Engine Block Heater ?
Postmaster
Joined: Sep 2006
Posts: 2,598
Likes: 5
From: Maryland
Yes that was originally printed in the first edition of the coffee table book, but it has been proven false many times over. On past powerstroke platforms this was true, but I can vouch for the fact that not all 6.7s are equipped with the heater unit. I can't remember which states, but there are only a handful of "cold weather" states in which the block heater is standard equipment.
If I had to guess, the coffee table book was published long before the 6.7 went into production and never got corrected. To my knowledge, they have not published an update since it was released in early 2010. Hopefully in a few months we will see an update for the improved 2015 version of the 6.7.
Postmaster
Joined: Aug 2011
Posts: 4,637
Likes: 0
From: Roll Tide, Roll
Coffee table book is incorrect. only in certain states and the others are a option.they need to update the book.
Senior User
Joined: Jun 2006
Posts: 176
Likes: 0
From: Schaefferstown, PA
Don't know if it is valid on these trucks, but .............
On truck block heaters you can't run the engine with the heater on. The water flow around the element creates cavitation, and the momentary lack of coolant around the tube cause the heaters to burn out.
Found that out the pricey way on my twin Detroit 6-71 boat.
On truck block heaters you can't run the engine with the heater on. The water flow around the element creates cavitation, and the momentary lack of coolant around the tube cause the heaters to burn out.
Found that out the pricey way on my twin Detroit 6-71 boat.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
Haha, seen that many times. Hope its not true cause I use remote start and mine stays plugged in till I leave. Only done it a few times so far but it's still working, usually those heating elements burn out in seconds if they aren't submerged.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
I wish it was included and I would have purchased the cord already.
But sadly, the printing is wrong even for a 2011 Job1 truck.
Mine doesn't have the element.
What about those who remote start with it plugged in?
But sadly, the printing is wrong even for a 2011 Job1 truck.
Mine doesn't have the element.
What about those who remote start with it plugged in?
Posting Guru
Joined: Nov 2010
Posts: 1,783
Likes: 1
From: WY
I assumed he was from a cold weather place, instead of Texas. 
I haven't plugged in my 2011 f250 yet waiting for single digits.
In my 02/ 7,3 I would plug it in for 4 hours prior to starting, and it would fire right up. It made for easy starts and within two or three miles I would have heat. Noting you had to strain your ears to hear a faint humming sound when running.
The one thing that I found out quick with the 7.3 heater was that your first electric bill after plugging it in all night was a whopper. So bought a timer and set it for 4 hours and it worked fine.
I do believe from what I've read that the new heaters are smaller in output.
In my 02/ 7,3 I would plug it in for 4 hours prior to starting, and it would fire right up. It made for easy starts and within two or three miles I would have heat. Noting you had to strain your ears to hear a faint humming sound when running.
The one thing that I found out quick with the 7.3 heater was that your first electric bill after plugging it in all night was a whopper. So bought a timer and set it for 4 hours and it worked fine.
I do believe from what I've read that the new heaters are smaller in output.
Plugged mine in this morning. Only for an hour before I left. Outside temps -17c, engine temp when I started it was 48F. Engine temp when I got to work after 5km driving was 130F.
When started at these temps the idle is 1175rpm. Was still at that idle when I parked at work. Is this the normal idle rpm when the engine is cold?
When started at these temps the idle is 1175rpm. Was still at that idle when I parked at work. Is this the normal idle rpm when the engine is cold?
Don't know if it is valid on these trucks, but .............
On truck block heaters you can't run the engine with the heater on. The water flow around the element creates cavitation, and the momentary lack of coolant around the tube cause the heaters to burn out.
Found that out the pricey way on my twin Detroit 6-71 boat.
On truck block heaters you can't run the engine with the heater on. The water flow around the element creates cavitation, and the momentary lack of coolant around the tube cause the heaters to burn out.
Found that out the pricey way on my twin Detroit 6-71 boat.
Wonder what the OP found out?
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Postmaster
Joined: Sep 2006
Posts: 2,598
Likes: 5
From: Maryland
On the running the truck while the heater is on deal, I never had a problem with my 6.0. It was plugged in every day that temps were below freezing and quite often I would run out and start it in the morning and let it warm up 5 to 10 minutes before I left. I would usually unplug the heater as I got into the truck to leave.
I understand the concerns for cavitation, but with the thermostat closed and the engine at low rpm you aren't getting much circulation. I suspect that the element is in more danger of boiling the coolant away from itself than being exposed to air pockets from the engine running. I wouldn't lose any sleep over it!
I understand the concerns for cavitation, but with the thermostat closed and the engine at low rpm you aren't getting much circulation. I suspect that the element is in more danger of boiling the coolant away from itself than being exposed to air pockets from the engine running. I wouldn't lose any sleep over it!
Lead Driver
Joined: Jan 2008
Posts: 6,180
Likes: 83
From: Georgia
As soon as I ge ta day off to where I can I will let you know how it goes. Here is the installation instructions & part numbers I posted a couple of weeks ago.
6.7L Block Heater Install - DTS Articles - Articles - Articles - DTS
6.7L Block Heater Install - DTS Articles - Articles - Articles - DTS
Posting Guru
Joined: Nov 2010
Posts: 1,783
Likes: 1
From: WY
On the running the truck while the heater is on deal, I never had a problem with my 6.0. It was plugged in every day that temps were below freezing and quite often I would run out and start it in the morning and let it warm up 5 to 10 minutes before I left. I would usually unplug the heater as I got into the truck to leave.
I understand the concerns for cavitation, but with the thermostat closed and the engine at low rpm you aren't getting much circulation. I suspect that the element is in more danger of boiling the coolant away from itself than being exposed to air pockets from the engine running. I wouldn't lose any sleep over it!
I understand the concerns for cavitation, but with the thermostat closed and the engine at low rpm you aren't getting much circulation. I suspect that the element is in more danger of boiling the coolant away from itself than being exposed to air pockets from the engine running. I wouldn't lose any sleep over it!
As soon as I ge ta day off to where I can I will let you know how it goes. Here is the installation instructions & part numbers I posted a couple of weeks ago.
6.7L Block Heater Install - DTS Articles - Articles - Articles - DTS
6.7L Block Heater Install - DTS Articles - Articles - Articles - DTS
Cargo Master
Joined: Jan 2007
Posts: 1,945
Likes: 1
From: Wasaga Beach, ON
Back in the day when vehicles didn't come with block heaters, or they were an option, I used to install one of the circulation heaters that went into the heater hose. Is there any way to install one of these on the trucks? Haven't dug around under the hood to see where the hoses are.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
Back in the day when vehicles didn't come with block heaters, or they were an option, I used to install one of the circulation heaters that went into the heater hose. Is there any way to install one of these on the trucks? Haven't dug around under the hood to see where the hoses are.
Elder User
Joined: Jan 2008
Posts: 529
Likes: 0
Posting Guru
Joined: Jul 2013
Posts: 1,726
Likes: 2
From: Connecticut
I still have the inline coolant heater hanging in the garage from my 79 Bronco. Thought about putting in my 6.4 but with all the bad rads and coolant leak problems I decided not to. With my 6.7 having primary and secondary cooling systems with multiple rads, pumps and thermostats, I can’t see it being that effective.
Totally agree... And you never know what the computer will be recieving from the sensors, and screwing things up.