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Old 05-23-2004, 05:48 PM
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Join Date: Sep 2002
Location: San Francisco Bay Area
Posts: 452
M103 aux fan normal operation question...

Hi All,

I looked at the schematic of the aux fan and it appears it should not be running 'til the either the A/C pressure switch or the Engine temp sensor triggers their respective relays. Am I correct?

Mine seems to run at LOW speeds when both A and B relays have been removed... please advise...

thanks,
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'87 W124 260E (DD)
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'97 993 Carrera
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