lower coolant leak
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More Turbo
Joined: Dec 2004
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From: Jamestown Tn
lower coolant leak
I found a leak on my lower coolant hose flange connected at the water pump. it really leaks after a long drive and under pressure. For those of you who have replace this should the flange itself be replace also or just the o ring (i think that's whats in there)? I changed out the t stat last fall and put on a new flange and all it good. Also I should only need to drain the fluid down to the level just below the pump hose that's leaking i hope. any of you guys have the Ford part #'s ? thanks jeff
Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
IIRC there is a gasket with the flange. When I flushed my system and replaced the hoses when I bought the truck, I paid the $30 or so for a new flange. Considering what could happen if it fails I figured it was a worthwhile investment.
Make sure you get the correct flange since there are a staight one and a 90 degree bend. Don't trust what the auto parts store or dealer tells you. Look at what you have and make sure you get that.
Make sure you get the correct flange since there are a staight one and a 90 degree bend. Don't trust what the auto parts store or dealer tells you. Look at what you have and make sure you get that.
Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
I found a leak on my lower coolant hose flange connected at the water pump. it really leaks after a long drive and under pressure. For those of you who have replace this should the flange itself be replace also or just the o ring (i think that's whats in there)? I changed out the t stat last fall and put on a new flange and all it good. Also I should only need to drain the fluid down to the level just below the pump hose that's leaking i hope. any of you guys have the Ford part #'s ? thanks jeff
Change the o-ring and it will be fine.
Lead Driver
Joined: Feb 2000
Posts: 5,374
Likes: 46
From: Palm Bay, Florida
Take it apart, clean everything in there very well, get the "o" ring seal for the T-STAT-it is slightly thicker, use some NAPA Sil-Glyde or Plumbers lube on the seal when installing, thats what I did at this suggestion a while back and it has been drip free ever since!
Cargo Master
Joined: Oct 2007
Posts: 2,712
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From: BoCoMo
Bought my 'square' o-ring at the auto parts store down the street. Not a 'special' order part.
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Postmaster
Joined: Jun 2010
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From: Longview, TX
I'm confused, are we talking about the Tstat housing? If so, I've replaced three on 3 different trucks with a square cross sectioned oring and have never had one start leaking after that. Others seam to have issues with getting a seal.
I always get the oring with a new tstat at oreillys, and get a wire wheel or wire brush on that housing to knock off any rust. If need be replace the housing with the cheap replacement from oreillys or the billet replacement from dieselsite I think.
If its the lower connection, idk.
I always get the oring with a new tstat at oreillys, and get a wire wheel or wire brush on that housing to knock off any rust. If need be replace the housing with the cheap replacement from oreillys or the billet replacement from dieselsite I think.
If its the lower connection, idk.
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Cargo Master
Joined: Oct 2007
Posts: 2,712
Likes: 107
From: BoCoMo
I'm confused, are we talking about the Tstat housing? If so, I've replaced three on 3 different trucks with a square cross sectioned oring and have never had one start leaking after that. Others seam to have issues with getting a seal.
I always get the oring with a new tstat at oreillys, and get a wire wheel or wire brush on that housing to knock off any rust. If need be replace the housing with the cheap replacement from oreillys or the billet replacement from dieselsite I think.
If its the lower connection, idk.
I always get the oring with a new tstat at oreillys, and get a wire wheel or wire brush on that housing to knock off any rust. If need be replace the housing with the cheap replacement from oreillys or the billet replacement from dieselsite I think.
If its the lower connection, idk.
I found a leak on my lower coolant hose flange connected at the water pump.
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