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Join Date: Oct 2001
Location: Arlington Heights, IL, USA
Posts: 637
Thumbs up Coil Test

Here is a simple test for your coil.

Thanks,
Ron D

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RonD 69912T
Old 07-07-2003, 01:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
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Join Date: Oct 2001
Location: Arlington Heights, IL, USA
Posts: 637
Here is a clearer image.

thanks,
Ron D

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RonD 69912T
Old 07-08-2003, 07:00 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
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Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
I'm digging up this old thread because I think I have a bad coil.
A Bosch #25, speced for my 2.7L.
Connected it and it ran rough, real rough.
Wired correctly, same as my other Bosch coil, which is working fine.
Checked the resistance and found primary at .735 ohms.

Secondary 746 ohms. Thats right, seven-hundred-forty-six ohms.
I've looked for a spec for this coil, can't find one.
I appreciate any help,

Edit: I didn't realize this was from the little read 912 forum.
I'm posting the same question on the 911 forum where it belongs.

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DOUG
'76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's.
'85 911 Carrera, stock, just painted, Orient Red

Last edited by 2.7RACER; 08-18-2006 at 10:04 PM..
Old 08-18-2006, 09:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
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