Coolant leak, maybe water pump? - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 09-18-2013, 03:15 PM Thread Starter
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Coolant leak, maybe water pump?

I have been having a small random coolant leak for about 3 months. It only leaks after truck cools down never when running or when it's hot. So today I came out from work and had a huge puddle of coolant under the truck. I look under the truck and its leaking from above crank pulley so guessing its the water pump at that moment it was a good constant dripping. I then start the truck to see if I can get it to really start pissing out the water pump but it then stops. I fill up the coolant reservoir that was half empty drive it home sitting here now with no leaks. So could it be the water pump or maybe something else I can't see?
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post #2 of 11 Old 09-18-2013, 03:57 PM
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waterpump. Leak'n from the "weep" hole. It wont leak while trucks run'n, since coolants' a flow'n.

Go to ROCKAUTO and get the AIRTEX pump..$82.00std...and a TON of members run them.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #3 of 11 Old 09-18-2013, 05:08 PM Thread Starter
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I was told to get a thermostat as well. Would this be a smart choice to do?
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post #4 of 11 Old 09-19-2013, 06:40 AM
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ya, why not. Stick with oem. Their abit much, but worth it, over the autostore brands.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #5 of 11 Old 09-20-2013, 10:55 AM
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Ford used Airtex pumps, you can get them at Northern Auto for under $100. I also heard the CARQUEST also sells the Airtex, but for about $20 more, but this comes with a lifetime warranty. If/when I have to do mine again this I will try CARQUEST. This is a good time to do a flush, switch to ELC, add a coolant filter (don't use precharged filters) and switch the upper rad hose to one that goes around the fan belt instead of through it, just tell the parts dude that you need it for a dual alternator set up.
You should also get a new thermostat housing, they shouldn't be reused, they are under $20 at Ford, or get a billet one from Dieselsite and it can be reused.

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post #6 of 11 Old 09-20-2013, 10:56 AM
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Don't bother with the 203 degree thermostat, just use the stock 195 and you will be fine, but make sure you get the OEM stat, otherwise you will probably be sold one that is to tall to work. Ask me how I know.

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post #7 of 11 Old 09-20-2013, 11:44 AM
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post #8 of 11 Old 09-22-2013, 07:46 AM
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My water pump locked up on Friday I was hauling a jacked up dodge to the 4 wheel jamboree in Indianapolis and we heard the belt squeeling and then smelled burnt rubber and then noticed my coolant temp guage pegged. I parked it at a locals house for the weekend and we got another truck and Iv been doing some research on what to do with it, sounds like you guys recommend the airtex pump? Also what coolant should I run and Iv seen some stuff about the fan clutch and all that on another forum I guy said he had to get different hoses on his 02 to fit the airtex mines a late 99 does anybody have any advise on what I should expect when I tear into it?
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post #9 of 11 Old 09-22-2013, 09:40 AM
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nope, tear into it and replace. Maybe a new t-stat too. you can run the ELC since it being a L99. Bang'n 80k+ on my Airtex...rockauto for 82.00std.

99.5 x-cab 7.3l, 6spd, 161k miles.....
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post #10 of 11 Old 09-22-2013, 05:43 PM
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Autozone carrys a dura last that relocates the t stat but doesn't come with a new t stat I'm leaning towards the airtex since I have reviews and its 50$ cheaper
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