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Rattle like a pea in a tin can from heater motor


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We just bought a 75 2002 and we had the heater blower motor replaced, we reused the fan, and we replaced the water pump while he was in there.


It worked like a charm for 48 hours but now there is a rattling sound  like a pea in a tin can from heater motor when the blower motor stops and starts.


It only lasts for a second or two but doesn't sound healthy.


Has anyone here had this issue before? Does it resolve itself?





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Fan contacting main heater flap inside the heater box? I didn't get mine adjusted quite right on the first try (fan is a friction fit fore/aft on the shaft) and in certain flap positions, the fan blades contact the main flap. Got it better on the second try. I let a pro do it for the third try...


There are weights on the blade to balance it as well. Maybe one of them is contacting something?


1974 2002 - Megasquirt and turbo

2018 BMW M2/ 2013 Porsche Cayenne Diesel

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