Subaru Legacy Forums

Subaru Legacy Forums (http://legacygt.com/forums/index.php)
-   Fourth Generation Legacy (2005 - 2009) (http://legacygt.com/forums/forumdisplay.php?f=10)
-   -   Think my alternator went out (http://legacygt.com/forums/showthread.php?t=190744)

Blumpkin 08-05-2012 03:22 PM

Think my alternator went out
 
Yesterday my 08 lgt started to act weird on me. It would start up then just turn off, no sputtering so it isn't a fuel issue. I just used a volt meter and when on the car is reading 13.9V, so I am pretty damn sure it is the alternator. Anybody have any other ideas?

Max Capacity 08-05-2012 03:33 PM

In all my years, if the car continues to start, the alternator is charging the battery.

13.9 is what the output is to charge the 12V battery.

Blumpkin 08-05-2012 03:38 PM

the car will still start but with the alternator either going out or already out, the car is drawing directly off of the battery. I am just trying to find out if there is anything else that could be causing this issue.

Max Capacity 08-05-2012 03:58 PM

I understand that.

There is another thread on here currently, that is kind of the same issue.

http://legacygt.com/forums/showthrea...es-190679.html

Blumpkin 08-05-2012 05:27 PM

I was not throwing any codes on friday, and the car doesn't bog down at all, it literally just cuts off. I am driving a 5eat, I tried pumping the gas but it still cuts off. I have a really good warranty coverage so I am just thinking about taking the car to a mechanic, it's only a 50 dollar copay for anything they have to do.

Max Capacity 08-05-2012 05:44 PM

Good plan.

Blumpkin 08-05-2012 08:05 PM

One more thing I am gonna do before taking it in is use my buddies matco ecu reader to check for any codes I may have started throwing over the weekend

Justin case 08-05-2012 09:52 PM

13.9 is a normal charging voltage=alternator is charging fine.

xt2005bonbon 08-06-2012 05:57 AM

Quote:

Originally Posted by Justin case (Post 4014008)
13.9 is a normal charging voltage=alternator is charging fine.

^+1.

A simple thing to do as well is to check your battery terminals. It has happened more than once on this forum (me included) where one of the terminals gets loose and randomly shuts the engine off.

Blumpkin 08-06-2012 10:20 AM

Yeah that was one of the first things I checked. I am waiting on a call from my mechanic right now so we will see

Sent from my DROIDX using Tapatalk 2

AkumaMax 08-06-2012 10:38 AM

Quote:

Originally Posted by Blumpkin (Post 4014445)
Yeah that was one of the first things I checked. I am waiting on a call from my mechanic right now so we will see

Sent from my DROIDX using Tapatalk 2

Well good luck. BTW did you check both the Battery and Alternator? From reading anyway it sounds like a loose or unplugged vacuum hose if anything. I know when I was fiddling around with my car I forgot to plug in a hose by the BPV and it would start then die(FACEPALM). Doesn't sound like anything too serious though.

05 LegacyGT 08-06-2012 10:51 AM

If the battery has enough charge to start the car, it certainly has enough charge to keep the car running at least for a short amount of time. This does not sound like an alternator issue.

Blumpkin 08-06-2012 01:13 PM

A buddy thinks it might be a sensor. I am trying to get in at the shop today

Sent from my DROIDX using Tapatalk 2

F1inspiredLGT 08-06-2012 01:36 PM

Another option: take the alternator out and take it to a parts store and have them do a load test. This would solve your alternator guessing if it passes or does not pass the load test.

Strizzy 08-06-2012 02:13 PM

What happens if you start it with the MAF connector unplugged?


All times are GMT -6. The time now is 06:59 AM.


LegacyGT.com