1996 Subaru Legacy noise under dash

Tiny
JOEYBOY_60
  • MEMBER
  • 1996 SUBARU LEGACY
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 217,000 MILES
I had already asked Ken about this problem originally and I received some feedback but still can't figure out what the problem is. The care would not start at all at times. We determined the problem might be the starter or the battery. She had her starter replaced and found out her battery was bad as well, so we replaced that as well. Now the care still does not start ocassionally. The noise I originally askedyou guys about went away, but is back now. I located the origin of the noise, and have taken a photo of it, and am forwarding it to you so maybe you can tell me what it is, and if this may be the problem. Also the other day the car started making buzzing noises, the CD player began spitting out CD's, really weird. She put the key in the ignition, and when the key went half way in, the buzzing stopped, and when it went all the way in, the buzzing started again. I am forwarding you a photo of the part under the hood, and see if you can tell if this may be the problem. The service tech I called at my subaru dealer told me it could be the fuel pump relay that could be bad, and it could send codes all over the place and cause this problem. Is this the fuel pump relay in this picture? He said it was an easy and cheap fix. What do you think? Any additional input would be appreciated. Thanks




http://www.2carpros.com/forum/automotive_pictures/17851_relay_1.jpg

ddd
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Friday, August 14th, 2009 AT 9:38 AM

7 Replies

Tiny
DOCFIXIT
  • EXPERT
Hi
What you got there is the mode actuator for AC. The fuel pump relay is underdash far left has 4 wires to it. Should be couple more relays there also.
Hope this helps
Thanks for donate
Is noise a buzz or clicking rapidly? And does car not start when noise is present?
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Friday, August 14th, 2009 AT 1:05 PM
Tiny
JOEYBOY_60
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This time when she put the key in the ignition, it buzzed, when the key was halfway in, the buzzing stopped, and it started again when the key fully seated all the way into the ignition switch. The car would not start, not even crank, yet when she jumped it, it started, on the second attempt.

That mode accuator just has this muffled thump to it, as best as I can describe it. ZI watched it while it was making the noise, and it looks like it's trying to turn the attached white curved piece, but it's like it's stuck, as best as I can describe it guy. It's intermittent. What does it actually do, and does it need to be replaced? I don't think this would cause the car to not start, if it's AC related, right?
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Friday, August 14th, 2009 AT 10:08 PM
Tiny
DOCFIXIT
  • EXPERT
Does car have anti-theft? If yes interuot relay is above joint box left side dash. So buzzing not coming from mode actuator? If yes where is buzzing comming from?
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Saturday, August 15th, 2009 AT 9:46 AM
Tiny
JOEYBOY_60
  • MEMBER
Yes, car does have anti-theft. The mode accuator makes the muffled thumping sound. The buzzing she heard the day the electronics went nuts is coming from under the dash, on the left side, so that is probably the interruptor you are talking about. Today the car did it again. Turned the key, no cranking, no clicking, absolutely nothing. All the electrical components came on, lights, radio, dashboard lights, etc, but no engine crank, or even a clicking, nothing. I went out and I disconnected both cables from the battery, waited about a minute, and reconnected the neg first, then when I reconnected the positive cable, the alarm didn't go off, as it usually does when you disconnect and reconnect the battery cables. I did this twice and it still didn't go off. I thought it strange. After I reconnected it she turned the key and it started. I also noticed that even when the alarm is off, when it is parked in the garage and the alarm is not necessary, the red light for the alarm still blinks, as if it is activated, and after you turn if off, to drive the car, the alarm light continues to blink as if it were still on. Do you think it is possible that the security system has some kind of electrical short or other problem that is causing all of this, because the noise coming from the mode accuator for the a/c is unrelated to the starting problem, it just happened at the same time. I think I am going to disable the alarm system and see what happens, because she had the car diagosed at a local auto parts store, and the only code it registered was cylinder 4 misfire, which we know it does, because it does this ocassionally when she drives on the interstate. You would think a problem like this would register a code, but it doesn't.

I promise not to bother you guys anymore with this, but does my theory that there could be a problem with the anti theft system make sense? When this happens, it's almost as if the system detects a theft of the vehicle and kills the ignition. Does this sound like something feasible?
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Monday, August 17th, 2009 AT 11:30 PM
Tiny
DOCFIXIT
  • EXPERT
Yes I agree anti-theft is culprit testing is needed. Do you have acess to info? If not click on site at bottom of reply manuals. And for @$10 you can get instructions downloaded on your computer. As for AC actuator run the system through modes see if they function.
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Tuesday, August 18th, 2009 AT 9:00 AM
Tiny
JOEYBOY_60
  • MEMBER
Thanks guy. My daughter says there is one small thing that doesn't work on her a/c so that is probably the glitch in the mode accuator. Right now that isn't that big a deal. I will download the info for disabling the anti theft, and hopefully that will take care of the problem. Hopefully this didn't damage anything else related to the ignition system.

Thanks again for all of your feedback. Saved a lot of money in diagnostic fees, and since this probably wouldn't have shown up anyway, it would have been $90 wasted. I will certainly use you guys again if anything else happens with her car. I have a feeling I will be talking to you guys again in the not too distant future.
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Tuesday, August 18th, 2009 AT 9:57 AM
Tiny
DOCFIXIT
  • EXPERT
Your Welcome
Get back if need help diagnosing
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Tuesday, August 18th, 2009 AT 10:02 AM

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