Quote:
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Originally Posted by smw
Tested the auxilary radiator fan with external power and the motor works fine, but fan does not come on when hooked to car. Checked the parts catalog and it only shows an auxilary fan switch for a 1979 450SL not SLC. Does the SLC have a fan switch and if so is it the same as the SL? Is the auxilary fan switch the likely culprit for the fan not coming on? I have not tested the power source all the way back.
Thanks. SMW
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The switch is a common issue.
Disconnect the switch, run a jumper between body feed wire and fan, test system.
Vehicle: 1979 Mercedes Benz 450SLC
Part: A/C Temp. Switch
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A/C Temp. Switch
California
2 spade terminals on short pigtail. Chassis: -019056
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A/C Temp. Switch
Federal
2 spade terminals on short pigtail. Chassis: -019097
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A/C Temp. Switch
@ receiver drier
California
Located on receiver drier for auxiliary cooling fan. Identified by 2 spade terminals on short pigtail with red base. Chassis: 019057-
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A/C Temp. Switch
@ receiver drier
Federal
Located on receiver drier for auxiliary cooling fan. Identified by 2 spade terminals on short pigtail with red base. Chassis: 019098-
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A/C Temp. Switch
@ receiver drier
Located on receiver drier for auxiliary cooling fan. Identified by 2 spade terminals on short pigtail with red base.
http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1QC0Y25IE1QU179RTA&year=1979&make=MB&model=450-SLC-002&category=R&part=A%2FC+Temp.+Switch&appChassis=_any
Have a great day.
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Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
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1985 300SD
1983 300D
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