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Topic Review (Newest First)
12-01-2011 08:20 AM
Texarcana
Block Heater

Block heaters are usually already installed so you won't have to worry about pulling a frost plug. What you will have to do if you want to have a block heater and the cord is not there is order the cord (80 bucks give or take) there will be a threaded cover over the plug on the block, Remove that and them attach your new cord and tighten the threaded collar. Run the cord down then towards the bumper. there should be holes in the fran along the way to attach the cord to, keeping it up out of harms way. Block heaters are very beneficial to extending the life of your motor as the posts above indicate. Plus you get heat in the cab much faster on those chilly days. Tex
09-19-2011 08:58 AM
demarpaint
Quote:
Originally Posted by kjeeper10 View Post
Have to check it, thanks!!

Expensive?
I don't want to break any board rules, Google Wolverine Oil Pan Heaters. They are about $50 or so last time I checked, its been a while. They work and work very well in fact. If you have an automatic transmission and live in EXTREMELY cold climates you can put one on the tranny pan too. Many automatic transmissions are programmed to stay out of OD until the ATF reaches a certain temp. I've noticed when its very cold it can take a mile or two after I've gotten my Liberty on the highway before it shifts into OD. I have a 5 minute drive before entering the highway. Warming the tranny fluid eliminates that. BTW I don't have one on the tranny pan.

Any of these engine heaters can be hooked up to a timer which would power them on a few hours before you plan on using the vehicle. HTH
09-19-2011 07:58 AM
kjeeper10
Quote:
Originally Posted by demarpaint

It does. Since I took my Liberty from dealers inventory I installed a Wolverine Oil Pan Heater. I did not want them pulling a freeze out plug to install a block heater. IMO that's the way to go for aiding in cold winter starts. It is at the lowest part of the oil pan, heats the oil, warm oil flows better than cold oil, heat rises, win, win IMO. Or a combo of the two a block heater and an oil pan heater for our friends who live in really cold places. It takes no time at all to install an oil pan heater, and they work very well.
Have to check it, thanks!!

Expensive?
09-19-2011 04:12 AM
demarpaint
Quote:
Originally Posted by kjeeper10 View Post
Huh... Seems like it would help the engine during the dreaded cold starts.
It does. Since I took my Liberty from dealers inventory I installed a Wolverine Oil Pan Heater. I did not want them pulling a freeze out plug to install a block heater. IMO that's the way to go for aiding in cold winter starts. It is at the lowest part of the oil pan, heats the oil, warm oil flows better than cold oil, heat rises, win, win IMO. Or a combo of the two a block heater and an oil pan heater for our friends who live in really cold places. It takes no time at all to install an oil pan heater, and they work very well.
09-18-2011 01:55 PM
kjeeper10
Quote:
Originally Posted by demarpaint
I have one in my van, it makes cold starts easier, and the heat and defroster work a bit faster when its cold out. For $35 IMO it is something worth it if you live in colder climates or want heat/defrost a bit faster on a cold morning. JMO
Huh... Seems like it would help the engine during the dreaded cold starts.
09-18-2011 01:00 PM
demarpaint I have one in my van, it makes cold starts easier, and the heat and defroster work a bit faster when its cold out. For $35 IMO it is something worth it if you live in colder climates or want heat/defrost a bit faster on a cold morning. JMO
09-18-2011 11:16 AM
tjt94 The best ones that I had in northern Montana were ones that had a circulation pump on them. My '76 Dodge with a 400 V-8 would always start when plugged in. The only exception was when it was 55 below zero. I was able to warm the plugs with a torch and it started right up.

On a side note, I had an '82 Ranger with the 2.8 V-6. It started at 50 below without a block heater. Slow crank but it started and ran fine.

