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Any problems with metal thermostat housing?

10553 Views 7 Replies 4 Participants Last post by  05mustang024
Well, got home this evening and noticed I was steaming from the hood (hit the panic button HARD LOL) and after looking I am assuming it's the thermostat housing cracked where its pressed together (or glued jk lol) have about 87,000 lost a little over an inch of coolant, a little puddle built up at the bottom of the intake (not in the intake) my temperature was normal, anyway when I parked I could hear it hissing for a couple minutes coming from around the front of the intake and seen a wet spot on the thermostat. Didn't get to take it apart yet as it was getting dark so I'm waiting til morning to tear it apart to make sure, but,

My question is how is the metal thermostat from ebay? Did anyone have any problems with it? And is the price worth it?

Also I will be using AMUSTANGROCKS guide for changing the thermostat housing along with my chiltons manual

Been a minute since I posted lol but thanks everyone.

EDIT, If I start my car and it doesn't leak cold (make the hissing sound I heard at regular temp.) and after it warms up fully(then hear the hissing leak) it should be the thermostat housing correct? Haven't tried it yet but that's what Im assuming. Thanks
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Ok, so I waited 4+ hrs to start her making sure she was cold, (2:00am) went out and started her to let her warm up fully, after about 8 mins(give or take a couple minutes, I had a six pack in me lol) she took about 30-45 seconds to go from completly cold to her regular temp at driving (like the thermostat wasn't opening or closing which ever one it is) she reached regular temp and stayed there, didn't overheat but the heater blew cold??? Couldn't hear the leak while the engine was running but once I turned off the engine I could hear the leak (around the thermostat like I heard before) ( didn't want to feel around the intake as I didn't want to get burned lol) like I said it's dark and I don't want to start tearing her apart til the morning but we're these the symptoms anyone else had?
The only problem that I had with the aluminum housing was that the holes were tapped for the wrong threads and I had to grind a little clearance for the idler pulley bracket. I contacted the guy who makes them and sent him pictures and he said he would take care of it. I've had no other problems.
You may have a little problem if your Mustang is an '05 V6 with the throttle body heater. (You can tell if you have the heated TB by looking under the TB, do you see 2 hoses running to a block under it? If so you have the heated TB) If you do, then contact the seller before you buy. There was a problem with the clearance between the upper radiator hose/t-stat housing and the heater block. (I have this problem). The quick fix, and the one I am using, is to use the aluminum box and the original plastic t-stat housing. Works great, and no clearance issues. I seem to remember the seller has since fixed the problem, but I'd check and make sure. I've been running mine for the last 2 years, and it works great! No problems at all.
Well, got the therm housing out and sure enough there's a crack along the seam where it's pressed together closest to the temp sensor (right in back of the housing) which caused it to puddle right on top of the block
I soaked it all up but could it have damaged anything by puddling up right there?

Ps got a pic of the thermostat housing crack but can't load it up from my iPad so I'll figure that out later
Lol the cost from the dealer will be 192.04$
That's for the
Upper and lower thermostat housings
Temp. Sensor
O-rings for thermostat and the lower housing
And coolant
You're probably in a rush to repair your car but you can try if you're on a budget. You can buy the parts separately or as a kit. It only takes a few days for parts delivery. At the top of the page click on Marketplace Forum and then click on Rockauto for a discount code.

Many members have purchased the aluminum housing instead to eliminate future cracking.
One more question,

Is it as simple as just pouring new coolant back in? (50/50 gold motorcraft ofcourse) and giving the top hose a couple squeezes then let it warm up with the heat on?

Need a quick responce as I gotta get it done tonight, got everything back together just had to wait for the wife to bring back distilled water( the one thing I forgot lol)

Well, I got her done it was simple lol no leaks

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