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Old 10-23-2017, 03:31 PM
MTP55 MTP55 is offline
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Block Heater

So the block heater on this truck hasn't been used in about three years. Plugger it in just now in the shop and it snapped under the truck. I quickly unplugged it and crawled under for a look. I saw this. Aside from external oil cooler leaking that I'm fixing next week. I saw that brown kind of burn mark on the filter housing where the heater goes in. Another forum said yup normal for that spark snap sound. Didn't seem right to me. Could plugging it in and having that happen ruin anything on the engine?
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Old 10-23-2017, 03:33 PM
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Old 10-23-2017, 04:24 PM
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It won't ruin anything on the engine. Worst case, the heater won't work. You can buy a new heating element, but you have to drain the coolant or at least swap it REALLY fast.
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Old 10-23-2017, 04:42 PM
DieselDenny DieselDenny is offline
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Same story on mine,

Just pull it gingerly at first and finish like a high school freshman. Be quick with the thumb and have everything ready to go in. You'll lose a little but speed is essential. Otherwise drain first. Leave all caps in the cooling system in place, otherwise wear a shower curtain. JS


I bought and zipped loom to cover the entire wire to the nose and bought an end to put on the male and dielectric greased and bagged it for the waiting periods between use.

Plug and play!

Denny
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Old 10-23-2017, 04:43 PM
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If the cord's in bad enough shape to do that (loose terminal tension), you will need a new cord too.

The problem with high resistance faults like that is you will either end up with a non-functioning block heater (best case) or a fully engulfed pickup/garage due to fire (worst case).

Pull the block heater and replace the cord too. Like Andy said, in and out QUICKLY. If you pull the reservoir cap and then reinstall it, you'll vent any pressure and then cause a very slight vacuum to be drawn when pulling the heater making it flood your driveway a little less quickly.
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Old 10-23-2017, 04:47 PM
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Fix it when you do the oil cooler. With cold weather coming you need both working correctly.
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Old 10-23-2017, 04:58 PM
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I replaced mine last fall. I used gasolina on the threads of the new one, plugs removed on old and new heater. I used a shop vac on the degas bottle neck I then loosened and removed it...very little fluid loss. But I didn't waste any time switching them either....
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Old 10-23-2017, 05:01 PM
Walleye Hunter Walleye Hunter is online now
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Quote:
Originally Posted by Whitey Ford View Post
Fix it when you do the oil cooler. With cold weather coming you need both working correctly.
^^^^^^^^^This right here, you can do it on the bench while you have it out to do the oil cooler.
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Old 10-23-2017, 08:00 PM
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That is the plan. Drain all coolant from radiator and block and pull oil cooler and block heater. I knew we never had a tractor snap and spark before so I figures it wasn't quite right.
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Old 10-24-2017, 08:38 PM
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So should I be expecting to just replace the $120 cord or the cord plus the element itself?
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Old 10-24-2017, 09:11 PM
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Complete set up, or you mitt have to do it again.
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Old 10-24-2017, 09:38 PM
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Quote:
Originally Posted by MTP55 View Post
So should I be expecting to just replace the $120 cord or the cord plus the element itself?
$120 for just the cord?

Here's a whole kit, BOTH Made in the USA!

1500W Ford 7.3 L Powerstroke Diesel Super Powerful Engine Block Heater F 250 350 http://r.ebay.com/IYbVqb


1500W Engine Block Heater fits Ford 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged http://r.ebay.com/1hnlUh


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Old 10-25-2017, 08:04 AM
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Well that answered my next question. I'll check it out. $120 was the Ford Motorcraft cord.
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Old 10-27-2017, 02:46 PM
SteveH-CO SteveH-CO is offline
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My IH dealer had a nice new cord with a much-better-engineered screw-down retainer for about $26. Check eBay or Amazon for cords - they are out there, for much less than Ford's piracy price.
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Old 11-02-2017, 05:43 PM
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Hoping to reseal my oil cooler this weekend. The truck just had coolant put in this spring before I bought it. I have the receipt to prove it. When I drain it out of the block and radiator to do this job, do I need to flush the system?
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