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What Temp Do You Start Using The Block Heater

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Old Dec 4, 2007 | 12:51 PM
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What Temp Do You Start Using The Block Heater

My Truck Stalled This Morning At First Start Up. Its Only 40* In The Morning Here. How Cold Do You Guys Let It Get Before Plugging In Your Trucks?
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Old Dec 4, 2007 | 12:59 PM
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From: Belvidere, NJ
I usually put mine on a timer to turn it on 2 or 3 hours before I leave in the morning once the temps are consistently in the 20's overnight. Makes for a happier engine and I get cab heat faster.
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Old Dec 4, 2007 | 01:00 PM
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What is your idle at? It should be at 850rpms or so when warm and in drive with the ac on. I would guess that yours is a little low.

If I have the choice, I will plug in once it gets below 20 but at school, I don't have a place to plug in. My truck hasn't actually been plugged in for 2 years now and it has seen lots of sub zero starts. Once it fires, it has never stalled on me.
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Old Dec 4, 2007 | 01:08 PM
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Mine will stall on me also if I dont let it warm up. I think it has more to do with my automatic tranny than the engine. The transmission is REAL sluggish in the morning when it is cold. I leave mine plugged in all night if it is below 50*
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Old Dec 4, 2007 | 01:30 PM
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Originally Posted by Txwelder
I leave mine plugged in all night if it is below 50*
Im not knocking you but thats crazy. There no reason to plug in when its above 30 degrees, IMO.

And we wonder why power costs so much. Plain and simple, DEMAND.
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Old Dec 4, 2007 | 01:58 PM
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Dr. Evil is pretty much dead on (although electricity at night is cheap on the market, consumer rates are averaged over total consumer demand, blah blah blah blah blah)... a timer is even cheaper.

There isn't much point in plugging in until the freezing point, IMHO. If it is convenient and you won't be burning a bunch of power (TIMER), an hour or two of block heater between 30F and 40F or so will still make a noticeable, though minor, difference.

...but that might actually be my oil heater.
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Old Dec 4, 2007 | 02:14 PM
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My 97 has a dodge rebuilt motor when dodge did the rebuild they did not reinstall the block heater assuming I would stay here in OK. Worng!!!!! I spent all winter 01 in minnesota with no block heater it started everyday but one. It was well below 0 and hadnt been started for a week starter dragged really hard I threw two new batteries in and she started right up after cycling the grid heaters a few times. I think pluging one in definitely helps but it isn't necessary if everything is in good working order. Just my .02
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Old Dec 4, 2007 | 02:17 PM
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From: The Great White North
No doubt its much easier on the truck when its been plugged in. That being said, I have started both my trucks in minus 20+ temps with no problems.
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Old Dec 4, 2007 | 02:20 PM
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I agree it is somewhat useless, but it does help in the morning to get it going. I dont do it because the truck wont start at all, I plug it in because it wont start with the remote starter if it is that cold out. For whatever reason the remote starter doesnt ensure the motor starts everytime.
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Old Dec 4, 2007 | 02:39 PM
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From: Skiatook OK currently Pecos TX
Originally Posted by Txwelder
I agree it is somewhat useless, but it does help in the morning to get it going. I dont do it because the truck wont start at all, I plug it in because it wont start with the remote starter if it is that cold out. For whatever reason the remote starter doesnt ensure the motor starts everytime.

I hope my post didnt sound as if I felt plugging one in was useless.
I was just explaining my experiences I would have loved to have been able plug mine in. It just wasnt an option.
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Old Dec 4, 2007 | 02:58 PM
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There no reason to plug in when its above 30 degrees, IMO.
Must be some reason why Cummins recommends plugging in below 40* F? (That's on the 24v. Can't believe # of valves make a big difference??)
Most of my big rig customer use that # as well. Leads me to believe there must be something to it.

RJ
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Old Dec 4, 2007 | 04:02 PM
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From: The Great White North
Originally Posted by RowJ
Must be some reason why Cummins recommends plugging in below 40* F?
Im curious where it says that - I would like to see it in print. I thought it was 30 degrees. I will have to check my manual.

Anyway, like I said JMO.
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Old Dec 4, 2007 | 06:07 PM
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Originally Posted by Txwelder
Mine will stall on me also if I dont let it warm up. I think it has more to do with my automatic tranny than the engine. The transmission is REAL sluggish in the morning when it is cold. I leave mine plugged in all night if it is below 50*

After you start it, parking brake and shift it into N. If you have a stock tranny, the fluid does not circulate in P. Let it circulate and it will heat up quick.
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Old Dec 5, 2007 | 05:22 AM
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Yeah I do the N warm up but it is still sluggish. Might be the Lucas tranny oil in there, pretty thick. Anyhow, I also dont have a block heater anymore as the unit on the fender shorted out at some point and is a melted blob of plastic. Might have something to do with the remote start not working when cold. Anyone know how to repair that thing? I think infidel posted something about that at one point.
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Old Dec 5, 2007 | 07:41 AM
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Well, I just spent 40 minutes trying to get mine to start, and it's 32 out.

I normally plug it in below 40, but didn't last night.

Mine doesn't like to start below 35 if it wasn't plugged in.
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