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Old 03-26-2011, 04:13 AM   #1 (permalink)
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GRID HEATERS -- How to TEST

Is there a way to test your grid heaters. My "wait to start" light comes on, the voltmeter drops a few volts with new batteries & 4 new cables. The light is on for 15 sec, light goes off then I hear the relays disengage as normal. If I feel the intake horn it is only slighly warm. Is there a resistance value for the 2 grid heaters to test. Is there a DC Amp value that can be measured from the batteries while the heaters are activated ?
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Old 03-27-2011, 11:59 AM   #2 (permalink)
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The heater elemints are isolated from the actual block they are mounted in. So you will not feel much change in temp of the outer block.


Your grid heaters are about the same as a 1st gen. You can amp test them. A 1st gen pulls around 100 amp load when engaged.

You also can use an OHM meter. Being a resistence type hearter elemint. You will not see a high OHM reading. It will be towards the lower end of the scale. I couldn't find my spare grid heaters to test. You would most likely see less than 100 OHMs across the terminals.
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Old 03-27-2011, 01:51 PM   #3 (permalink)
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The heater grids on mine only measure about 2 ohms each. Seems like I have to cycle them 2 or 3 times to start it on cold days. I think they should only have to cycle once, perhaps twice Especially if it has a remote start. Has 2 new batteries & cables. Anyone have any ideas ??
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Old 03-27-2011, 02:24 PM   #4 (permalink)
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In real cold temps like you have in AB. Having to cycle a couple of times is normal.

About the coldest we see in Indiana is -20. At that temp I cycle twice and it starts no problem.

Mine will start at that temp without the grids. I just don't like staying on the starter that much.
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Old 04-07-2011, 07:23 AM   #5 (permalink)
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Grid heaters:
Elements are rated at 220-amps, the cold resistance would probably be around 0.1 ohm.

Unless if you test them using a decent DMM it would show as 0 ohms across the terminals. (short)

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