Water pump/thermostat housing - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-19-2011, 02:45 PM   #1
Jeeper
 
Join Date: Jan 2011
Posts: 20
Water pump/thermostat housing

Hey guys,

I am having a heck of a time getting my jeep back together after replacing the water pump, thermostat and thermostat housing! I am continually getting a leak around the thermostat housing, I think, or the top of the water pump. I have a torque wrench and torqued the water pump to about 17 ft-lbs and the thermostat housing to 13 ft-lbs (156 in-lbs) as directed in haynes manuel, but still getting a leak. I have had both off double checked that all gasket material has been removed and re applied three different times now (with new gaskets each time) and I still get the same results. Please anyone got any ideas? Thanks!!!

Freshbrew is offline   Quote Quick Reply
Old 02-19-2011, 03:52 PM   #2
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,210
Images: 2
Leaks like that are often cause by not getting the surfaces that the gasket seats against 100% clean. I use nothing but a paper gasket, absolutely no RTV, and if I take great care to get the surfaces absolutely scrupulously surgically clean of all old gasket material, glue, RTV, etc., it forms a leak free seal. Virtually every leak I have ever had was always caused by the surfaces not being 100% clean and free of any contaminating bit of debris, old gasket, etc.

__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 02-19-2011, 06:35 PM   #3
Jeeper
 
DevilDogDoc's Avatar
 
Join Date: Jun 2010
Location: Yucca Valley CA 20 miles from JV
Posts: 2,362
Also make sure the thermostat is seated right in the housing it likes to get in there crooked and coolant pours out. I like using a tiny bit of Indian head shellac to keep it in place while I snug it down, just a light coat on the block and stick the thermo to it, then the housing over that. Has never failed me, and of course the paper gasket too.
__________________
Violence may not be the answer but it sure cuts down on the stupid questions
DevilDogDoc is offline   Quote Quick Reply
Old 02-19-2011, 09:46 PM   #4
Jeeper
 
Join Date: Jan 2011
Posts: 20
I'll give it another try. The leak is definitely from the thermostat housing. I have never had this much trouble with this, lol. Thanks guys.
Freshbrew is offline   Quote Quick Reply
Old 02-19-2011, 09:59 PM   #5
Jeeper
 
Join Date: Dec 2010
Posts: 26
or you could cheat and rtv it
a1cpetchell is offline   Quote Quick Reply
Old 02-20-2011, 10:25 AM   #6
Jeeper
 
SilverTJMike's Avatar
 
Join Date: Jan 2011
Location: Boulder,CO
Posts: 294
I just replaced mine yesterday , factory service manual says to wet the gasket before install.
SilverTJMike is offline   Quote Quick Reply
Old 02-20-2011, 09:35 PM   #7
Jeeper
 
Join Date: Aug 2010
Posts: 466
i use grease on my gasket so it can be taken off on the trail if needed and some on the t-stat to hold it in place
hookuspookus is offline   Quote Quick Reply
Old 02-20-2011, 11:28 PM   #8
Jeeper
 
scavanau's Avatar
 
Join Date: Apr 2009
Location: New England
Posts: 344
Quote:
Originally Posted by Freshbrew View Post
I'll give it another try. The leak is definitely from the thermostat housing. I have never had this much trouble with this, lol. Thanks guys.
Are you sure it's not a cracked housing?
scavanau is offline   Quote Quick Reply
Old 02-21-2011, 01:10 AM   #9
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
Are you sure you are putting it together correctly?

The t-stat goes in first, then the gasket goes on the outside of it next to the housing.
If you put on the gasket first, it won't seat correctly, then it leaks.

Engine - t-stat - gasket - housing.
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote Quick Reply
Old 02-21-2011, 04:02 PM   #10
Jeeper
 
Join Date: Jan 2011
Posts: 20
Yeah I'm sure I'm putting it together correctly. It's a brand new housing so I wouldn't think it would be cracked, but will check. I've actually worked on all of my cars since I was 16 and never had this much trouble. So I'm not new to the water pump/ thermostat, just can't seem to get this one going for some reason. Prob something stupid I'm doing.
Freshbrew is offline   Quote Quick Reply
Old 02-21-2011, 04:13 PM   #11
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
Notice the slight recess where the edge of the T-stat fits. If the gasket is on the wrong side of the t-stat, it holds the housing away just enough to leak.
__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote Quick Reply
Old 02-21-2011, 05:48 PM   #12
Jeeper
 
Wdkirk01's Avatar
 
Join Date: Aug 2010
Location: Lafayette, IN
Posts: 70
Make sure the heater hose coming out of the top of the thermostat housing is fastened securely with a hose clamp. My old hose was crappy and the clamp just couldn't secure it well enough to the housing. This caused a leak that made me think at first that the water pump and or gasket on the housing were leaking.

I put on a new hose and hose clamps. Everything is fine now.
Wdkirk01 is offline   Quote Quick Reply
Old 04-22-2012, 10:23 AM   #13
Jeeper
 
Join Date: Jun 2010
Location: NEPA
Posts: 28
Bump, I'm having the exact same problem as OP. I've reinstalled the t-stat three times now, once with RTV sealant and the housing is still leaking. I even bought a brand new housing, so it's not the housing that's cracked.
harvey_birdman is offline   Quote Quick Reply
Old 04-22-2012, 10:42 AM   #14
Jeeper
 
anthonytj97's Avatar
 
Join Date: Feb 2012
Location: bridgewater ,MA
Posts: 128
i had the same problem ,come to find out i cracked the thermostat housing .after the thermostat slid down when i was putting it back together
anthonytj97 is offline   Quote Quick Reply
Old 04-23-2012, 04:57 PM   #15
Jeeper
 
SilverTJMike's Avatar
 
Join Date: Jan 2011
Location: Boulder,CO
Posts: 294
I have done this twice the past year, I wet the paper gasket, then torqued it to factory spec's, no leaks or cracks either time.

I think the wetting of the gasket may have helped, just used water. Might have been in the service manual for the 4 cylinder, can't remember

SilverTJMike is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
94 Jeep 2.5 with water in oil ekytrader YJ Tech Forum 47 02-24-2011 09:25 AM
Oil Furnace - Hot Water Heating - Aquastat Settings TJeepman Off-Topic 1 10-07-2010 06:27 PM
Need Advice, 2010 Wrangler Water Hole Mistake jracer77 JK General Discussion Forum 4 05-25-2010 09:39 PM
Water, water, water Nicholson TJ Tech Forum 22 03-09-2010 02:38 PM
Water in cab - hypothetical erickpl TJ General Discussion Forum 5 04-25-2007 08:21 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:14 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC