DavidM
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| posted on 20/9/08 at 02:30 PM |
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Testing a Coil
Hi,
Does anyone know of a way of testing a 12v coil with a multimeter, out of the car?
David
Proportion is Everything
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Macbeast
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| posted on 20/9/08 at 03:05 PM |
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Basic test is measure resistance between the two low-tension terminals which should give a couple of ohms. Between either low tension terminal and
high tension terminal is probably about 1000 ohms.
I'm just off to the garage so will check for you.
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Macbeast
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| posted on 20/9/08 at 05:42 PM |
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Tested
Between low- tension terminals 2.5 Ohms ( will vary depending on whether a ballast resistor type or not )
Between either low-tension terminal and HT terminal 7,500 Ohms (7.5K Ohms)
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DavidM
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| posted on 20/9/08 at 07:15 PM |
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Thanks,
Tested ok.
David
Proportion is Everything
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iank
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| posted on 20/9/08 at 07:21 PM |
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Though some only fail when they are hot - symptom is fairly obvious in that car runs fine for a mile or five and then runs rough and stops.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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02GF74
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| posted on 20/9/08 at 07:31 PM |
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^^^ wot he said.
lt side 3 ohm = non ballast
1.5 ohm = ballast
HT side is several K ohm. (5-10 K)
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DavidM
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| posted on 20/9/08 at 07:43 PM |
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I fitted a Bosch electronic distributor, but wasn't getting a spark, so was working my way through it. It turned out the wiring instructions in
the Wallage kent crossflow book are incorrect. Switched the wires round and it was fine.
David
Proportion is Everything
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