matter to the heat. The AC is separate and uses freon.


Yeah but he mentions temp of engine, so I thought he was having engine temp go up and down as well?
Posted by pwejr88
Red Stick
Member since Apr 2007
37858 posts
Posted on 5/11/18 at 8:15 pm to
All you need is to add coolant

Posted by LCA131
Home of the Fake Sig lines
Member since Feb 2008
77208 posts
Posted on 5/11/18 at 8:17 pm to
quote:

All you need is to add coolant



Dont be condescending. Just chill, Bro.
Posted by LSUPhreaK
LaPlace, La.
Member since Dec 2003
10944 posts
Posted on 5/11/18 at 8:36 pm to
AC electric condensor fan. Just changed my own on my Dodge Ram. $50 new off Ebay. Did the work in about 45 minutes. AC was hot while idling, but would get colder with increased speed (not RPM) due to natural airflow across the condensor. The compressor kept tripping on high temp when there wasn't enough airflow.
This post was edited on 5/11/18 at 8:38 pm
Posted by pwejr88
Red Stick
Member since Apr 2007
37858 posts
Posted on 5/11/18 at 9:03 pm to
I only know about the coolant because this exact thing happened to me
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