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AC Not Cold On Idle / Engine Light Coming On

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Old 09-21-2009, 11:31 AM
blile59
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Question AC Not Cold On Idle / Engine Light Coming On

I have a 02, V8 4.7 1500 with 143,000 miles. Just recently when the truck is idling the AC stops blowing cold air. It's never done that before. The engine light has started to come on about 5 minutes after the truck is started. No problems with cold AC while driving. Any ideas....I'm hoping for a small problem...but I've been told by my backyard mechanic "friends" that it may be the compressor going out. Thanks.
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Old 09-21-2009, 11:39 AM
HouTex
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You need to check and make sure the A/C compressor clutch is staying engaged at idle.

Then inspect the sight glass on the reciever dryer (small tank behind grill with a inspection window on top, possibly covered with a blue cap) and check to see if there are any bubbles in the view (A/C on, of course). If so, then your low on refrigerant.

Also make sure the Condensor is clean and not obstructed with debris/dirt etc..
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Old 09-21-2009, 11:46 AM
dazed01
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Could be a few things, but if your ac doesn't blow cold at a stop but does when you are driving i would start by checking the condenser fan.
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Old 09-21-2009, 12:04 PM
blile59
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Will do. Thanks. I just hope it isn't an arm and leg repair.
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Old 09-21-2009, 04:52 PM
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Yep, sounds like the condenser fan has failed. Under $100 bucks I believe.
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Old 09-21-2009, 08:09 PM
cheapbeater
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+3 on the condenser fan. mine doesnt work, and i have no cold air at idle... they were $80-100 on ebay
just turn on your ac and look at the fan
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Old 09-30-2009, 04:01 PM
blile59
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Found out that during heavy rains, the condenser fan will short because of moisture getting in. Changed a fuse and now it works. Dodge put out an alert saying the fan had been redesigned to prevent this. Thanks for yalls suggestions!

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Old 10-01-2009, 08:50 AM
dazed01
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Cool, I'm glad you got it fixed
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