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Old 12-06-2008, 01:40 PM   #1 (permalink)
75crew
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Block heater replacement

Hey guys. I've got a heater that sounds like it's working but doesn't do squat. Is this a simple thing to replace with another one from the dealer? I understand I'll lose a whack of coolant. Can it be reused or buy some new? Anything to know about bleeing the cooling system or is it pretty simple on these trucks. I'm quite mechanically inclined just want to avoid any surprises.

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Old 12-06-2008, 11:44 PM   #2 (permalink)
modified
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Check the electrical cord. The heater elements typically don't fail.
A good element measures about 11 ohms with a VOM.
Remove passenger front wheel well liner, jack under frame or remove front wheel for easier access.
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Old 12-07-2008, 11:15 AM   #3 (permalink)
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Thanks Modified. Will try that first.
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Old 12-07-2008, 03:16 PM   #4 (permalink)
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You will lose coolant but if you drain the radiator first it shouldnt be too bad, and I think near the heater element is a block drain plug, might be covered with yellow paint you can remove that to drain the block too.

If you can drain the coolant without getting it contaminated with other crap you can reuse it.

After you put it back together there is a small vent screw on top of the thermostats housing that you can remove while you fill the overflow back up and that will help "burp" the engine, after you get coolant out of there put the screw back in and fill till full and then keep an eye on it for a few days in case it goes down some more.

But like modified said check the cord first which you an unplug from the element and get a new one if it's bad.

DD

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Old 12-07-2008, 04:43 PM   #5 (permalink)
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I had a problem with mine to,but I just replaced the cord and now it's working great.
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Old 12-08-2008, 02:57 AM   #6 (permalink)
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Ok first off no I haven't look all over my engine bay yet, but I haven't had need to look as I live in Southern Cali, and it's cold at night when it's in the 50's. I bought my truck in Arizona, and will be parking it in Oregon while I'm on deployment. My question is. Do all DMax engines come with a block heater, or is that something you get as an option?
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Old 12-08-2008, 08:46 AM   #7 (permalink)
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DinoKiller.............I think they all come with one, so look around the air cleaner. The cord might be coiled up and tucked in someplace if it's never been used.
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Old 12-08-2008, 06:19 PM   #8 (permalink)
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Quote:
Originally Posted by DinoKiller View Post
Ok first off no I haven't look all over my engine bay yet, but I haven't had need to look as I live in Southern Cali, and it's cold at night when it's in the 50's. I bought my truck in Arizona, and will be parking it in Oregon while I'm on deployment. My question is. Do all DMax engines come with a block heater, or is that something you get as an option?
Don't know if it's an option, but if you have one, look at picture below, (thanks to Kennedy Diesel).
Element is mounted in block just ahead of passengerside motor mount.
http://www.kennedydiesel.com/dmaxblockheater.html

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Last edited by modified; 12-08-2008 at 06:19 PM.
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Old 12-08-2008, 07:53 PM   #9 (permalink)
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Thanks I'll have to look at that when I get home from work, or this weekend.
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Old 12-08-2008, 08:56 PM   #10 (permalink)
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About what temp does the block heater run at???
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