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Alternator/Voltage gauge problem, 5411 diesel
Hi, this is my first post,
I'm trying to decide if I need to purchase a new alternator for my Universal 5411 diesel engine, serial # 302296.
The voltmeter gauge on my instrument panel wasn't functioning when I purchased the boat. (1982 Catalina 27).
I overheated the engine, destroying the impeller and during that, the water temperature gauge quick working.
I replaced both the water temp gauge, voltage gauge, and impeller.
The engine and the water temp. gauge are fine, but the voltmeter pegs all the way to the right at 16 on my gauge.
I put a multimeter on the battery with the engine off and it read 12.79 volts.
When I started the engine, I checked it immediately and it was 12.44 and after about 6-8 minutes, it was still 12.44v. However, I've never had any problem keeping the battery charged.
I did notice that the first time I started the engine, after replacing the new gauges and impeller, the voltmeter gauge on the instrument panel appeared to work correctly for about 8 seconds, then pegged to the right and stayed there, even when I started the motor again.
Do you have an idea what might be going on?
Thanks for any help.
Last edited by Marcobowow; 12-16-2011 at 10:48 AM.
Reason: need to clarify a sentence