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We have noticed a small leak coming from the thermostat on our ford focus it only seems to be there when the engine is cold what should we do?
Wiki User
∙ 14y ago
There are a few reasons for a leak coming from and around the thermostat on most Focus cars:
- The inner (thin plastic) wall inside the thermostat housing may have cracked - you will need to replace the thermostat housing - check http://www.focushacks.com/index.php?modid=59&ht=Replacing%20the%20thermostat%20and/or%20thermostat%20housing for detailed instructions
- The O-ring may have disintegrated. You need #203 O-Ring replacement. This is an engineering mistake on a lot of Foci, as they use Nitrile O-rings which don't resist high temperatures well, if you are replacing them use Viton.
- The thermostat housing gasket may have cracked. Even if it's not and you end up changing the thermostat housing, you should probably change it (cheap and avoids further problems)
http://forums.focaljet.com/svt-headquarters/466771-coolant-leaks-cheap-fix-info.html
http://www.carcomplaints.com/Ford/Focus/2002/cooling_system/leaking_thermostat_housing.shtml
http://forums.focaljet.com/problems-service-recalls/508657-slow-coolant-leak.html
Wiki User
∙ 14y ago
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