Ac not blowing cold
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Cross-Country
Joined: Jun 2016
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Ac not blowing cold
It seems like the front ac in my ex isn't blowing very cold. The rear seems to be blowing colder than the front. I checked and it seems to be ok on freon. Any tips to help the front cool down some more?
Senior User
Joined: May 2010
Posts: 351
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From: South Texas/RGV
The heater core always has water flowing through it. If the damper door has opened it will allow hot air to mix with the cooled air. Most common cause is a vacuum leak (see the other A/C thread going right now) but also the doors can sometimes stick. If you don't have a vacuum leak then put the system in manual mode and work through all of the combinations of air direction and A/C vs heating.
Lead Driver
Joined: Oct 2010
Posts: 5,420
Likes: 16
From: Ouray, CO
You have manual A/C or auto HVAC controls? Verify blend door is working, try changing temp to observe change.
There is also a small vacuum actuated valve on the heater hose (just above the a/c lines near firewall) the grey vacuum line often comes loose.
This valve blocks heated coolant from flowing through heater core to increase front a/c cooling.
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highteckredneck
6.0L Power Stroke Diesel
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Apr 11, 2012 01:20 AM
