- Alternators usually fail due to an external cause such as belt tension. Failure to address the source of the problem can lead to premature failure of the new alternator.
- 15 years ago, alternators were built to withstand the abuse of delivering full output for long periods of time. Today alternators are built for lighter weight and less cost. High temperatures and electrical loads will cause the diode/rectifier to fail quickly.
- The leading cause of alternator failure is a marginal battery which will stress the alternator. A discharged battery can take 7-8 hours to recharge. A battery should register 12.6V after applying a 25A load for a couple of minutes (to remove "surface charge"). A good battery should withstand a load of 1/2 its cold crank rating (CCA) for at least 10-15s without dropping below 10V.
Here are the details on my new one:
(also operated as marksbugbarn.ca, bestpricecarparts.ca, bestpricecarparts.com and marksbugbarn.com)
Canadian branch is based in Hamilton, ON and Washington in the U.S.
(The part was actually shipped from a warehouse an hour away from me in Richmond, BC.)
Price: $94.99 CAD + Tax. Free ground shipping on orders over $75 (took 2 days)
Brand: BBB Industries (also sold as "Wilson")
Reynosa, Mexico - Rotating Electrical
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Winnipeg, Manitoba - Heavy Duty Electrical
(It's not made in China which is encouraging)
It's a new unit so theres no core exchange.
The new alternator also included a test spec sheet (attached below). I has a neat performance graph which shows current output versus RPM.
When I was removing the positive connector nut on the old one, the crimped wire terminal broke off (this is the positive one going to the starter) so now I have to replace that and it doesn't look easy to get to. I would like to fix the belt issue before installing the new alternator. The belt is almost new, so my question to you guys is, how do you fix a rattling tensioner?