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How do I tell? Battery or Alternator Going?
Posted 17 August 2004 - 12:32 PM
How can I tell if it is the battery...or the alternator going?
Posted 17 August 2004 - 01:05 PM
If your voltage is low when engine is running it's your alt. If voltage is low when engine is off then it's your battery. But, if your alt. is going then your battery may not be fully charged. Test the voltage of battery when car is off. If it's below 12 (I think 12.8 is fully charged) and dropping, usually one one hundredth a second or 2... i.e. 11.85.... 11.84....... 11.83 then you have a bad battery but the alt. has been saving you up to this point.
If it's your battery I recommed Costco... their prices are always lower and at times half what pep-girls, and auto-bozone want...
Posted 17 August 2004 - 01:10 PM
Any reccomendations on a replacement, as well as a shop to do it? I am in the Orlando Florida Region right now.
Posted 17 August 2004 - 01:39 PM
A good battery tester will have a Load Test on it. That will tell you if the battery is good to go. As for alternators I've seen 3 different fancy devices and machines say an alternator was OK only to replace it and fix my electrical problems that I suspected was an alternator. This happend on 2 different alternators
If you got the money to spend do both. Do a load test and replace the alternator.
Posted 17 August 2004 - 01:44 PM
Posted 17 August 2004 - 02:05 PM
Posted 17 August 2004 - 02:24 PM
Posted 17 August 2004 - 02:47 PM
You can replace your alt with a 12 mm combination wrench (one box, one open) Maybe a 10 mm one to remove the belt guard and one of the connectors. You dont even need two wrenches cause every nut involved is so made it does'nt need to be held at the other end. Check the size of your bolts to be sure but I'm pretty certain you dont need more than one or two size wrenches.
yeah...one slight problem...I am on an internship in Florida until Jan...and I don't have tools, or a place to work down here!!!
P.-S. you might also check the price of an alternator at 1stSubaruparts, I bought one there (Subaru rebuilt) and it was not very expensive once you deduct what they give you back for the core.
Posted 17 August 2004 - 04:16 PM
Posted 17 August 2004 - 04:34 PM
Posted 17 August 2004 - 07:34 PM
Does anyone have specific instructions/steps on how to do this?
How about pictures...I know...I am greedy!
Also, what do I need to look for in buying an alternator? Obviously there needs to be a size/model/type I am looking for here. I also am interested in seeing if I can find a higher output alternator...however if not...the regular one would be fine!
Thanks guys for your help!
Posted 17 August 2004 - 11:50 PM
Posted 18 August 2004 - 02:14 AM
Posted 18 August 2004 - 04:15 AM
Alright...I am having voltage drops every once in a while when I am putting a strain on the vehicle...i.e. radio, wipers, and AC. I am now averaging a voltage of only 11.8 volts. Every once in a while for some reason it peaks right on up, however usually averages around that when the car is in motion. When I stop though, the voltage can drop down to 9 volts
Is it only the newer Legacys that had the Alternator recall? They would not charge at high engine speed, so people would drive down the highway, get low voltage readings, pull off, alternator would function normally, they'd get back on the highway, etc. We never experienced the symptoms but one friend did on a '98 OBW and a mechanic replaced the alternator. Subaru later reimbursed him.
You're the guy that had a radio and a bunch of emergency lights, right? Maybe now is the time to go to a higher output alternator. I thought you'd purchased an AGM battery, so it should still be on warranty?
Posted 18 August 2004 - 08:21 AM
As far as a HO alternator, where can I get one that will fit? I imagine it's not something I can pick up at Autozone or Advanced auto Parts!
Posted 18 August 2004 - 10:48 PM
Posted 21 August 2004 - 07:03 AM
Posted 21 August 2004 - 04:40 PM
Posted 29 August 2004 - 04:03 PM
Thanks for the help guys!
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