Another coolant leak 04 Duratec - thermostat this time - Taurus Car Club of America : Ford Taurus Forum
 
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post #1 of 3 (permalink) Old 05-17-2016, 01:23 AM Thread Starter
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Another coolant leak 04 Duratec - thermostat this time

Having replaced the upper radiator hose a couple of weeks ago, I thought my leak was fixed. I only just removed the bottle of distilled water from the trunk!

Today, after extended stop and go driving in hotter weather, a small puddle of coolant appeared after shut down.

The leak is at virtually the same place. After checking my previous work, I discovered the leak was at the point where the thermostat housing meets the lower radiator hose, almost directly below the last leak I just fixed.

I managed to squeeze my hand underneath and could feel some coolant on the spring clamp and maybe some on the thermostat housing at the join.

Looks like I need to replace the o ring and maybe the short hose. I suppose while I'm doing this, I should change the thermostat - it's the original and I'm at 92k miles now.

Questions:

- Rockauto has Stants and Gates. Which would you choose for thermostat and gasket?

- Is this a usual place for a leak? I presume the o ring should fix the problem or can there be a problem with the housing itself?

Last edited by rjacket; 05-17-2016 at 01:25 AM.
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post #2 of 3 (permalink) Old 05-17-2016, 10:05 AM
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May inspect the housing carefully for cracks/damage. If not using Motorcraft, either brand should suffice.
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post #3 of 3 (permalink) Old 05-17-2016, 03:44 PM Thread Starter
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Would it make sense to back off the bolts and re-torque them?

Could it make things worse?
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