mishimoto failed!
New User
Joined: Oct 2010
Posts: 11
Likes: 0
I need to find out the latest and greatest because I'm facing this issue now after market or ford. FYI I've had my electrolytes tested every time the computer tells me to and they come up normal. More research it is for me
Fleet Mechanic
Joined: Jul 2003
Posts: 1,815
Likes: 24
From: Houston
Here is a website on Electrolysis (current in cooling system). I don't know much about it, but I have heard of it in other makes/models as well.
How to test for electrolysis | Vehicle Enhancement Labs
How to test for electrolysis | Vehicle Enhancement Labs
Elder User
Joined: Jul 2012
Posts: 508
Likes: 0
My mishimoto failed after a year I'm not happy about it since I don't off road at all and my roads are fairly smooth but that being said I'd much rather shell out $100 than have to buy it retail again retail price. And it's really not difficult to take out the radiator once you have done it once. So you won't have to pay a shop to do it.
More Turbo
Joined: Dec 2011
Posts: 572
Likes: 29
I wonder if anyone looked into rubber mounting the radiator. It would seem to me that allowing the radiator to float, isolated from the frame, might cure the problem. Just thinking out loud, I haven't had the pleasure to pull a radiator..... yet.
Cargo Master
Joined: Aug 2010
Posts: 3,229
Likes: 64
Here is a website on Electrolysis (current in cooling system). I don't know much about it, but I have heard of it in other makes/models as well.
How to test for electrolysis | Vehicle Enhancement Labs
How to test for electrolysis | Vehicle Enhancement Labs
aluminum radiator technical information
Back in the day of my new car dealer time, when radiators where all metal, we frequently used a voltmeter to measure for current. Coolant that needed to be changed would act as a battery, very low voltage, but voltage just the same.
We also tested our marine diesels the same way. Although on my own boat the coolant just got changed on a regular schedule, every 2 years or 500 hours.
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Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
Coolant that is bad is .3v if I recall.
If you think it's being casused by it you can try a grounding strap.
Another thought is a bad t-stat creating a simular issue as the 6.4 has. Thats just a random guess however.
If you think it's being casused by it you can try a grounding strap.
Another thought is a bad t-stat creating a simular issue as the 6.4 has. Thats just a random guess however.
Hotshot
Joined: Apr 2013
Posts: 10,133
Likes: 665
From: NH
I'm assuming all your failures are the primary radiator? Does the secondary radiator ever leak / fail? If it does not, then why? Especially in light of the video from PSHelp above, you would think both radiators would shift on the 6.7L. However, the radiator support design appears to be different on the 6.7L than from the 6.4L. Not to mention, the truck in the video was a truck that would flex the most - a 450 dually long bed. Some of these guys are running SRW short bed trucks and still getting the problem and not off-roading.
Super Moderator
Joined: Aug 2008
Posts: 37,384
Likes: 1,868
From: Frederick, MD
Plastic at the ends of the radiator.
My 6.4 had the original radiator in it after I sold it 5 years later.
I put 86K on it was a lot of it either off road or cross country heavy towing.
My 6.4 had the original radiator in it after I sold it 5 years later.
I put 86K on it was a lot of it either off road or cross country heavy towing.
Thread Starter
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Senior User
Joined: Aug 2004
Posts: 350
Likes: 1
From: central MN
Alright, I replaced the mishimoto today with another mishimoto. Hopefully this on lasts longer than the last. I put off installing this one for several months because it was not leaking to bad but it got to the point it was leaking out of both sides. The install took about three hours. I had it warming up and had to run get some more distilled water so i took the wife"s car to pick it up. I got back and things were a little low on coolant so I mixed some more up. As I was looking at the motor and checking things out it hit me! I did NOT take out the black plastic protective caps on the new radiator!!!! How did I forget to do this? They should really put caps that go OVER the inlet and out let, not one that stick inside. Still my fault. The top one was a piece of cake to get out, it was just in the radiator a few inches. The bottom one was a different story. Long story short, 2-1/2 hours later I had the bottom plug removed. Jesus, that sucked. There are rubber pads that are one the bottom mounts and everything seemed to have movement so I don"t know why this truck is eating radiators.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Wow, that's gotta be frustrating.
I still haven't seen anything conclusive about what's causing these radiator failures. They're downright rare on everything except late model diesel Super Duties.
I still haven't seen anything conclusive about what's causing these radiator failures. They're downright rare on everything except late model diesel Super Duties.
Senior User
Joined: Nov 2012
Posts: 156
Likes: 0
From: Danielsville
Jreinert, how frustrating. At least you noticed it and got it corrected.
I have been posting in another thread too and just wanted to share this information here as well. I was able to pick up a new Ford radiator for $540 from my dealer. The radiator has a 2 year, unlimited mile warranty regardless of who installs it. I went this route because I can buy 2 of these before I purchase one Mishimoto if it's outside the 2 years. I would like the Mishimoto if I haven't seen the leaking post here and in other forums over the internet. And if Ford actually does something to correct the problem or compensate owners, it may be easier as long as I have my receipt. We shall see.....
I have been posting in another thread too and just wanted to share this information here as well. I was able to pick up a new Ford radiator for $540 from my dealer. The radiator has a 2 year, unlimited mile warranty regardless of who installs it. I went this route because I can buy 2 of these before I purchase one Mishimoto if it's outside the 2 years. I would like the Mishimoto if I haven't seen the leaking post here and in other forums over the internet. And if Ford actually does something to correct the problem or compensate owners, it may be easier as long as I have my receipt. We shall see.....
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smashclash
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Dec 4, 2010 10:00 PM