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Old 12-08-2010, 07:22 PM   #11 (permalink)
PrivatePilot
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Quote:
Originally Posted by unholylyght View Post
i know on my truck specially if i leave it plugged in overnight. the block will literally feel warm. just touching the intake (furhtest thing from block heater i could find) its considerably warmer than the outside temp. and i had hot heat just from starting it.
I don't doubt it makes the engine warmer overall being plugged in all night versus just a few hours before startup, but the main point behind a block heater is to ensure the engine starts, not that you get cab heat quicker.

The latter is nice though, I'll agree, but it's not worth the few dollars in electricity every week to me personally - my truck starts to blow warm air after only a few blocks even after being plugged in only a few hours. Most important to me is that it starts to begin with.
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Old 12-08-2010, 07:28 PM   #12 (permalink)
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I would check the electrical cord/plug that runs to element for continuity, etc, before condeming the heater(element) .
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Old 12-08-2010, 07:36 PM   #13 (permalink)
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I removed all of the corrugated plastic sheathing covering the wire to the heater and visually it shecks out. No dry rotting or cracking in the insulation. Of course I know that doesn't always mean the copper is in tact but without removing the heater there is no way to check continuity at the heater itself.

Private Pilot, I agree with your observation about electricity. I'm not at all concerned about heat at startup. I want mine to warm just long enough that my starter isn't strained. I'm still going to let it sit and warm up before driving it anyhow and mine also gets up to normal op temp very quickly.
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Old 12-09-2010, 09:14 AM   #14 (permalink)
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Just a quick 2c, when I plug my block heater in, I a can hear what sounds like a searing noise. Like when you start your coffee pot, the sound of boiling water.
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Old 12-09-2010, 01:18 PM   #15 (permalink)
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Thanks Ohio! I listened closely because any heater element should at least make a humming sound. Go Bucks
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Old 12-09-2010, 01:32 PM   #16 (permalink)
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The way I tell if mine is working is to listen to the plug when you plug it in - you'll usually hear a little crackle/zapping noise as continuity is made when it starts to draw power, and if it's consuming power, it's working.
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Old 12-09-2010, 02:02 PM   #17 (permalink)
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Primo,

I had a stock block heater on my old engine, I don't have that one anymore but when I replaced my engine I pulled the old one to have a look inside. My power cord had a 3 prong 90 degree female plug that attached to the freeze plug style heater element in the block (male connections on it). Mine had a lot of corrosion on the contacts. It worked but it was corroded. You should be able to reach in over the wheel and under the manifold to unplug that from the element. You may have to pull the wheel to get in there. Then you could check for continuity on the element. You can check the wire for continuity to find out what pins are hot, neutral and ground.

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Old 12-09-2010, 03:44 PM   #18 (permalink)
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ahhh I see! So the connector will come off. When I was in there with a flashlight I didnt think it was removable but I understand what you're saying about the 90 degree female plug and come to think of it... it could very easily be the same style connector because I'm 99% certain it's the original heater. I will definitely need to take off the wheel because it was all I could do to wedge myself in there enough to get a couple fingertips on it to feel temp.
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Old 12-09-2010, 05:38 PM   #19 (permalink)
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Its extremly rare for the heater to go bad. normaly just the cord. you can get replacment cords at any good auto parts stor. the KATs cords will plug in on your stock block heater.
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Old 12-09-2010, 06:17 PM   #20 (permalink)
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I can hear both my block heater's working.

My pickup's must be possessed as it hisses like crazy and the dash gauge will read just over 160*F(lowest point is 160*F) after being plugged in all night.

The Blazer's block heater works(i can hear it hissing), but i don't think it's as strong as it should be. The coolant crossover gets warm, compared to outside temp but the gauge shows no difference with or without block heater.

However the cold advance temp switch does kick off much sooner with block heater usage so i know it's doing something.
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