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Originally Posted by mikracer
Good to know about that pressurized system. I'll have to check out that bleed line and see if it foams out. But when you say foam, are you talking about just bubbles, or something different?
Also, is there anything else about a 97.5 thats blatant to look for? I know the AC controls are the newer ones, but how else can you tell?
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With the truck cold; fire it up for one minute then shut it down. Crack the radiator fill cap you should get a quick short burst of air, maybe with a small amount bubbling. If there is alot of pressure, say more than two seconds it would be wise to investigate further.