Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

- - - - -

electrical problems on 87 gl


  • Please log in to reply
4 replies to this topic

#1 Guest_jelleyman_*

Guest_jelleyman_*
  • Guests

Posted 02 September 2002 - 04:20 PM

I've got an 87 gl with a low voltage problem. At idle with the rear defogger, ac, and bright headlights on the voltmeter on the dash(analog) reads 8-9 volts. Under the hood the alternator is putting out 13.8-14.0 volts measured at the alternator and the battery. The fuses are all ok and the fuses are reading about 10-11 volts. The fuse links under the hood are ok also. The battery is being charged and running the engine ok but accessories are underpowered: The windows roll up slow and not all the way, the ac fan is slow, the radio cuts out and loses its presets etc. The alternator checked out ok but I replaced it with a good one a friend had with the same results. I'm stumped - any ideas?

#2 Guest_sirltlcleo_*

Guest_sirltlcleo_*
  • Guests

Posted 02 September 2002 - 04:32 PM

I would start checking, cleaning the grounds.My 84 gl has two main grounds, one body ground at the batery box and an engine ground on the engine deirectly across from the battery.Those are the only ones that I know of but somebody with more time on the subys will probably know more.

good luck

#3 Guest_Skip_*

Guest_Skip_*
  • Guests

Posted 02 September 2002 - 06:16 PM

the feed to the fuse box has problems, my GL-10 was doing about the same thing
I ran an aux wire (14 AWG) from the fusible link to the fuse box, paralleling the main feed.

#4 Guest_jelleyman_*

Guest_jelleyman_*
  • Guests

Posted 02 September 2002 - 11:06 PM

Thanx for the comment on the ground. I just pulled the engine to replace a torque converter seal. I got to thinking about what you said and remembered the huge ground to the bell housing but couldn't remember a ground to the chassis from the battery. After checking I found an 8 gauge ground wire from the radiator support to the ac bracket I overlooked. It grounds the chassis to the engine/bell housing. Problem fixed! This is a great list!

#5 ocsike74

ocsike74

    USMB Regular

  • Members
  • PipPipPip
  • 34 posts
  • romania

Posted 20 May 2004 - 08:54 AM

If the simptom is that the puwer is loosen or the memories became volatile allways check the ground because these older cars somtime came in contact with the problem of oxidation what causes the bad contact, and therefore all that inconvenient.
Hi!!!




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users