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Block heater timing

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Old Feb 1, 2007 | 06:20 AM
  #1  
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Block heater timing

How long do you plug in your 6.0? It has been single digits here lately. My truck is inside, but not heated. I plugged the block heater in and the lights dim a bit in the garage for a second or so! I ran it overnight Monday, and for an hour Tuesday. The truck still seems like it misses and bangs a bit either way. Any suggestions?

Thanks
 
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Old Feb 1, 2007 | 07:42 AM
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Are you sure you did'nt blow a fuse or trip a breaker when the lights in your garage dimmed?

We generally plug ours in overnight, it should make a noticable differance unless you have other issues.
 
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Old Feb 1, 2007 | 08:01 AM
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Mine also has a horrible miss and generally rough idle for about 45 seconds on a single digit or delow day. I'm only on the second day of block heater use as I just installed the cord and it hasn't been in the singles yet so I can't say that it has helped with how it runs right off. It did seem to turn and start a lot easier though. I almost think the rough idle is a result of the oil in the injectors being too cold to flow properly. The new ficm flash would address that. The manual says block heater needs to be plugged in at least 3 hours before starting for best results. You can plug it in all night but at 3 hours you're only looking at 21 hours of electricity a week. Overnight you're probably looking at over 60 hours of electricity a week.
 
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Old Feb 1, 2007 | 08:14 AM
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what a little electricity I plug in all night no problem
 
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Old Feb 1, 2007 | 08:29 AM
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Originally Posted by satcom40
what a little electricity I plug in all night no problem
I don't have a problem with using electricity but I don't like to spend my money when not needed. The block heater is only going to heat to a certain point. If it's going to reach that temp in 3 hours then there's no need to run it for 10. I imagine longer run times shorten the life of the element too. Anyway, according to a chart I came across assume electricity is 6 cents per kWh and the element draws 650 watts. At a 3 hour run per day it costs $3.50 per month, $11.70 at 10 hours, $16.40 at 14 hours and $28.10 at 24 hours.
 
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Old Feb 1, 2007 | 08:46 AM
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I have'nt used mine yet not that cold here yet . does it go off when it reaches warm up temp. so keeping it pluged in all night should not matter. only uses elec when needed?? does it have a thermostat built in.( also im going to give keith1984 my elec bill he can figure it out)
 
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Old Feb 1, 2007 | 08:49 AM
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Originally Posted by Keith1984
The block heater is only going to heat to a certain point. If it's going to reach that temp in 3 hours then there's no need to run it for 10.
Keith1984, prettty much i dont have a dog in this hunt. I wont plug mine up untell it gets down to 25. I dont know why i decided on that temp, i just did. I've only plugged mine up 3 times.
It might only take three hrs for the element to reach what ever temp, but how long will it hold it. I guess what i'm saying is if you leave for work at 5-6am you would have to wake up at 2-3 am to plug your truck up. or plug it up at night and unplug it before going to bed. I dont think it'll still be warm the next morning. I really dont think the differnce in electric cost will ever be seen. But i cold start sure will be heard everytime.
 
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Old Feb 1, 2007 | 09:03 AM
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There's no special electronics to switch it on or off or adjust the heat output. It's just like a soldering iron. You plug it in and it heats up until it gets to as hot as its going to get and stays there until you unplug it. The manual says block heater is required for starting at -20F or below and recommended at -4F. If you live in an area that doesn't really get that cold and you only use it a few times a year then plug it in all night, you won't notice the difference. If you live in an area where you plug it in every day for a couple months of winter then you notice a big difference. I bought a $15 heavy duty outdoor timer. I set what time I want it to turn the electric on and what time to turn it off. It turns on a little over 3 hours before I leave while I'm sleeping.
 
