Just bought an '04 with the 4.8 with 155,000 on it. Truck looks and runs great but I noticed that when I run the A/C, there is an intermittent noise coming from the rear of the truck. It sounds like a pressure relief valve is releasing pressure in short bursts...A/C is blowing cold but I am concerned that the noise is a symptom that something is about to go wrong. Any feedback is appreciated!
A/C blow off valve??
- Thread starter DGB73
- Start date
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- Tags
- a/c noise a/c problems
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