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From: The artist formally known as NONO5.0 Mobile, Al
When the ac button blinks, it usually means its low on freon. My guess is you have a leak somewhere in the system. Also, check the codes on the DIC and post them. More than likely though, you've got a leak somewhere.
Thanks guys ill try that. Thought it was gonna be a hot summer!
I highly you get a leak detector put the car in a closed garage and check for leaks. If you are only getting 3 weeks you have a leak.
My 99 has 78,000 miles bought it new and this week I checked the freon and added 4 oz to top it off. After 10 yrs this isn't bad.
But 3 weeks sends you hunting for a leak. If you don't have a leak detector and want to check the joints make up some dishwash soap and water and do a bubble check on the joints where the o-rings are.