When to plug-in - Chevy and GMC Duramax Diesel Forum
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post #1 of 86 (permalink) Old 12-02-2009, 07:19 AM Thread Starter
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When to plug-in

I was just wondering when everyone starts plugging in there diesels in.I live in the Boston area and usaly only plugged in when very cold,only if I thought it would have trouble starting.But a guy I know starts just after Thanksgiving every day unless theres a warm spell to avoid cold start wear in the motor.Do you guys think it is worth the wear on heating element and expence of electricity to run every night to avoid cold start wear from happening.Mabey we should do a poll to see what everyone likes,if I only knew how.
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post #2 of 86 (permalink) Old 12-02-2009, 07:37 AM
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My rule of thumb is when it gets down between 32-23f(0--5c in canada) I start plugging in. It helps the cab air warm up faster and it is easier to start. Just use a timer and have it come on about 2-3 hours before you normally leave and you'll be fine. Some guys have reported a cel after having it plugged in all night due to coolant temp differing from engine temp iirc, so just use a timer and you'll be fine.

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post #3 of 86 (permalink) Old 12-02-2009, 08:51 AM Thread Starter
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Thanks I like the timer idea that sounds much economical and less wear and tear.An doing it from freezing and below is good to go?
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post #4 of 86 (permalink) Old 12-02-2009, 09:24 AM
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you can plug it in anytime its below freezing but by no means is it "mandatory"

Mine starts fine in -20* (f) without being plugged in...takes forever to get any heat though.

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post #5 of 86 (permalink) Old 12-02-2009, 09:26 AM
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just as an example here is my truck at -7* (f) starting up. The whining is the power steering pump.

sitting outside all night, not plugged in, ONE battery (everyone thinks they need two batteries to start/run), lower than stock compression etc.

http://www.youtube.com/watch?v=6iA72Mzv9ek

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post #6 of 86 (permalink) Old 12-02-2009, 09:46 AM
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That just looks way to cold for me. But I do live in the south, if it gets 25* here people thinke their going to die.LOL

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post #7 of 86 (permalink) Old 12-02-2009, 11:24 AM
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The bible says below 0 F / -18C and for a minimum of 4 hours, minimum of 8 hours if below that. If above that sometimes you can throw a P0181 which is a warning that the conditions are ripe for fuel to gel. To avoid the P0181, they say best thing if not too cold is warm it up running for a few. There is a few variables to set a P0181

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post #8 of 86 (permalink) Old 12-02-2009, 11:27 AM
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plug mine in pretty much everyday now since it's getting cold here. Was 39* this morning at my house and I park outside. Also rigged up a windter front cover.
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post #9 of 86 (permalink) Old 12-02-2009, 11:37 AM
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Quote:
Originally Posted by Hondarider552 View Post
plug mine in pretty much everyday now since it's getting cold here. Was 39* this morning at my house and I park outside. Also rigged up a windter front cover.
Seriously! how cold does it get out there?

I haven't dug for my plug yet this year..she has been sleeping inside the garage though and hasn't been out for about 3 weeks. Last year there was a couple nights here that I had it in the heated garage to thaw out and plugged in to keep it warm....it was bad for Indiana. -degrees for a few days in row.

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post #10 of 86 (permalink) Old 12-02-2009, 02:46 PM
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I plug mine in when its below 20. It starts fine without it, but I like having heat within a few minutes.

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