Running hot, water pump issue? - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 08-25-2019, 11:31 AM Thread Starter
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2005 F250 EGR deleted, coolant filter, studded, new main harness, Texas- I recently fixed a sticking turbo and replaced the oil cooler because I was running 212+ ECT, no load, with up to a 20 degree delta. Now I have less than 4 degree delta, no load, up to 10 degree with a 6,000 lb load, but my ECT temps at 70mph are ~208 no load, and ~216 with a load. Fan kicks on at 218 and ECT instantly drops 6 degrees, oil drops 2 degrees. I just replaced thermostat, and the heat works fine. I believe the radiator is original, and leaks a small bit around the stamped plastic seam. I also have a leak on the fan shroud which appears to be coming from the water pump.

Would a small radiator leak cause temps to be high?

Would a busted water pump only have the issue of running hot?

If it’s a water pump issue, is there a good alternative to BPD? I only use this truck to pull a travel trailer and run around town, so I would rather not throw over engineered expensive parts on a truck that only runs ~6,000 miles per year.
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post #2 of 18 Old 08-25-2019, 01:11 PM
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a small leak will not create heat

any water pump with a metal impeller is what i would choose if not a BPD ( I already run one)

while the metal impellers are usually stamped ( if not BPD) they have been reported to run just as cool as the fancy OEM type impeller

check diesel site and napa i heard they have metal

does your truck read close to ambient after the truck sits for 24 hours ?

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post #3 of 18 Old 08-25-2019, 01:34 PM Thread Starter
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Quote:
Originally Posted by ZMANN View Post
a small leak will not create heat

any water pump with a metal impeller is what i would choose if not a BPD ( I already run one)

while the metal impellers are usually stamped ( if not BPD) they have been reported to run just as cool as the fancy OEM type impeller

check diesel site and napa i heard they have metal

does your truck read close to ambient after the truck sits for 24 hours ?
That NAPA pump is similar to a few metal impeller pumps I saw on Amazon. Good to know that it’s working well for you. Yes, both the ECT and EOT read ambient temp each morning. The only symptom that I’m seeing is the operating temp runs high. It also fluctuates depending on driving speed. If I’m driving 45mph, ECT will be in the low 200s. I see a bunch of posts on here saying their 6.0 runs close to 192 no matter the load or speed.
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post #4 of 18 Old 08-25-2019, 04:45 PM
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you had the same issue with the old t-stat?

and this is an OEm tstat ?

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post #5 of 18 Old 08-25-2019, 05:34 PM Thread Starter
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Yes same issue with previous tstat, and both are OEM.
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post #6 of 18 Old 08-25-2019, 06:22 PM
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so fan clutch or water pump is what i would look into and sounds like you need a waterpump anyway if it is dripping from the tattle tale
so it is not throwing money away if you start there

is that about what your thinking ?
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post #7 of 18 Old 08-25-2019, 06:43 PM
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Dieselsite makes a metal impeller water pump, decent price and lifetime warranty.
https://www.dieselsite.com/20045july...waterpump.aspx

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post #8 of 18 Old 08-25-2019, 06:48 PM Thread Starter
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Yes, that was my guess, I’m new to the 6.0 so I wanted to confirm that I wasn’t overlooking anything else. Thank you for your help. I’ll update after I change it out.
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post #9 of 18 Old 09-05-2019, 12:34 PM Thread Starter
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So I got the water pump out and it was completely busted up. Unfortunately, after putting the new pump in, the temps are still the exact same. Looks like I’m going to pull everything back out and replace the fan clutch. The new water pump is $38 on Amazon. ASIN B07PDKB6P9
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post #10 of 18 Old 09-05-2019, 12:58 PM
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Have you considered taking the waterpump out again and putting a snake cam down the cooling passages? Not even sure if it would go very far, but I'm wondering if all that missing plastic is stuck somewhere slowing the flow down.
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