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Old 03-15-2005, 05:02 AM
hoddo hoddo is offline
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Join Date: Jul 2004
Location: sydney australia
Posts: 12
450 fan

in my 79 450 slc the fan runs when in the 0 position also.. i dont think it a mod by previous owner .. fan works fine on all 4 speeds .. I always thought it was bcos these things are so darn airtight that it needed a permanant air supply for the pilot
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