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Old 07-18-2015, 09:49 AM   #1
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Unhappy Coolant leak thermostat housing

Alright guys any help would be appreciated.I noticed my coolant reservoir keep getting low after a month or 2.So I took it to the dealership and they did pressure test and couldnt find any leaks.6 months later I notice dried coolant under my thermostat housing weephole.Should I change the waterpump or thermostat housing? My car never overheats just engine rpms dip when my ac is on.Click image for larger version

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Old 07-18-2015, 10:57 AM   #2
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No easy answer.
Try to determine the exact source of the leak. At the leak rate you're talking about you may have a little time before having to fix it.
If the leak appears to be originating from the pump weep hole(s) it could very well be an impending failure.

The following was copied from an article off the web, FYI.

Does a drip from the weep hole mean seal or pump failure?
Perhaps. Seals will drip as the seal lap in but to understand a more prolonged or intermittent “drip” you have to understand a seal’s design. Seals purposefully drip because capillary action draws fluid from the seal face. As the seal drips, it helps wash loose debris out and reduce the heat load. Most drips evaporate or fall on the road and are not noticed.

Naturally, a more pronounced drip indicates a compromised seal and impending bearing failure.

There are a lot of post already on this subject. You should look at them and get familiar with the common problems people are having with water pumps.
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Old 07-18-2015, 12:45 PM   #3
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My water pump started leaking at 29,000 mi. For no reason. Dealer pressure checked and replaced under warranty
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Old 07-19-2015, 07:57 AM   #4
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Coolant leak thermostat housing

My 2012 v6 stang water pump leaked and started getting hot a month after I bought it , took to dealer and was fully covered and replaced under warranty. Something to do with return valve in coolant bottle.


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In Haines City. Fl.
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