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Old Feb 1, 2007 | 09:35 AM
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Originally Posted by Keith1984
There's no special electronics to switch it on or off or adjust the heat output. It's just like a soldering iron. You plug it in and it heats up until it gets to as hot as its going to get and stays there until you unplug it. The manual says block heater is required for starting at -20F or below and recommended at -4F. If you live in an area that doesn't really get that cold and you only use it a few times a year then plug it in all night, you won't notice the difference. If you live in an area where you plug it in every day for a couple months of winter then you notice a big difference. I bought a $15 heavy duty outdoor timer. I set what time I want it to turn the electric on and what time to turn it off. It turns on a little over 3 hours before I leave while I'm sleeping.
You have it all worked out. Thats good for you.t like a soldering iron as soon as you unplug it it starts to cool down.
I know what the manual says thats why the first time it drop in the teens i did'nt plug it. Oh the next morning at $am when i started it up i wish i had. It sounded like it was coming apart when it finally started. I put a quart of oil on the porch just for giggles. At 30 degrees it was tring to pour peas out of a straw.
 
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Old Feb 1, 2007 | 09:50 AM
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Originally Posted by exiled
You have it all worked out. Thats good for you.t like a soldering iron as soon as you unplug it it starts to cool down.
I know what the manual says thats why the first time it drop in the teens i did'nt plug it. Oh the next morning at $am when i started it up i wish i had. It sounded like it was coming apart when it finally started. I put a quart of oil on the porch just for giggles. At 30 degrees it was tring to pour peas out of a straw.
Mine didn't come with the block heater cord. I put it in a few days ago cause the dealer seems to think 15w40 is perfectly fine for year round use. After starting it at -12 with no block heater and 15w40 in the motor I had a different opinion about that, lol. The 15w40 bottle states it's only good for temps down to 20. I think even 32 and below overnight it's not a bad idea to give it a little block heater time. That was the first and last oil change I've ever paid for them to do. Next year it's getting the 10w30 super duty oil or a full synthetic.
 
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Old Feb 1, 2007 | 11:50 AM
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I believe the Ford reccommendation is: 32+ 15W40, below that is 10W30 unless you tow.
Using a too heavy of oil will cause misfires/rough running.

Look in your diesel suppliment for the exact specs - as I'm at work.
 

Last edited by bigredtruckmi; Feb 1, 2007 at 11:54 AM.
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Old Feb 1, 2007 | 11:59 AM
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Originally Posted by bigredtruckmi
I believe the Ford reccommendation is: 32+ 15W40, below that is 10W30 unless you tow.

Look in your diesel suppliment for the exact specs - as I'm at work.
Yes, the diesel supplement list 15w40 preferred 30 up and acceptable down to 10 or whenever towing. 10w30 is acceptable from 90 down to 30 and preferred from 30 to -10. The motorcraft 15w40 bottles state to use 10w30 super duty oil below 20 degrees. I don't haul anything around in the winter except myself, the dog and a couple sand bags so 15w40 isn't the best for the truck in my opinion. Since the book claims it's required for towing I assume that's why they automatically put that in everything. No doubt it's hard on the motor in cold starts but it probably offers more heat protection when towing than the 10w30.
 
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Old Feb 1, 2007 | 12:47 PM
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Just remember, that block heater only heats the engine and what little diesel fuel is sitting in the secondary fuel filter on top of the engine. If its -10 outside then the fuel in the tank and lines is at -10. The HFCM has a fuel heater but it really doesn't do too much for the first minute or two after the engine starts up. Heavy duty diesel equipment designed for use in extreme cold have fuel tank heaters and insulated and heated fuel lines as well as engine heaters. Our block heaters help a lot, but the engine is still going to run a little raggy for the first 30 seconds to a minute after start up until the HFCM can do its job.
 
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Old Feb 1, 2007 | 04:44 PM
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If using electricity is such a big thing, then you should of bought a gasser.
 
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Old Feb 1, 2007 | 08:09 PM
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Originally Posted by cratemotor
If using electricity is such a big thing, then you should of bought a gasser.
Did you pay sticker price, a lofty documentary fee and tip the salesman when you bought your truck? When it's too hot in your house in the middle of winter do you open windows instead of lowering the thermostat? What's the issue with me trying to make the most of my money? If electricity was a big deal I wouldn't have installed the cord or even use the block heater. It WILL start in cold without the heater. It just makes it easier for the motor to be warm, same as it would with a gasser. There's nothing to gain running the element for 9 hours longer than necessary. The only thing that comes of it is shorter element life and more of your money to the electric company. If you live in Florida where there's an overnight cold snap twice a year than sure, plug it in all night. If you got to plug it in every night for 2 months and you want to spend 3 times more on electric than necessary then plug it in all night.
 
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