Checking impedance with a multimeter.

[Dtrom 10+ year member]

Not even sure how to word this...

How far away from the original coil impedance means the coil is still good?

If I check the coil on a D2, what range of numbers on the meter will show that the coil is still in good shape?

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[ThatChevyGuy 5,000+ posts]

in my testing usually they read about 1.4-2.6

 

[jteske88 10+ year member]

well figure how much the meter is off also, then take a measurement and minus that for an estimate.

 

[thundercat 10+ year member]

^ correct ive had d2 hifonics suns come new and read 2.5 and new American bass suns come and read 1.7

 

[Dtrom 10+ year member]

well figure how much the meter is off also, then take a measurement and minus that for an estimate.

Are the meters always off by a lil bit?

 

---------- Post added at 03:58 PM ---------- Previous post was at 03:57 PM ----------

 

in my testing usually they read about 1.4-2.6

What would a bad coil read, roughly?

 

[jteske88 10+ year member]

well it depends on the meter. i always put my probes together to see what the imdependace is on the probes themselves.

 

[maylar 10+ year member]

Coils don't usually short or change resistance. When they burn they cause the cone to bind and you can feel it when moving it with your fingers. An open coil will be obvious on the meter. Applying a tolerance to the reading doesn't mean much.

 

[THATpurpleKUSH 5,000+ posts]

touch leads together, subtract that reading from what you get, compare that to orignal specs posted in owners manual

 

[Julian 10+ year member]

You cannot read impedance with a multimeter, you can however read DC resistance. DC resistance will always be off of what the actual impedance is, usually a few .10's.

Aka D2's will actually read somewhere around 1.7 depending on atmospheric pressure, temp, etc. D1's will read somewhere between .7 and 1 ohms.

 

[Flex68 10+ year member]

You cannot read impedance, you can however read DC resistance.

'zackry