AARRGGGGH !! i was sooo sure... . Define "running hot". Also, make sure that the dealer gave you the right part (common problem). see what temp is stamped on the switch- the higher one is when the fan engages, the lower when it disengages. If your engine temp is below the temp switch is rated for (the higher one) you are not overheating. also, check if your main fan is engaging. really, the whole circuit consists of a switch, fan, and a fuse. Unless there is a relay somewhere. also, if fan does not work it could be your wiring.
1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"