I'm trying to get the service records from the PO, if his sister who was cleaning out the parents' house has not thrown them out -- anyway, the radiator looks to be newish, and the rest of the car was very well maintained, and it does not run hot (and it is HOT here), so maybe it is just some way to get the fan to run if that sensor was bad (and it appears if it is, it would necessitate opening the system to change it as it is stuck right up there in the flow path).
I might ponder it more, does not appear to cause any problems. Thanks for the info. --R Marshall Booth wrote: > Rich Thomas wrote: > >> My bad, new car -- it is an 84. The thing that is bodged to the hose >> looks like a temp sensor of some sort (almost like the water temp sensor >> that screws into the manifold on my old GM cars!). If so, it is sorta >> measuring temp on that hose fitting. hmmm. >> >> The aux fan runs, I will have to see when it kicks on. >> >> I can take a piccie of it is need be. >> > > I expect that someone modified the AC temp sensor circuit to assist in > engine cooling. That is NOT required if the cooling system is working > properly. The aux fan ONLY should run intermittently when the AC is > running (in an '84 or earlier 126.120 - in 1985 they added an engine > coolant temp sensor that also engaged the aux fan at around 100 deg. C. > or a bit more). > > Marshall > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
