Focus Fanatics - View Single Post - 2005-2007 duratec alternator failure (just a thought)
View Single Post
Old 01-29-2013, 06:00 AM   #3
whynotthinkwhynot
Captain TMI
 
whynotthinkwhynot's Avatar
 
Join Date: Jan 2005
Fan#: 18416
Location: the armpit of TN, Memphis, TN
What I Drive: 05 ZXW; 02 Windstar; 13 C-Max SEL

Posts: 19,809
FF Reputation: 267 whynotthinkwhynot Outstanding Standing Memberwhynotthinkwhynot Outstanding Standing Memberwhynotthinkwhynot Outstanding Standing Member
Buy-Sell-Trade Rating: (1)
From what I understand, the pulley is built so that it will not over-rev, it will dampen sudden rpm changes, and will not turn backwards. That's what my alternator rebuilder told me, and that it costs $80, so I was lucky that mine was still good or the build would've been more expensive.

Mine failed at 140k/7yrs. It failed due to everything inside of it that could go bad being bad: field brushes, bearings, VR.

I have seen where some people have had their alternator go out at an earlier time either in mileage or years. I think most of those were VR failures. Back in the day- before fancy pulleys, but after internal VRs- alternators would last about 60k miles. Really, the lifetime of a car back then was under 100k for most people. That's about the point where you were replacing everything, and what's the point in keeping a car that long? I think most people who cycle through vehicles only got 60k out of theirs, or did lease programs. Lifetime alternators were a godsend for used car buyers because the chances were pretty good that even if you took care of the vehicle you'd go through at least 2 alternators before you got rid of it.
__________________
Be eclectic.
---The Complete How-To Archive--

Moderating everything now, let me know if I can help.

Quote:
Originally Posted by the user formerly known as ZX3_Chick View Post
You're special aren't you.
whynotthinkwhynot is offline  
    Reply With Quote