I have all ready had it out and looked at it, cleaned it , ext. I was woundering if this is a normal problem others have had and if any one knows if I have to replace the hole overhead light assmbly or can just the motor and fan be replaced?

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89 Ford F3504x4CC 7.3 IDI turboed Intercooler and running on wvo now powered by a 1997 Cumins
87 300SDL on bio and wvo killed by chevy truck 5-24-06
1999 E300TD black with gray int.