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Water vs Alternator?

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Old Dec 23, 2010 | 12:48 AM
  #1  
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Default Water vs Alternator?

Im sorry if this has been covered before, i did a quick search for it and didnt really find anything but is it okay to get your alternator wet I hear absolutely not, and i hear its fine as long as you dont turn off the engine in water? crossing a creek tomorrow and this would be very helpful for that haha
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Old Dec 23, 2010 | 01:11 AM
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Originally Posted by offroad bandit
Im sorry if this has been covered before, i did a quick search for it and didnt really find anything but is it okay to get your alternator wet I hear absolutely not, and i hear its fine as long as you dont turn off the engine in water? crossing a creek tomorrow and this would be very helpful for that haha
Take a jug of clean water with you, and maybe a can of "no-flash" electrical cleaner.

If the water is dirty, trickle some clean water over the thing (with the engine running, so be careful) to flush it out. Leave it run so it dries out.

If it's fine silt or something, shut down and blow it out with the no-flash. Then restart and let it dry out.
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Old Dec 23, 2010 | 01:25 AM
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thanks man!! its a pretty clean clear river but i'll check advanced for that "no-flash" just in case!
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Old Dec 23, 2010 | 02:00 AM
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ive dunked mine TONSSSSS of times
if ur really that concerned, maybe bring a extra alt??
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Old Dec 23, 2010 | 02:45 AM
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definitely dunked mine before. the engine starts with the battery, so i doubt that even shutting it off can harm anything. just make sure your battery is good, because water reduces alternator current.
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Old Dec 23, 2010 | 11:55 AM
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Originally Posted by Char92dj8
ive dunked mine TONSSSSS of times
if ur really that concerned, maybe bring a extra alt??

ehh, my recent christmas expenses have reduced my ability to get an extra alt
fail.
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Old Dec 23, 2010 | 10:41 PM
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Originally Posted by Tural
definitely dunked mine before. the engine starts with the battery, so i doubt that even shutting it off can harm anything. just make sure your battery is good, because water reduces alternator current.
True - but shutting it down right away and letting it cool off on its own means it doesn't get dry - which means the springs behind the brushes (that push them into the comm rings...) rust, get weak, and break.

Then your alternator don't work.

That's why I say to leave it running for a bit (20-30 minutes, if possible, at least) to heat-dry the internals. Especially those damned springs!
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Old Dec 23, 2010 | 11:11 PM
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Originally Posted by 5-90
True - but shutting it down right away and letting it cool off on its own means it doesn't get dry - which means the springs behind the brushes (that push them into the comm rings...) rust, get weak, and break.

Then your alternator don't work.

That's why I say to leave it running for a bit (20-30 minutes, if possible, at least) to heat-dry the internals. Especially those damned springs!
good point. but i was referring to the possibility of an instant alternator failure or the vehicle not starting back up if you dunk it.
figure if you were just in 3ft of water, you will need to drive out of it anyway.
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Old Dec 23, 2010 | 11:19 PM
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I still wonder why these auto makers put them so low. Toyota did the same thing with the alt on the 22re
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Old Dec 23, 2010 | 11:57 PM
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got postponed today... but going swimming tomorrow for sure! i'll try and get some pics and maybe upload a vid or somethin.
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