Thread: Very Confused About Overflow Tank
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Old Jan 14, 2008 | 01:43 PM
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Steve Hellums
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Joined: Oct 2006
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From: INDIANA
Default Re: Very Confused About Overflow Tank
[quote=BrianBrave]It was a nice 80deg day today - so I took the SRT out for a little canyon run and when I got home I popped the reservoir cap (slowly) and although I did not have a thermometer I can say the coolant in the tank was HOT HOT HOT! It was actually steaming on a 80deg day. I dipped a rag into the tank and the coolant was just way to hot to touch. BTW - the coolant dash gauge was 1/2 way like always.

I then (by accident) pumped the upper radiator hose that’s clipped at the oil filter housing and I could hear coolant running into the reservoir tank thru the small overflow hose. (see pictures & blue tape marks) So I squeezed the small overflow hose while pumping the radiator hose and could feel the coolant being pushed through and into the tank. Could another SRT owner do this to confirm?

Bottom line - I think engine and HE coolant flow together. Maybe not a lot but they do some co-mingling when the engine is running.

So I think even a small tank for the radiator (Like you are doing Steve) will be a good thing. Any separation would be good IMO.

Steve - since you have your front bumper off - do the hoses for the cabin heater run -or- tap into the system near IC pump? I was trying to trace them out but I am hoping you’ll have a better view.

Thanks

BB
I checked out the heater hose, it comes from the water pump down to a real small pump that's mounted kind of on the bumper above the HE pump. I guess these strange little car's have their own cabin heater pump . It leaves the pump and goes up on top of the fender well to what I'm guessing are two variable solonoid valves from the duel climate control.
 
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