[killer71]

it's the compressor. My suburban was doing the same exact thing. I replaced the tensioner and still the same flapping. Talked with the experts, they said change the compressor, i did and haven't had a bit of trouble. We tore the compressor a part once we got it off and it was the read valve busted on the discharge side. Was still cooling and no noise. Take my word cuz i've been there and done it...