I don't miss that kind of weather. Now I have to deal with 120 above though.
09-18-2011 09:08 AM
Chrispy On a side note, my 08 has the block heater, this really had me thinking, I picked it up used thru my dealer who I've worked with for some time, he informed me the Jeep belonged to a guy who lives in Florida, and came up to northern Michigan for a month or so each summer....so why have a block heater if he lives in Florida. Well looking over the window equipment sheet, I see the Jeep was first shipped to a dealer in Fargo North Dakota.....makes much more sence. Just thought it was kind of interesting....I know thanks for sharing.
09-18-2011 06:04 AM
bwlyon
Block Heaters

Just to post a response to those asking about the benifits of having a block heater on their Jeep. I will attempt to help as best I can, so here we go.

A block heater is an electric device that is used to warm or maintain engine coolant temperature when vehicle is not running. In reality, in the lower 48 states they really are not needed as our temperatures rarely get low enough to justify them as the gasoline engines with modern electronics and fuel injection start right up. On the other hand, in northern Canada and alaska where temperatures can drop to -20 to -50 degrees the block heater helps keep the coolant warm which in turn helps keep the oil warm. When the air temp drops to well below zero a few things happen: 1.The battery do not operate at full capacity and the engine cranks slow.
2. The oil "gets thick" sometimes it pours like maple syrup when cold or worse.
While the block heater will not improve the cold starting capacity of the battery; (a battery warmer will). The block heater will help keep the engine oil warm and thereby reduce friction and aid in the starting process in very frigid temperatures. As well in frigid temperatures, engine wear is reduced to engine components by getting oil to the vital components such as bearings, and valve train faster when the block heater is used.
In short, the block heat can help reduce engine wear on cold start up, get heat to the interior cabin of the jeep quicker, and aid extreme cold start up by reducing friction. Which can be a very good thing.

Finally, on a side note related to diesel engines, they are compression ignition engines and have no spark plugs to fire the air/fuel mixture. The added compression ratio of a diesel engine builds heat and increases cranking demand on the battery and starter. The added heat from a block heater helps the diesel starting process by what is listed in the previous paragragh as well as heating the combustion chamber, which aids in getting the air/fuel mixture to ignite and start the engine. Remember, diesels are compression ignition engines and the heat and compression is what causes the diesel fuel to spontaneously combust when the engine is cranked. Therefore, diesels are more susceptable to cold starting issues, and need block heaters even in the lower 48 States when temperatures drop much below 32 degrees. The modern diesels aren't as prone to cold starting issue, but the older ones can be very hard to start when temps get cold.

Hope this helps a bit.
09-18-2011 01:03 AM
OutlawJK
Quote:
Originally Posted by Slygrin
Found it! Like Bulldawgs said, nowhere near the battery, totally opposite side. They probably just didn't update the manual for the 3.6L. I wonder what else didn't get updated?

Here is where I found it, drivers side tucked down deep.

Pulled out and uncapped.

Ran it out to the grill.
Beat me to it
I found mine too
09-17-2011 10:56 PM
Slygrin Found it! Like Bulldawgs said, nowhere near the battery, totally opposite side. They probably just didn't update the manual for the 3.6L. I wonder what else didn't get updated?

Here is where I found it, drivers side tucked down deep.


Pulled out and uncapped.


Ran it out to the grill.
09-17-2011 10:18 PM
Bulldawgs Hi, I ordered mine with a block heater as well, that said in Canada the dealer orders it automaticly. I found the cord on the right side of the engine, tucked back in behind the firewall. I had to re-rout it to the front but it was no where near the battery.
09-17-2011 09:27 PM
OutlawJK I can't find mine either
2012 model
I ordered it
Going to look at engine block in a few
09-17-2011 09:22 PM
kjeeper10
Quote:
Originally Posted by Xgrunt

On those cold mornings it is kinda nice but not really necessary(;
Gotcha
09-17-2011 09:16 PM
Xgrunt
Quote:
Originally Posted by kjeeper10

