Since I have the old thermostat off, I am going to boil test it if it opens at all. 120C is well over the 100C fully open point so if it opens then the problem must be elsewhere.
We can pretty much rule out the radiator because I just remembered that last night when I was swapping the thermostats I didn't put it in right the first time. So while I was filling from the upper radiator hose it flowed out from the inproperly installed thermostat - so the flow in the radiator was free just by gravity. I will double check to make sure I don't have the "cold pressurized upper hose" symdrome tonight. Tan --- "Dave M." <[EMAIL PROTECTED]> wrote: > Tan, > > I think the new pumps are OK, but I forget. I recall > that last time I > checed, the rebuilt pumps from the dealer (or Rusty) > were a lot less > than new. Maybe that's no longer true? I generally > prefer dealer parts > due to the warranty. I believe the dealer parts you > buy through Rusty > also carry the dealer warranty (ask him for details > - I'm not sure on > that.) Brian Toscano had done some research on OM60x > water pumps, I > think - maybe he can add his $0.02? > > Oh, btw - I would still test the t-stat (or install > a new dealer > t-stat), and it wouldn't hurt to put a garden hose > in the top of the > radiator and make sure there's good flow. If the > flow is normal and > outlet is still cold, to me that once again points > to the water pump. > If flow is restricted, the radiator may be the > problem (plugged). > > :-) > > +dm > > > ------------------------------ > > Date: Wed, 28 Dec 2005 09:22:47 -0800 (PST) > > From: Tan Qu <[EMAIL PROTECTED]> > > Subject: Re: [MBZ] SOS - '87 190Dt Overheat! > > > > > > Dave and all, > > > > I am more leaning toward to a bad water pump. When > I > > turned the heater on which in turn turned the > > (electric) auxillary water pump the temp droped > maybe > > 2 degrees. My feel was that the coolant was > plainly > > not flowing throught the system, even the closed > > circuit. > > > > What's the story on the water pump? I guess the > new > > Laso or Geba pumps at Rusty's website are no good? > > > > Tan > > _______________________________________ > http://www.striplin.net > 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://striplin.net/mailman/listinfo/mercedes_striplin.net >
