6.4 Powerstroke Thermostat Replacement P0128
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- Опубліковано 9 січ 2025
- Welcome back
If your getting P0128 on your 6.4 powerstroke. You most likely have a failed thermostat.
I didn't get the best video of removing the black bracket that goes around the thermostat housing but I feel like I gave good details on how to remove from engine. I'd love to hear from the engineers that were involved in designing the thermostat housing. I feel it could have been designed better for service. Once the housing is out replacing the thermostat is pretty easy.
The installation process is nothing special. Just take your time installing the 4 bolts and install everything reverse of removal.
Hopefully this job goes smooth for you. I remember the first phew times doing this job it was very frustrating getting the black bracket out and back in.
The thermostats were supplied by the customer on this job. Usually I use Ford/Motorcraft parts for diesel repairs. The thermostats came from Autozone. I'm pretty sure they are in the same bag that they come in from Ford.
So you may be just fine using thermostats from any parts store.
If you need the clip for the coolant hose
7L1Z-8B365-B
Thanks for watching. I hope the video was helpful and you enjoyed it.
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Chris showmerepair
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So glad I found your video. I watched one a few years back and it was so disappointing to see how much disassembly the dude had to do that I just shelved the thermostats lol. I haven't had good heat for 4 years haha. Now I see that I can tackle this, no problem. Thanks dude.
Yea they are not too bad to do. Just take your time. Happy it helped. Thanks for watching
This video is great, such a time saver. Didn't think I was going to be able to get that retaining plate off but with enough fiddle fucking around with it I got it. Thank you so much!
@@ben-jamin588 that’s why I made video. Happy it helped.
Thanks!!! Best video I’ve seen on these thermostats! Took me a bit longer (fighting with that bottom hose clip & that bracket, but still I know that it save me a ton, & I’ll know how to do it the next time!
@@sidj1488 that’s why I made the video. Happy it helped and thanks for watching
Thanks for the tip! That ring was kicking my a$$!
Thank you! I have to do this replacement 😩 looking for a list of tools needed rn
Gracias me ayudó mucho para hacer el trabajo
Good morning 😊
Morning
@ShowMe Repair sorry I finally got time to finish this video.
I thought my 6.9 ford thermostat was a bugger.😂
Do you have any idea why they used 2 thermostats on the 6.4?
Thanks for the hair pin part number, would that part fit gas engines too. IE coyote?
The blue rag idea is classic, works great too.
Only reason I could think of 2 thermostats is for redundancy. And or the for flow. 2 small holes can flow the same as one big hole. The 2 holes are more compact.
8B365 is the base part number. If you google that number it will bring up the f150 clips also
@ShowMe Repair Thankyou for the numbers
Thank you 😉
Your welcome. Thanks for watching
I bought a non running 2010 6.4L F-350....I plugged my OBD in it and it threw up the P0128 code...Could this be a reason that is preventing the engine from cranking? It also has 3 bad Glow plugs which I'm looking into doing as well...Just doing research to see if this is the exact reason why its not cranking.
Glow plugs and p0128 is not the cause for no start.
Can you scan tool read data or just a scan tool?
08 6.4, I keep blowing antifreeze out of the resovior cap. I have a new water pump, thermostats (6 months ago) and it is head studded. No oil in resovior or white smoke. Any thoughts?
Is the egr cooler still on the truck?
@@showmerepair no it's fully deleted
I'm not sure if I over filled it or not this last time. I just went and got a new cap to try it out. But my Temps are running normal, just spewing out around the cap
Head gaskets and or cracked head
@showmerepair so I replaced the cap, check the level of the coolant before I left as well as drying off everything I could see wet, drove it for 15 miles or so semi hard, no more fluid. I also checked the dipstick and it is full and looks completely normal. I honestly believe I had a bad cap. I will see how it does in the next couple days.
Edit: the cap I had on it was not oem, and it did not have a pressure release hole in the top of it.
do you have to drain the coolant?
@@david8414 yes
Now....did you do these thermos bcuz you had a "reduced power" lite ?
@@bobbysoto7328 no. Either it had a P0128 and or the engine would not get up to temp
I took the degas bottle out before the upper hose. Way easier.
I can understand that. When you’re getting paid flat rate the thought process is sometimes different.
I didn’t break my snap ring lol
Just take the dam cooling system out, and be done with it. Stop trying to find a shortcut. By the time everything is said and done I doubt you will have saved any time. But the frustration level will be much lower.
You can just move the AC and trans. Coolers out of the way. And just take the fan off to. Zap strap them back. Just watch them, don't drop tools or anything on them.
Why do you have an egr lol
Because I don’t want the EPA knocking on my door or my customers door
Why change thermostats just trade truck in for the new. Problem solved....
I’m not a fan of 6.4s but there are people that love them. I’m happy to share my knowledge to keep them going.
@@showmerepair I have a 6.4, still runs like new...
Why couldn't they just use a conventional thermostat for God sake
Engineers have to justify themselves I guess. Thanks for watching