Crappy Coil

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Jan 18, 2014 | 02:57 AM

#11

brad75raiders

Road Warrior

Joined: Aug 2007

Posts: 1,557

Likes: 66

From: Oakdale Ca.

I had just the opposite result. Crane hi4 took a poop ultuma running strong....

Jan 18, 2014 | 06:13 AM

#12

1997bagger

Seasoned HDF Member

Joined: Aug 2008

Posts: 5,070

Likes: 2,113

From: Ohio

Quote:

Originally Posted by machinehed

To check your coil ... coils falter as temp. rises . Coils fail as the connections of the miles of spun small wires in the coil loose connection due to temp. rises. A broken connection in this extreamly tight wind of wires will expand and contract with temps. and produce a open circute as the winding expands.

Good breakdown of coils and explains how a speed or engine position sensor fails, my Ultima coil lost a cylinder at idle and came in at 1200 engine rpm's cold or hot, probable bad connection and higher voltage pushed past it so as heat usually causes electrical failures, sometimes can throw a curve at ya.

Funny thing is my buddies Ultima coil was installed at the same time as mine and still going, but still wouldn't buy one.