Thermostat housing

Jimbanjer

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So... I found that the PO has filled that hole in the thermostat housing with RTV for a reason. The coolant is now bypassing the thermostat. The thermostat housing is no longer available at parts stores or through a ford dealership so I’ll have to pull one off one of my parts trucks. I read something about them having a bearing/valve thingamajigger and was wondering if anyone had a pic of what one is supposed to look like so I can make sure I pull a good one.
 

79jasper

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You can leave it open, or plug it.
If you plug it, you should drill a small hole in the thermostat so you can still bleed out the air.

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Jimbanjer

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Well I can’t get my engine up to temp anymore now that I’ve replaced my water pump and thermostat. Thermostat is 190 and looks identical to the one I took out. I figure it’s either got to be me clearing that hole causing it to bypass the thermostat or a bad fan clutch.
 

Clb

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I bet not.... Something is amiss.
Op I think type4 has a thread about bleeder 101 on here....
 

Jimbanjer

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It’s just an advanced auto but it looks exactly like the one I took out.its possible it old one may have had a bleeder Which could be why the PO had removed the cork/bearing and filled the hole with RTV.
 

Jimbanjer

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If I just refill that hole will that solve my issue? I wasn’t having any problems before my water pump went out.
 

Clb

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Read the stickies...
The stat is GARBAGE..
Only motorcraft

My 88 had a china statt in it, when I got it....(locked open) it never got hot in town.
Swapped it out, no bleeder in housing ,left it open, NO more issues.
 
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