6.0 overheating
Thread Starter
|
Mountain Pass
Joined: Dec 2003
Posts: 100
Likes: 0
From: linden, mi
6.0 overheating
On Friday got caught in some construction traffic. Stop and go for about 20 mins. Just as I was turning to get on the freeway check engine message appeared. Temp gauge was pegged. It wasn't a bit before. Ran it on the hiway after about a half of mile the temp came down to normal. It was 92 at the time. Ran it today no codes let it idle for a half hour saw temps between 189-198. What would cause the sudden overheat? themostate stuck closed for a bit, clutch fan not lock up? A little stumped. Truck is 05 260,000 miles 185,000 on short block original water pump and fan.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 26
From: Middle Tn.
When it overheated did you hear the fan blowing? If it didn't get your attention, the viscous clutch would be a good place to start. If the fan was on a stuck t-stat would be a good starting point and t-stats are cheap.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
The Motorcraft part might be a Hayden, but not 100% sure. At $150-$275 this isn't a cheap part to guess on.
Have you inspected the fan clutch wiring, and tried a temporary blue wire mod to force lockup to verify the clutch is the problem?
https://www.ford-trucks.com/forums/1...-wire-mod.html
Have you inspected the fan clutch wiring, and tried a temporary blue wire mod to force lockup to verify the clutch is the problem?
https://www.ford-trucks.com/forums/1...-wire-mod.html
Thread Starter
|
Mountain Pass
Joined: Dec 2003
Posts: 100
Likes: 0
From: linden, mi
No I haven't tried that however while driving as temp hit 210 I could hear fan ramp up and temp would drop to 106. I did this several times in an hour drive 70 mph and 90 F outside temp. What is coincided normal highway temp?
Logistics Pro
Joined: Mar 2013
Posts: 4,097
Likes: 23
From: Kissimmee,Fla
Trending Topics
Freshman User
Joined: Jul 2017
Posts: 46
Likes: 0
A lot of the local guys are buying adapters to put a 7.3 fan clutch on once the factory 6 0 electric clutch fails.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread Starter
|
Mountain Pass
Joined: Dec 2003
Posts: 100
Likes: 0
From: linden, mi
Well after monitoring temps for two weeks sho heated up again. This time I cough it before it berried the needle I plugged in the scanner in traffic and saw temps quickly rising from 225 to 240. I pulled into a parking lot just as it hit 240. Let it coll down for a bit and saw temps in the teens in the way home. Did not hear fan at all. I will try the blue wire test, is there anything else that triggers the fan other than the pcm?
Laughing Gas
Joined: Dec 2010
Posts: 1,155
Likes: 0
From: Las vegas nevada
I was having some issue towing my 31 foot bumper pull. Hi coolant and oil temps. Fan never fully engaged like it has in the past. I have a switch for blue wire mod. When I would engage it fan would become fully locked but it would make a sequel noise and rpms were increased with it locked. So I am in the middle of changing fan clutch now. I went with Hayden 3261.
Laughing Gas
Joined: Dec 2010
Posts: 1,155
Likes: 0
From: Las vegas nevada
i used an air chisel on old fan nut to break it free then it spun off. i used a 48mm wrench to tighten the fan back down with a slight hit if chisel to snug it down. 8 mm for fan shroud closet to radiator (2 bolts). and 15 mm for other half of fan shroud (4 bolts). Losened radaitor hold down clamps for more room (4 8mm bolts). and my step on front of bumper... pretty straight forward.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
Fan clutch engagement info:
https://www.ford-trucks.com/forums/1...l#post17351202
You might have an EOT issue or an AC pressure switch issue.