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91Reasons 02-19-2008, 08:54 AM Its a 1991 C4 with 117,000 (approx) miles on it. When you turn the heater on it blows cold air, after running for about 30 minutes it will get little warm but not alot? I have checked everything that I could think of and running short on answers. Any ideas? :cheers: arizonaames269 02-19-2008, 12:47 PM Its a 1991 C4 with 117,000 (approx) miles on it. When you turn the heater on it blows cold air, after running for about 30 minutes it will get little warm but not alot? I have checked everything that I could think of and running short on answers. Any ideas? :cheers: Power flush and try again after changing fluids.... | |