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Coil Resistance Too Low?

Chamoix

By Chamoix
in BMW 2002 and other '02

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Chamoix Experienced

Chamoix

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Having ignition problems and decided to check my Bosch Blue coil resistance readings. Across the outer terminals (all leads disconnected) was 3.0 ohms. Previous Forum posts say should be 3.0-5.0 with lower being better. Then checked outer terminal to middle and got 8,180. Old posts say it should be 9,500-10,000 "but sometimes lower". My question - is 8,180 too low. Should I replace it?

'71 02 - parts car with not many parts left

'73 02 - weekend toy and money pit

'74 04 - sold in '91

'03 325iT - for trips and bad weather

'03 50cc Honda Scooter - for my 2 mile commute

'06 50cc Honda scooter - wife's commuter

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Napes Grand Master

Napes

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If it helps any, a BMW mechanic who worked several years at a dealership in the early 70s, then followed the chief mechanic from there when he left to open his own independent shop before leaving to open his own shop in the late 70s once told me he'd rarely, if ever, seen a coil failure in an '02.

 

They have happened, I guess, but probably more rare than some think.

 

Bob Napier

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