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Old 01-31-2010, 07:12 PM   #1
jyax82
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Exclamation Need HELP!!!! 2003 Zetec Coolant Leak

I am new to the Focus, I just bought my car last Sunday. I noticed a wet spot under the car this afternoon. It appears that coolant is leaking from a manifold looking part that is on the end (drivers side) of the engine, it has several coolant lines running to it, including the upper radiator hose. I can see a small amount of coolant along the top edge where this plastic part bolts to the head. Any idea of what this part is called, and has anyone else seen this issue? I have to get the car fixed by tomorrow night. Any input is much apperciated.

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Old 01-31-2010, 07:17 PM   #2
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Replace your thermostat housing, gasket, and thermostat. This is a common problem with the Zetec. The part of the housing that holds the large O-ring gasket breaks allowing the gasket to move causing it to leak.

BTW welcome new MI crew guy.
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Old 01-31-2010, 07:18 PM   #3
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It could be your waterpump. I had one go on my old focus and it wasn't too hard to replace. Also, it wasn't that much $. I think a new one is less than $100.
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Old 01-31-2010, 07:23 PM   #4
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I dont think its the water pump, as the leak is coming from the back of the engine. I would think a water pump leak would show near the front by the belts.

Thanks AH1F39, I love my Focus even though I've only had it a week, however I love it a little less tonight.
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Old 01-31-2010, 07:26 PM   #5
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Quote:
Originally Posted by ah1f39 View Post
Replace your thermostat housing, gasket, and thermostat. This is a common problem with the Zetec. The part of the housing that holds the large O-ring gasket breaks allowing the gasket to move causing it to leak.

BTW welcome new MI crew guy.
Do this.

The thermostat itself isn't 100% necessary if your heat is good, but it is good preventative maintenance and the part is cheap. I got a nice Stant for less than $10.

The water pump is on the other side of the engine.
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Old 01-31-2010, 07:26 PM   #6
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Thermostat housing. I wouldn't lie to you. It happens to EVERY Zectec. That is the manifold looking thing you described.
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Old 01-31-2010, 07:28 PM   #7
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Quote:
Originally Posted by ah1f39 View Post
Replace your thermostat housing, gasket, and thermostat. This is a common problem with the Zetec. The part of the housing that holds the large O-ring gasket breaks allowing the gasket to move causing it to leak.
X2
Shouldn't have to replace the thermostat itself, though; just the gasket and housing.

Link to How To Procedure
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Old 01-31-2010, 07:31 PM   #8
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Thanks guys, I just did a search, and found a couple of other posts that said the same thing. I'll check out the How-To, and then hit the stealership tomorrow.
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Old 01-31-2010, 07:43 PM   #9
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Quote:
Originally Posted by ReFocusedDSG View Post
Do this.

The thermostat itself isn't 100% necessary if your heat is good, but it is good preventative maintenance and the part is cheap. I got a nice Stant for less than $10.

The water pump is on the other side of the engine.
Quote:
Originally Posted by BC_ZX3 View Post
X2
Shouldn't have to replace the thermostat itself, though; just the gasket and housing.

Link to How To Procedure
It is true that replacing the thermostat itself is not "necessary", but if the housing is old enough to have broken how old is the thermostat?

If you can afford the $10-$12 why not replace it while it's out?

How much is it worth to you not to have to do it again because the car starts to overheat or wont get warm enough to get heat because an old thermostat goes bad?
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Old 01-31-2010, 07:48 PM   #10
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That was my point, simply that it's a good idea.

Who knows, money might be really tight for him, sometimes we have to cut a corner here and there even if we know it's going to cost more time later.
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