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91 Euro f3 electrical issues

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I am looking for the wiring diagram for the 1991 Malibu euro f3 skier. All of my gauges stopped working properly and the temp gauge is frozen at "high" temp. I disconnected the battery hoping to reset the gauges but that didn't work. Any suggestions or comments welcomed.

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@Muddy:  Your boat is of the simple wiring era, no ECU or electrical brain that needs a reset.  As for a wiring diagram, you can probably use any roughly pre '95 diagram or even something from a competing brand to get an idea of how it is wired, the engine brand should also have a useable diagram.  As noted, it is most likely a bad ground given you symptoms & you might check the ignition switch, the canon plug and the main switch panel ground.

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Thanks for the heads up on the ground wire possibility. Will check that out 1st. What is "computron" ? Is that the black box under the dash with the computer board? If so yes. Any suggestions or comments welcomed. Cheers.

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  • 2 years later...

on the euro f3 topic. I am having trouble with the neutral switch. Is there a relay from throttle to neutral switch? We are getting continuity but boat doesn't always start.

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Check the continuity when someone moves the throttle in the lockout detent.  If the continuity changes, then I would look at the adjustment on the shifter for the cable...maybe it's just slightly out of adjustment?

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18 hours ago, formulaben said:

I would look at the adjustment on the shifter for the cable...maybe it's just slightly out of adjustment?

Or the cable end nuts are worn out and are ready for replacement.

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