Antifreeze leak
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
Sounds like the water pump to me. It's most likely leaking at the shaft. I would change the pump. Matter of fact I did change my pump because of the same leak.
By the time you get the fan and shroud off to see where the leak is you have got the worst part of changing the pump already done.
By the time you get the fan and shroud off to see where the leak is you have got the worst part of changing the pump already done.
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Elder User
Joined: Oct 2007
Posts: 672
Likes: 0
From: NJ
Thanks all. I rented the fan clutch set from Autozone today. Now, I just need to find a re-built water pump. It's going to be hard on Memorial Day weekend, so it might have to wait till next week.
Thanks for all the help.
Thanks for all the help.
Cargo Master
Joined: May 2002
Posts: 2,530
Likes: 7
From: Montana
I bought mine from northernautoparts.com. They sell the factory airtex and i got it delivered to the house for under $100. u cant go wrong. not a problem with it, been on the truck for almost 3 years now
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Elder User
Joined: Oct 2007
Posts: 672
Likes: 0
From: NJ
Alright, so I bought a new Duralast water pump from Autozone. On the instructions inside, it reccommends replacement of the radiator cap, fan clutch and thermostat while doing the water pump. Is this really necessary? Also, it says that if the old pump will still circulate coolant, you should use chemical cleaner and backflush the coolant system. How is that even done?
Posting Guru
Joined: Feb 2007
Posts: 1,327
Likes: 2
From: Las Vegas, NV
No not really necessary IMHO but always a good idea. I'm not sure what a chemical flush is but here's a link from a thread that has good info about a coolant flush. https://www.ford-trucks.com/forums/5...questions.html Did the service manual say anything about a chemical Flush?
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Elder User
Joined: Oct 2007
Posts: 672
Likes: 0
From: NJ
Can I flush it once the new water pump is in by draining it, then filling it up with distilled water, and repeating that a few times? Or, do I need to do it with the old water pump? Also, when I fill with distilled water after draining, do I add that to the radiator via the radiator cap?
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Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
The cooling system is so complicated with lot of cavities that it is impossible to fully flush it. I read a story of other car owner, that had the seller using wrong coolant of different color and after flushing it 3 times the new yellow coolant still got some old green stuff in it.
Not that you have to worry about it too much. Some old coolant contamination is included in the service interval calculations.
I installed coolant filter on my truck, even I bought it with almost 200k on it and used lifetime coolant from FleetPride. This coolant is fully mixable with other, so I just drained the old coolant and filled up with new stuff.
Not that you have to worry about it too much. Some old coolant contamination is included in the service interval calculations.
I installed coolant filter on my truck, even I bought it with almost 200k on it and used lifetime coolant from FleetPride. This coolant is fully mixable with other, so I just drained the old coolant and filled up with new stuff.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
1 7/8" IIRC I used a pipe wrench when I did mine.
Posting Guru
Joined: Feb 2007
Posts: 1,327
Likes: 2
From: Las Vegas, NV
Can I flush it once the new water pump is in by draining it, then filling it up with distilled water, and repeating that a few times? Or, do I need to do it with the old water pump? Also, when I fill with distilled water after draining, do I add that to the radiator via the radiator cap?
The cooling system is so complicated with lot of cavities that it is impossible to fully flush it. I read a story of other car owner, that had the seller using wrong coolant of different color and after flushing it 3 times the new yellow coolant still got some old green stuff in it.
Not that you have to worry about it too much. Some old coolant contamination is included in the service interval calculations.
I installed coolant filter on my truck, even I bought it with almost 200k on it and used lifetime coolant from FleetPride. This coolant is fully mixable with other, so I just drained the old coolant and filled up with new stuff.
Not that you have to worry about it too much. Some old coolant contamination is included in the service interval calculations.
I installed coolant filter on my truck, even I bought it with almost 200k on it and used lifetime coolant from FleetPride. This coolant is fully mixable with other, so I just drained the old coolant and filled up with new stuff.
Last edited by 60RatRod; May 25, 2009 at 03:10 PM. Reason: add info
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Elder User
Joined: Oct 2007
Posts: 672
Likes: 0
From: NJ
OK, I used a pipe wrench and got it all apart, pump off. I think I'll need a new thermostat anyway because the old one is really stuck in the pump, and I'm afraid if I bang it around too much I'll break it. How much is a thermostat? Also, I'm having quite a time trying to get the tall fitting that is top and center off, it's in real tight. So far so good, had to pack it in for tonight, so I just stuffed rags in all the exposed openings.
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
This housing would be your best bet, no more rusting from the stock stamped steel one, plus if you wanted a thermostat, they have the 203*......http://www.dieselsite.com/index.asp?...ROD&ProdID=188
Posting Guru
Joined: Feb 2007
Posts: 1,327
Likes: 2
From: Las Vegas, NV
I have a question:
Whats the benefit of the 203 thermostat. I have a GM LT1 350 and understand the benefit of running a 170 degree stat in it, but don't understand the reason behind the 203.
Thanks Dan
Whats the benefit of the 203 thermostat. I have a GM LT1 350 and understand the benefit of running a 170 degree stat in it, but don't understand the reason behind the 203.
Thanks Dan