Thermostat
Thread Starter
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Tuned
Joined: May 2014
Posts: 317
Likes: 16
From: Richmond, VA
Thermostat
So, the ******* who owned my truck before me was a *******. From what I can tell, my thermostat housing is leaking because this idiot replaced the thermostat and left the old gasket, so i now have this wonderful leak that dumps a gallon a week.
Is this as simple as I think it is? Two bolts off, scrape it off, pop out the old thermostat, pop in the new one, new gasket, bolt it down, call it good. Right?
Is this as simple as I think it is? Two bolts off, scrape it off, pop out the old thermostat, pop in the new one, new gasket, bolt it down, call it good. Right?
Senior User
Joined: Sep 2008
Posts: 287
Likes: 1
From: SE WI
Pretty much. When I did mine, it seemed to help to get the paper gasket a little bit wet. Mine leaked a few times until I got it to stop.
The thermostat housing might be pitted-corroded, and could be leaking itself. The housing is available. Getting the pipes out of the old housing might be a challenge.
The thermostat housing might be pitted-corroded, and could be leaking itself. The housing is available. Getting the pipes out of the old housing might be a challenge.
Thread Starter
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Tuned
Joined: May 2014
Posts: 317
Likes: 16
From: Richmond, VA
Okay, stupid question time.
How do I drain the radiator without spraying coolant everywhere?
What is the original temperature for the thermostat? I'm seeing 160, 180, and 192, not to mention a few that are simply listed as "alternate temperature".
My truck is the 4.9L I6.
How do I drain the radiator without spraying coolant everywhere?
What is the original temperature for the thermostat? I'm seeing 160, 180, and 192, not to mention a few that are simply listed as "alternate temperature".
My truck is the 4.9L I6.
Last edited by jerryparks; May 10, 2015 at 09:27 AM. Reason: Forgot info
Logistics Pro
Joined: Mar 2011
Posts: 4,197
Likes: 558
From: Central Wisconsin
There is a petcock valve on the passenger side lower part of the radiator. Make sure the truck is cooled down, open the valve, and I also take off the radiator cap at that point to speed it up. I put a 190* in my truck. This one specifically -> More Information for MOTORCRAFT RT1139
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Junior User
Joined: May 2015
Posts: 68
Likes: 0
Yeah clean off the housing with a wire brush install thermostat (stock temp 192) in the housing. put on a thin layer of rtv then put on the paper gasket then put another thin layer of rtv on the block and put it together. No leaks.
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Junior User
Joined: May 2015
Posts: 68
Likes: 0
I agree with you, but I've had a few leak with just the gasket and none leak since I started using the rtv/gasket combo.. RTV is cheap and I don't like doing jobs twice. Especially on water pumps.
Thread Starter
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Tuned
Joined: May 2014
Posts: 317
Likes: 16
From: Richmond, VA
Okay, I'm prepared to kill someone. I've been to 8 autoparts stores, spent several hours on the internet, and yelled at my dog (im not sure that was productive), and I can't find a name for this part.
When you look at the thermostat housing on a 4.9, there's another piece that screws into it, it has the coolant temperature sensor in it, and connects to the heater hose. What the hell is it called and where can I buy one?!?
When you look at the thermostat housing on a 4.9, there's another piece that screws into it, it has the coolant temperature sensor in it, and connects to the heater hose. What the hell is it called and where can I buy one?!?
Junior User
Joined: May 2015
Posts: 68
Likes: 0
Apparently its called an 'elbow' Found a couple part numbers. E5TZ-18599-A and
E5TZ-18599-C. Here's one for sale. ELBOW | Genuine Ford | E5TZ-18599-C
E5TZ-18599-C. Here's one for sale. ELBOW | Genuine Ford | E5TZ-18599-C
Fleet Owner
Joined: Oct 2005
Posts: 20,785
Likes: 1,751
From: Kentucky
Apparently its called an 'elbow' Found a couple part numbers. E5TZ-18599-A and
E5TZ-18599-C. Here's one for sale. ELBOW | Genuine Ford | E5TZ-18599-C
E5TZ-18599-C. Here's one for sale. ELBOW | Genuine Ford | E5TZ-18599-C
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