Hi Everyone,
I am coming up on my 100,000 mile extended warrenty limit and I am starting to experience some trouble with my AC/Heating unit. I get a "cooing" noise, like a dove or pidgeon, when I accelarate. It is not all the time but can happen when accelerating from a stop or from 60 MPH to 65 MPH. It seems the hotter the weather the more pronounced and often it occurs. We actually had a cool enough day that I put on the heat and the same thing occured.
I took the truck by the Ford dealer about a month ago complaining about the temp output of the AC. The output is cool at first but 2:00 minutes into a ride it is actaully hot to the point that in 85 degree weather it is better to open the window. The service rep and a technician used a thermometer and said as long as the reading is 40 degrees or less within 30 seconds of turning on the AC it was within tolerance. Unfortunately I ran the AC on the way over to the shop in order to deplete any cold air that had gathered in the system overnight
- it was 7:00am when I went to the shop and I believe that there was a reserve in the system (cold air) when they tested the system. I was told to wait until an 85 degree day came along and then go back and have it tested. I work during the week and every weekend so far has been damp and rainy. It is also a $124 diagnostic charge to test the system for leaks, and they already say it is within tolerance. I was told that AC system cooland doesnt' "go bad" and that any time a recharge is necessary it is because there is a system leak. Is this true?
I just now started to develop a noise in the rear axle area that occurs when breaking/turning. It doesn't matter which direction I'm turning so I believe it is activiated when I brake. This is more easily re-created so I'm sure they'll figure this out.
I have made an appointment for Thursday this week and was hoping somone may have some insight into this issue. I just know Thursday will be cool and not be able to reproduce the poor cooling and I'm not confident that the dealer will be able to reproduce the cooing sound either. Unfortunately I can't stick around to test drive the truck for them.
Anyone ever experience the cooing sound?
Dave K.