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Adding Diesel Block Heater

20K views 26 replies 18 participants last post by  PSK31 Guy 
#1 ·
Anyone out there buy a diesel, and then realized the block heater is not on their unit?

Well, this guy did, and it bugs me.

Does anyone know if the block heater is already installed and we just have to buy an expensive cord and plug it in? Or is it a little more extensive?
 
#6 ·
It is on the passenger side, about ⅓ of the way back, and down very low. You can only access it from the top, and need long arms to reach it. You probably can't even see it without using an extension mirror. I helped V-tail find his - it was not like mine, where the cord was up on top, they coiled his right by where it attaches. Just look at the block right at the bottom.
 
#9 ·
Thanks for the pics, that really helps. I found it last night and tried to get at it this morning but my arms are too big. I can get about an inch or so away from it coming in from the top. I tried removing the power dist box and the relay that are right there to gain more clearance but I couldnt get the box the power dist center sits in to come loose. Found 2 nuts holding it in but it still wouldnt come out.

Guess I will have to pull the front tire and see if I can go in thru the wheelwell.
 
#10 ·
NEW 2007-up JEEP GRAND CHEROKEE ECODIESEL BLOCK HEATER CORD, V6 3.0L CRD DIESEL ENGINE,COLD START

This block heater cable is used so that you can warm the engine for easy starting in cold weather. The engine has the block heater installed, but many times the dealers did not order the engine block heater cable with the trucks. Heater cable is 5 feet long.

The heater cable plugs into the block heater which is in the middle of the block underneath the passenger side exhaust manifold. There should be an orange cover on it that will need to be removed to access to the block heater. Easiest access to the block heater is from crawling underneath the truck on the passenger side behind the front tire.


NOTE: PLEASE MAKE SURE THAT YOUR JEEP HAS THE BLOCK HEATER ELEMENT INSTALLED IN THE ENGINE, THEN THIS CORD CAN PLUG IN DIRECTLY TO THAT HEATING ELEMENT. HOW TO SPOT THE HEATING ELEMENT IS NOTED ABOVE. IF IT DOES'T HAVE THE ELEMENT, THAT WILL NEED TO BE PURCHASED AS WELL AS THIS CORD.


$29 with free shipping, I have sold many of these on eBay.

Thank you, Jack

JS3 Motorsports
JS3@Q.com
 
#11 ·
NEW 2007-up JEEP GRAND CHEROKEE ECODIESEL BLOCK HEATER CORD, V6 3.0L CRD DIESEL ENGINE,COLD START

This block heater cable is used so that you can warm the engine for easy starting in cold weather. The engine has the block heater installed, but many times the dealers did not order the engine block heater cable with the trucks. Heater cable is 5 feet long.

The heater cable plugs into the block heater which is in the middle of the block underneath the passenger side exhaust manifold. There should be an orange cover on it that will need to be removed to access to the block heater. Easiest access to the block heater is from crawling underneath the truck on the passenger side behind the front tire.

NOTE: PLEASE MAKE SURE THAT YOUR JEEP HAS THE BLOCK HEATER ELEMENT INSTALLED IN THE ENGINE, THEN THIS CORD CAN PLUG IN DIRECTLY TO THAT HEATING ELEMENT. HOW TO SPOT THE HEATING ELEMENT IS NOTED ABOVE. IF IT DOES'T HAVE THE ELEMENT, THAT WILL NEED TO BE PURCHASED AS WELL AS THIS CORD.

$29 with free shipping, I have sold many of these on eBay.

Thank you, Jack

JS3 Motorsports
JS3@Q.com
What's the easiest way to reach the plug to install it?
 
#20 ·
No, there's no switch to turn it on. usually its not plugged in unless its below 32F. I usually don't plug it in unless its below 20F. It must be plugged in for at least 2-3 hours to receive the benefit of it warming up the engine block in turn allowing for heat much quicker. Generally they are kept plugged in over night. In really cold areas when its well below 0F then it definitely helps to keep the anti-freeze from freezing. Always remember to unplug it before driving off nothings more hideous then someone driving down the road dragging an extension cord because they forgot to unplug their block heater.:D:thumbsup:
 
#22 ·
Been down to -15F with it... never plugged it in and I do have the block heater and cord.... I "could" do it, but don't really want to mess with hooking and unhooking it when its that cold outside (or forgetting its plugged in). It has always started and this diesel warms up faster than any other I've owned. More concerned with frozen DEF.
I use a little power service in the winter fuel mix, but other than that have had no other cold weather problems....
 
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#25 ·
Dont worry about frozen DEF. Most of our trucks use it and we never had an issue caused by frozen DEF. According to the Cummins product data, DEF will begin to crystalize and freeze at 12f. We see that regularly in the winter and it never has prevented them from starting The pickups and larger trucks all have heated DEF tanks and piping that start warming the system when the engine runs.

From my read of the Jeep diesel supplement and talking to our shop mechanic, the GCED is similarly equipped.
 
#23 ·
So I have a random question for those in the know. I have a 15 Eco and have yet to run the cord. I plan to do it this winter. My question however is the voltage for these block heaters. While I purchased my Jeep in the States I'm in the military and now live overseas. The voltage here is 220. I was wondering if the block heater is dual voltage? Thanks
 
#24 ·
No, the NHK option is single voltage only (110-115), intended for the US market. While it is quite possible to convert foreign power, before making any equipment investment, determine if you're going to really need to use a heater, and what/where the available power source will actually be. I'm having a hard time imagining where overseas you could take your POV that would justify all this additional expense and aggravation.
 
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