after coolant flush, block heater not working - Ford Powerstroke Diesel Forum
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Old 01-06-2012, 11:30 AM
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after coolant flush, block heater not working

Just like it says...never had an issue before. Now when I plug it in I don't get any kind of spark or anything. Can I check the two posts on the plug with the ohm setting on a multimeter? Or just continuity? Not sure if it's just coincidence that it happened after the coolant flush or if I did something...
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Old 01-06-2012, 03:37 PM
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did you drain block and knock wire loose?
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Old 01-06-2012, 03:45 PM
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Don't think so but I'll double check...
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Old 01-06-2012, 04:10 PM
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Quote:
Originally Posted by ParkCity.PSD View Post
Just like it says...never had an issue before. Now when I plug it in I don't get any kind of spark or anything. Can I check the two posts on the plug with the ohm setting on a multimeter? Or just continuity? Not sure if it's just coincidence that it happened after the coolant flush or if I did something...
Yes you can.

If you've got no continuity between the prongs on the plug you can, (with a lot of "nice" words cause it's tight in there), pull the plug at the heater element and test the resistance of the element. If you run a spare piece of wire from each of the prongs on the plug under the truck with you you can test the continuity of each wire in the cord. Now you know where the problem is, either in the heater or the chord.

Mine was in the cord so I looked to the plug first, I've had a few plugs die on me so it was the most likely problem. I cut it off and tested the wires for continuity again and they were good so I put a new plug on and it's working again. Actually just finished up this afternoon between calls at work!
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Old 01-07-2012, 07:03 AM
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Right on. Thanks man! I'll give it a try.
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