2004 F350 w/ 6.8l V10 - Everheating Advice Please
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Tuned
Joined: Nov 2008
Posts: 499
Likes: 87
From: Oregon
2004 F350 w/ 6.8l V10 - Everheating Advice Please
Good Morning;
I have a: 2004 F350 w/ 6.8l V10
I just bought this truck - it overheats slowly - When it is overheating, the upper radiator hose and the coolant bottle are Very Hot while the lower radiator hose is slightly/fairly warm.
Would this most likely mean the Thermostat is bad, maybe stuck in a barley open condition? *I have checked the Fan Clutch, it has very good resistance when trying to spin by hand, it does not wobble in any direction, and the water pump has No Leaking whatsoever. Radiator has No Leaking of any kind either.
I believe, Its the last year of the Ford 2 Valve 6.8l V10 - which Temperature Thermostat is it supposed to have in it?
*Also... can I just remove the Thermostat just to get the truck home ? ((70 miles) Then replace the thermostat at home.
Thank You for all advice
I have a: 2004 F350 w/ 6.8l V10
I just bought this truck - it overheats slowly - When it is overheating, the upper radiator hose and the coolant bottle are Very Hot while the lower radiator hose is slightly/fairly warm.
Would this most likely mean the Thermostat is bad, maybe stuck in a barley open condition? *I have checked the Fan Clutch, it has very good resistance when trying to spin by hand, it does not wobble in any direction, and the water pump has No Leaking whatsoever. Radiator has No Leaking of any kind either.
I believe, Its the last year of the Ford 2 Valve 6.8l V10 - which Temperature Thermostat is it supposed to have in it?
*Also... can I just remove the Thermostat just to get the truck home ? ((70 miles) Then replace the thermostat at home.
Thank You for all advice
Last edited by riderboy1961; Oct 3, 2025 at 11:22 AM.
Thread Starter
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Tuned
Joined: Nov 2008
Posts: 499
Likes: 87
From: Oregon
I been doing a bit of research online and made some phone calls to Ford, Auto Parts Stores and even Summit Racing trying to get info on the Correct thermostat for my 2004 6.8l v10 engine.
Passing on my results, correct me on any of these:
1) Autozone - Duralast - p/n 74285 / 185 degrees
2) Baxters Auto Parts - MotoRad but with Baxters p/n 742-185 / 185 degrees (7c3z8575a)
3) Walmart - Gates - p/n 33469S - 192 degrees (too high for my engine)
4) Ford Factory - Motorcraft - p/n RT-1147-185 degrees (discontinued)
" Alternate"- MotoRad - p/n 2028-180 (per an online search)
Motorcraft - p/n RT-1195 - 192 degrees (unsure if discontinued)
5) Amazon - MotoRad - p/n 2028-180
Summit Racing - JET - p/n 10172-180 180 degrees - (Powertech low temp stat)
Motorcraft - p/n f1vy8255a - water neck/thermostat housing "Seal"
Passing on my results, correct me on any of these:
1) Autozone - Duralast - p/n 74285 / 185 degrees
2) Baxters Auto Parts - MotoRad but with Baxters p/n 742-185 / 185 degrees (7c3z8575a)
3) Walmart - Gates - p/n 33469S - 192 degrees (too high for my engine)
4) Ford Factory - Motorcraft - p/n RT-1147-185 degrees (discontinued)
" Alternate"- MotoRad - p/n 2028-180 (per an online search)
Motorcraft - p/n RT-1195 - 192 degrees (unsure if discontinued)
5) Amazon - MotoRad - p/n 2028-180
Summit Racing - JET - p/n 10172-180 180 degrees - (Powertech low temp stat)
Motorcraft - p/n f1vy8255a - water neck/thermostat housing "Seal"
Last edited by riderboy1961; Oct 3, 2025 at 11:02 PM.
Thread Starter
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Tuned
Joined: Nov 2008
Posts: 499
Likes: 87
From: Oregon
I drove down and R&R'd the Thermostat. (but first, I stuck the thermostat into hot water to watch if the thermostat would open and shut as the water came to a boil) I used the: Baxters Auto Parts, brand: MotoRad, Baxter Auto Parts p/n 742-185 / 185 degrees (7c3z8575a).
I removed the lower radiator hose from the radiator so I could get it drained quickly. After installing the new thermostat, I refilled the cooling system while the engine was running. It took 3 3/4 gallons of water.
I used water only just in case I had to drain th system again if it ended up being the radiator.
The heat needle never rose above halfway for the rest of the day.
Thank you for all the help everyone!!
I removed the lower radiator hose from the radiator so I could get it drained quickly. After installing the new thermostat, I refilled the cooling system while the engine was running. It took 3 3/4 gallons of water.
I used water only just in case I had to drain th system again if it ended up being the radiator.
The heat needle never rose above halfway for the rest of the day.
Thank you for all the help everyone!!
Last edited by riderboy1961; Oct 28, 2025 at 01:33 PM.
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