Where is the 90amp fuse on Mercruiser

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10-20-2019 | 01:12 PM

#11

BUP

Banned

Joined: Jul 2011

Posts: 9,594

Likes: 45

From: Ft. Worth TX

And not all apps have the 90 fuse either

Its a poor design plus in a poor installed location and the quality of that fuse is below average.

04-05-2020 | 01:50 AM

#12

FJ96

Registered

Joined: Apr 2020

Posts: 1

Likes: 0

From: Germany

Quote:

Originally Posted by BUP

And that is a 90 amp fuse on its way out and if its an efi engine what a way to knock out the ecm. Just reporting what I see very clearly.

Dear Bup,
last autumn the orange cable from the alternator to the startor burned. Maybe a caused by a shortage. I'll now change wiring to go via an isolator.
But now to my questions:
-Do you mean the ECM can be demaged or the ECM will not work, if the fuse is broken. I expect there's no voltage anymore on the engine, if this fuse is broken.
-would you recommend to leave that fuse away or to replace it by a better quality fuse, maybe installed on a more maintenance friendly location?
Thanks and cheers
Frank