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#1
06-30-2009, 11:10 PM
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w 140 question
hi... i have a 93 mercedes 300se and my auxiliary fans not working with the a/c on and it make my car runs hot to 120 degrees. and its weird because it comes on at about 110 degrees but its allready overheating. with no a/c is normal 80 degrees is there a relay for the auxililary fans or what do you think is the problem with the fans thanks for the help.
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#2
07-01-2009, 08:05 AM
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There is a relay & 2 ballast resistors for the low speed aux fan operation.
The low speed operation is dependant on pressure, what is the high pressure reading? If you check for power at the resistors with the air on & engine running, do you have 12V?
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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