Will it really benefit a DD and in a location that's rarely exceeds -0
On those cold mornings it is kinda nice but not really necessary(;
09-17-2011 09:11 PM
SylvanSahara yes they the engine/heater will warm very quikly on start up with the engine block heater, and for the price of the option i didnt have to think very much about ordering my car w/ one. I would imagine with the rare exception of some very cold climates you wont find them on many jeeps in dealer stock on the lots
09-17-2011 09:07 PM
kjeeper10
Quote:
Originally Posted by Xgrunt
Check your freeze plugs on the block. See if one inst wired up with a block heater. It actually fits into the water jacket and heats the block. In essence you get into a car that can throw heat from the start. ( now that is just an added benefit) really it keeps the antifreeze from freezing, oil from gelling up an so on. It doesn't attach to the battery at all
Will it really benefit a DD and in a location that's rarely exceeds -0
09-17-2011 09:03 PM
Xgrunt Check your freeze plugs on the block. See if one inst wired up with a block heater. It actually fits into the water jacket and heats the block. In essence you get into a car that can throw heat from the start. ( now that is just an added benefit) really it keeps the antifreeze from freezing, oil from gelling up an so on. It doesn't attach to the battery at all
09-17-2011 08:59 PM
kjeeper10 Where does it mount?

I could just google it but I'm lazy... And your all here
09-17-2011 08:53 PM
Peepers
Quote:
Originally Posted by kjeeper10 View Post
We had block heaters in the army vehicles being diesel. Never heard of one for a gas
engine though.
So,we are in CT I would assume our winters don't get cold enough for one to really benefit-or does it?
Its helped with my truck, but I've never seen it to cold to start a gas engine up here unless the battery is really old or under powered.
09-17-2011 08:47 PM
SylvanSahara i had them on my '94 and '97 Grand Cherokee and when i had to park out side on very cold winter nights i used the engine block heater(i have heard it actually only keeps the engine oil warm), in conjunction with a vacation/lamp timer and would turn on thelamptimer( heater) 3-4hrs before i was going to use the vehicle(so the heater wasnt running all night)
09-17-2011 08:29 PM
Slygrin I just went out and triple checked. No cord anywhere near the battery, or anywhere else for that matter. It's not an option that I would have picked, but like I said, it's listed and I paid for it. I'm thinking about calling the dealer and asking how much it would cost them to install it, then doing some horse trading. It was only a $35 option, but I would imagine it would cost them more than that to install one after the fact.
09-17-2011 08:06 PM
kjeeper10
Quote:
Originally Posted by Peepers
My diesel has a heater on it. It warms up part of the engine to allow for smoother starts when its really cold.
We had block heaters in the army vehicles being diesel. Never heard of one for a gas
engine though.
So,we are in CT I would assume our winters don't get cold enough for one to really benefit-or does it?
09-17-2011 08:06 PM
JC JK The plug is a good thing helps with keep the JK warm on cold nights. Should be tied up by the battery or close to it.
09-17-2011 07:59 PM
Peepers My diesel has a heater on it. It warms up part of the engine to allow for smoother starts when its really cold.
09-17-2011 07:57 PM
kjeeper10 How does that work and what are the benifits?
09-17-2011 07:31 PM
SylvanSahara it took me a second look to find the plug for mine when i got my '11
09-17-2011 06:23 PM
Chrispy Don't know about the 12's but my 08 has the cord coiled up right in front of the battery?
09-17-2011 05:44 PM
Redsand one of my friends had one on his tj, come to find out it was a canadian model
09-17-2011 05:41 PM
Slygrin
Missing block heater?

I've had my '12 Rubi for 2 weeks now. A couple of days ago I was under the hood checking it out and familiarizing myself to where everything was. They sure got everything packed in there pretty tight, not much spare room at all. Anyway, the paperwork says it has a block heater and for the life of me I can't find the cord. The manual says it's bundled in front of the battery tray, nope not there. I was just wondering if the 3.6L has it tucked away somewhere else and they just didn't update the manual. I want to verify it was installed or not before calling the dealer. Realistically I probably don't need it, but I paid for it.

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