Well I did a pretty thorough search for me and can't quite seem to find what I am looking for. My 1994 SL 320 has 74k miles, when I ride at lower speeds (ie.30-50mph)with the ac on my temp guage is creeping up to the 120 level even with high speed fans engaged. When I shut off the ac and turn on the heat for a short time the temp will drop to it's usual 96-98 running temp reading. At first when this happened I checked fuse at position 7-fine, Fused relays green 30 amp had a blown fuse, blue 15 amp fine, I replaced the blown 30 and upgraded the blue to a 25 from advice in a post left by ArtDalton. Fans work no problem now but still have the same bug. All surface temps by my infrared thermo which is Fdegrees are within 5 of each other, at full hot top radiator where dash reads 118 I get 204/converts to 96C am I too anal here or is my temp sender gone. Since this happened and all fuses were replaced I drove it again same results and a blown 30 amp fuse, also no high speed fan op at all during that time I have a cool harness 92 which is not installed at this time until I straighten this mess out. I am attaching a picture of my relays are these in the right positions? Relays are closest to the firewall in my car.
Thanks much Keith
Fan Clutch replaced 7/06
Complete engine Wiring Harness replaced 10/06
head gasket replaced 10/06, with thermo kit at that time
Aux Fan Harness replaced 7/07

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