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The BMW Range
5 Series
E39
Electrical Fan Failure
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<blockquote data-quote="gimli" data-source="post: 608576" data-attributes="member: 942"><p>very easy to test the aux fan, just supply 12v power to it directly, if it spins, then the fan is ok. Could also be your compressor. The aux fan should kick in when you turn your aircon on. If it doesn't, try to press the accelerator lightly and see if the aux fan turns or not. if it does, then probably compressor problem as the aux fan & compressor work hand in hand.</p></blockquote><p></p>
[QUOTE="gimli, post: 608576, member: 942"] very easy to test the aux fan, just supply 12v power to it directly, if it spins, then the fan is ok. Could also be your compressor. The aux fan should kick in when you turn your aircon on. If it doesn't, try to press the accelerator lightly and see if the aux fan turns or not. if it does, then probably compressor problem as the aux fan & compressor work hand in hand. [/QUOTE]
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Electrical Fan Failure
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