Brian, "As for the opening the front core when things are > hot, > it does drop the temp substantially for a bit. Once > the sum total coolant reaches a consistant temp it > climbs back to where it was" This suggest to me that your thermostat is defective or you have something else acting as a thermostat. When you bring the two heaters online you are effectively doubling your radiator size. This should hold your coolant to the lowest temperature the thermostat will allow. gary --- "Brian T." <nobleman36@yahoo.com> wrote: > Hi Gary, > > I have the rear core valve at the mid point (just > replaced the rear core last month). I will make > sure > to bring both cores to full open when I re-bleed the > system. > > As for the opening the front core when things are > hot, > it does drop the temp substantially for a bit. Once > the sum total coolant reaches a consistant temp it > climbs back to where it was. > > As for highest temp, yes.. it is reached under other > than flat and level on a hot day. > > Thanks again! > Brian > > > --- gary hradek <hradek@yahoo.com> wrote: > > > Brian, > > You might be alright with this. When the > high > > speed fan kicks on, if you turn on both heater to > > max > > can you bring the temperature down to the lowest > > normal operating temperature? > > Do you turn both heaters on when you bleed the > > system. > > Your highest temperature should be reached when > you > > are going up a hill on a hot day. Is this the > > case? > > regards gary > > --- "Brian T." <nobleman36@yahoo.com> wrote: > > > > > Brian, > > > Be more investigative here? > > > So what happens when you turn the heater on when > > the > > > temperature goes up? What year as there is a > big > > > difference between the two models. Did you > > replace > > > the switch on the radiator yet? How long does > it > > > take at an idle for the low speed fan to kick > on? > > > Where are you located. > > > I disagree with those who claim you don't have a > > > problem and you are correct to be concerned. > > > gary > > > > > > ~~~~~~~~~~~~~ > > > > > > Hi Gary, > > > > > > > > > My van is an 85'. The low speed fan will kick > on > > > after the needle sweep on the temp guage > surpasses > > > the > > > coolant light by say 1\8 inch or so. The high > > speed > > > comes on about mid way between the light and the > > > right > > > guage stop. The fan switch is a couple years > old. > > > > > I > > > replaced it with the radiator in the summer of > > 2002. > > > > > > The interesting thing is that prior to replacing > > the > > > radiator my temp guage never really ever passed > > the > > > coolant light. The rediator was replaced due to > > > leaks, not temp problems. > > > > > > This weekend I am going to try and bleed this > > again > > > at > > > my dads shop. I'll get things good and hot, > jack > > > the > > > nose up 36" and let things settle out, run the > > idle > > > up, open the bleeder valve in the back, then > crack > > > the > > > bleeder up from (very carefully with a rag over > it > > - > > > no 2nd/3rd degree burns wanted!) > > > > > > I'm hoping that this is nothing but a really > > > stubborn > > > bubble. > > > > > > Brian
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