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post #1 of 5 (permalink) Old 09-01-11, 07:15 AM Thread Starter
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Leaking Fluid from the Reserve Tank

I have a Taurus that sometimes leaks and sometimes doesn't. It usually happens when I stop and get gas and then continue to work. The car doesn't overheat but still leaks radiator fluid from the reserve tank. I drove home in the heat yesterday (100 degrees) and it didn't leak when I got home (32 Miles). I drove to work in the cool of the morning today (70's) and it was leaking when I pulled into the parking lot. There may be a crack in the reserve tank, but then why doesn't it leak all the time?
Any help would be appreciated.

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post #2 of 5 (permalink) Old 09-01-11, 09:35 AM
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Re: Leaking Fluid from the Reserve Tank

Get a pressure test on cooling system and it should show where leak is coming from .
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post #3 of 5 (permalink) Old 09-01-11, 09:38 AM
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Re: Leaking Fluid from the Reserve Tank

" Is this something I can do myself or will I have to take it into a shop? Could this be a Thermostat problem? "

You need a pressure tester to load up cooling system. If thermostat was sticking it should overheat .
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post #4 of 5 (permalink) Old 09-01-11, 01:09 PM
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Re: Leaking Fluid from the Reserve Tank

What about filler cap , checked that is sealing o.k ?
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post #5 of 5 (permalink) Old 09-03-11, 10:26 AM
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Re: Leaking Fluid from the Reserve Tank

This is a known problem on Taurus. There's usually a small split in the overflow tank. Split closes when cool and opens only when pressurized. You can buy a new one from the dealer, or I think DormanProducts.com makes an aftermarket replacement. When Dorman tools up to make an aftermarket part, you know it's a high failure rate item.

I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://www.ricksfreeautorepairadvice.com/
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