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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 11-05-2005, 02:16 PM   #1 (permalink)
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replacing block heater

After my truck was plugged in for a few hours yesterday (it was 10 outside) I reached under and felt around the block heater and it was cold ???? I havent checked the wiring to see if I am getting power to the plug yet, but if there is how hard is it to replace the block heater ???? do I have to drain the oil ???? I really don't want to anything, I's to bloody cold out and my truck wont fit inside.
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Old 11-05-2005, 03:05 PM   #2 (permalink)
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Re: replacing block heater

I would first check resistance in the cord and element first. I have seen many cords go bad before the elements do.

If the element is bad, remove the cord and loosen the element. Attach a wet/dry shop vac to the rad. cap and turn it on. The vacuum will keep the coolant in the system as you remove and replace the heater element. You will probably lose less than a cup of antifreeze using this method.
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Old 11-05-2005, 05:16 PM   #3 (permalink)
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Re: replacing block heater

Check the cord. Mine went bad right near the plug. Cut wire and replaced with new plug (Home Depot). Good as new! [img]/ubbthreads/images/graemlins/cool.gif[/img] [img]/ubbthreads/images/graemlins/cool.gif[/img]
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Old 11-05-2005, 07:05 PM   #4 (permalink)
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Re: replacing block heater

I agree with everyone else, I have seen more cords go bad than heaters. I have had to replace 2 myself over the years. Although I did have to replace the heater on my 94 and I wish I had known about the shop vac trick then. Even after draining, I still took a bath in anti-freeze. [img]/ubbthreads/images/graemlins/frown.gif[/img]
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Old 11-05-2005, 07:09 PM   #5 (permalink)
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Re: replacing block heater

Don't know if you use ebay but check this out http://cgi.ebay.com/ebaymotors/Engin...11457216QQrdZ1
Could save a couple of dollars on the replacement parts.
Good luck
Ed
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Old 11-05-2005, 10:17 PM   #6 (permalink)
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Re: replacing block heater

Thanks for the info....
If it gets above 0 tomorow I will take a closer look at it....

Buddy_M wouldn't a wetvac suck the fluid out of the radiator ?????
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Old 11-05-2005, 10:37 PM   #7 (permalink)
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Re: replacing block heater

If you just stick the end of the hose in the opening, but not far enough into the fluid and block the opening with rags, it will not suck out any fluid. I have also done the shop-vac trick to replace bad drain plugs and gaskets on engines without losing a drop of oil.
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Old 11-06-2005, 12:04 AM   #8 (permalink)
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Re: replacing block heater

xdodge,

I agree about the cord. Mine went bad right at the plug. Wires were broken, but looked good on the outside. NO HEAT (and no GPR) so took 20 min to get it fired up at around zero.

Go by West Marine and buy a Marinco Charger inlet, then truck on out to Eagle River, and I'll help you install it. The nose of your truck will fit in my garage, and I have the hole saw to cut the hole in the bumper. Shouldn't take more than an hour.

PM me if interested.
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Old 01-11-2014, 07:09 PM   #9 (permalink)
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I'm new on here as a member but I look at this site a lot for tips and pointers. Today I tried the vacuum trick to change my block heater on my 1999 ford f250 7.3 and when I pulled the heater out it sucked out all of my coolant before I could get the new heater in. I don't know if I done it right or what. I just put the vacuum hose on top of the radiator, the hose fit perfectly around the neck but it didn't work for me.
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