Show of Hands-HOw many people have had an MSD magnetic pickup fail???

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#15 (permalink)

05-19-2016, 01:16 PM

cdnus

CC Member

Join Date: Dec 2004

Location: toronto, ont

Cobra Make, Engine: 408w 500 h.p. 550 ft.lbs

Posts: 562

Not Ranked

Fluctuating tach is the box. Probably getting to hot. Is yours mounted under the hood?
I know this because mine was and when it got hot it would drive my fuel injection crazy because of the tach signal feeds the EFI?
Made changes to keep the box cool and problem went away. I replaced the box after solving the problem just in case it was internally damaged.
Hope this helps.
Craig

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