You are watching: How to test a block heater

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I established my block heater didn"t work, i don"t think it ever before did, considering it had a huge cut in along the frame. So, regardless of my initiatives in plugging the good ole 7.3 in, i never provided a second though that the block heater actually worked because I was making use of a programmable timer cord!I discovered even after splicing the cord to eliminate the damaged section, the block heater still didn"t work. Walk some analysis on FTE and tested the cord and element v a multimeter. Aspect was good, cord to be bad, ended up act this together a an initial attempt:
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I hooked the to the element and plugged in the extension cord, and also the element immediately started working. Just issue...short cord intended crawling under the truck/fender fine to plug in. I decided the van deserved the suitable cord, specifically after all the cold beginning it provided me without lot complaint. I looked top top Ebay etc, saw miscellaneous offerings native $30 USD and up for simply a three prong cord, i am in Canada and don"t like messing roughly crossborder Ebay stuff and also the money exchange, shipping/handling add to the wait didn"t interest me. Got the OEM cord native Ford in my hands in much less than 24 hours.
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i wasn"t also happy through the do in China part. My initial plug had actually "Made in Canada" on it. Because that the $180!!!!!!!!! price (no shipping, no handling, no duty, no wait + no lube) i was expecting a non-China product. Yes I might have spliced an expansion on the "short cord" and been ok, however I didn"t desire a jack leg looking cord and plug. Plugged that in to the element and also tested it:
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Good to go, had to line it through the chassis. Ns couldn"t discover a place for two of the developed in "Christmas Tree" fasteners behind the shock mount, yet I got thinking the exact same harness would certainly be for a 2wd truck as well, so holes can be different. Functioning outdoors -15C/5F was funny as well.

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So, test/check your block heater!1) It will sizzle or hiss once plugged it2) The top of the oil filter wherein the heater cord plugs in the engine will obtain warm3) The plug will snap/arc slightly if you plug the cord into an outlet slowly4) Multimeter will read about 15 Ohms as soon as you check on the two flat blades of the cord. I will be check this currently every fall prior to it it s okay cold!