alternator life???
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Hotshot
Joined: Jul 2005
Posts: 11,933
Likes: 182
alternator life???
just wondering what kind of life others are seeing on the alternators. just to warn some--- i had a 96 EXP with 155,000 alternator fail. Opened it up and the brass rings the brushes ride on were about worn thru. Shorted out and blew out the diodes. Had a F150 with 145,000 that i had changed out last year. Opened it for comparison and the brass rings were about gone in it also. Just a warning. 150K appears to be a good number for life.
Posting Guru
Joined: Apr 2004
Posts: 1,921
Likes: 0
From: central TX
I would call 150K a high average from what I've seen. It might go before that, but after 150K is when you really need to be on the lookout. Mine went somewhere around 140K, but didn't die all the way. Just started losing voltage at high RPM.
Laughing Gas
Joined: Mar 2002
Posts: 1,060
Likes: 12
From: arizona
I removed mine at 230k miles thinking that the brushes would be worn out at least. Actually, they were in great shape......but I replaced them anyway.
Everything else looked fine.
I'm at 270k now and may look at it again when I pull the engine for rebuild.
Everything else looked fine.
I'm at 270k now and may look at it again when I pull the engine for rebuild.
Laughing Gas
Joined: Oct 2003
Posts: 967
Likes: 0
From: DC
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Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
At 90,000 miles battery light would come on at higher RPM's. Drove it a year like that , got worse, pulled it at 115,000 miles. Went thru 2 NAPA altenators in a month, they worked OK, but bad whine, I mean BAD! They finally got me a Delco, sounds just like the original altenator, maybe a very, very, slight whine at idle under full load, which is normal. Even the guys at NAPA said they have a lot of complaints on that Ray-Loc 130 amp altenator. I have no other experience with a Ray-Loc, so maybe I got a couple from a bad batch, but otherwise they may be fine. It's always a little irritating when you buy something, it doesn't work right, and then when you take it back they agree they are having problems with that product. Makes me feel like my time is at their disposal.
Spotty
Spotty
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