just bought a 1999 legacy outback and have some repair questions - Subaru Outback - Subaru Outback Forums
Reply
 
LinkBack Thread Tools Rate Thread
post #1 of 14 (permalink) Old 03-22-2008, 11:35 AM Thread Starter
Recruit
 
Join Date: Mar 2008
Location: albuquerque
Car: 99 subaru legacy outback
Posts: 10
Feedback Score: 0 reviews
just bought a 1999 legacy outback and have some repair questions

I just bought a 1999 legacy outback at auction with 177k on the clock and am in the process of catching up all the maintenance on it. I pulled the spark plugs last night and you can see in the pic this is what i found. I do not think the original owner kept up with servicing very well. What i want to know from you all is what all should i do too the car to catch it up. When i picked it up the check engine light was on so i went by autozone to pull the codes.

P1443
P0440
P0325
P301
P302
P303
P304

I had them clear the codes and i drove it home which was about 8 blocks. I replaced the spark plugs with a new set of NGKs gapped to .041 as per the zones recommendations. The air filter was really bad so it was replaced too.

There is a sound i hear when i hit the gas i am trying to figure out. It is only audible when under load driving down the road. It is like a buzzing sound. When in park and I rev it you cannot hear it.

So what all do you suggest i do next to catch up on maintenance and possibly fix the buzzing sound? I was thinking these things

Oil change
fuel filter (where is it at and is it easy to change?)
pcv valve (does it have one and where is it at)
breather element (does it have one and where is it?)


Thanks all
Attached Thumbnails
Click image for larger version

Name:	spark plugs.jpg
Views:	966
Size:	263.6 KB
ID:	13110  
hotairgypsy is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 03-22-2008, 11:56 AM
Registered User
 
hawg's Avatar
 
Join Date: Dec 2006
Location: pennsylvania
Car: 98 OBW 2.5 Ruby Red Pearl
Posts: 268
Feedback Score: 0 reviews
Send a message via MSN to hawg
P1143 Pressure sensor circuit range/performance problem (low input)
P0440 Evaporative emission control system malfunction
P0325 Knock sensor circuit malfunction
P0301 Cylinder 1 misfire detected
P0302 Cylinder 2 misfire detected
P0303 Cylinder 3 misfire detected
P0304 Cylinder 4 misfire detected
Since you have already replaced the plugs that may take care of your misfire issue. Check the knock sensor to see if ti is cracked. If so replace it. The other codes need to be checked out as it could be a few different things causing them

1953 Harley FLE
1969 Camaro SS
1990 Cadillac Fleetwood
1993 Corvette 40th Anniversary Convertible
1994 Suzuki RF900
2000 Harley FLHTCI
2003 VDC Wagon
hawg is offline  
post #3 of 14 (permalink) Old 03-22-2008, 12:11 PM
Super Moderator
 
Join Date: Jan 2007
Location: Oceanside, NY
Car: 2005 OBW 2.5L, 1989 Subaru Justy, RIP Blu
Posts: 7,298
Feedback Score: 0 reviews
Send a message via AIM to nipper
Low input means an open in a circuit, a high means its got a short.

Why they say input is that every thing is refernced to the ECU, not the individual sensor. A low input means that there is a low or no signal going into the ECU.

There isnt anything earth shattering here. Replace the wires with OE wires, also replace the PCV valve, and check to make sure the PCV valve hoses are not clogged.

Drive the car for a few days, then re read the codes. There is nothing there that is going to blow the car up, but the knock sensor may affect performance, so go ahead and replace that.

nipper
nipper is offline  
post #4 of 14 (permalink) Old 03-22-2008, 02:19 PM
Registered User
 
brianjglas's Avatar
 
Join Date: Jan 2008
Location: Memphis, TN
Car: 1999 Legacy Outback
Posts: 329
Feedback Score: 0 reviews
Congrats on your "new" car.

The buzz sounds like it might be one of the heat shields on your exhaust. If yiur can get under it try tapping the heat shields looking for a missing bolt, rusted out corner or something that moves a little bit. I found a rusted out corner on my '99 and used high-temp black rtv to fix it.
brianjglas is offline  
post #5 of 14 (permalink) Old 03-22-2008, 02:24 PM Thread Starter
Recruit
 
Join Date: Mar 2008
Location: albuquerque
Car: 99 subaru legacy outback
Posts: 10
Feedback Score: 0 reviews
i just took it on a 20 mile drive and i got the check engine light too come on...read the code and it was a P0325...no other code...how do you check and add fluid to the front differential...i think that is what is making the noise cuz i think it is low
hotairgypsy is offline  
post #6 of 14 (permalink) Old 03-22-2008, 02:28 PM
Registered User
 
brianjglas's Avatar
 
Join Date: Jan 2008
Location: Memphis, TN
Car: 1999 Legacy Outback
Posts: 329
Feedback Score: 0 reviews
If you are still looking for the PCV and fuel filter, they are labeled in this picture.
The PCV is behind the plug wire and the fuel filter is a black canister with three ports/hoses.

Do you have a manual or auto, that makes a difference on the front diff.
Attached Thumbnails
Click image for larger version

Name:	img_3345a.jpg
Views:	4520
Size:	293.5 KB
ID:	13111  
brianjglas is offline  
post #7 of 14 (permalink) Old 03-22-2008, 04:11 PM
Registered User
 
Join Date: Jul 2007
Location: Lac Ste. Marie, Quebec
Car: 1997 SVX Bordeaux 2012 OBW 6 speed 1992 SVX Ebony 1992 SVX Claret
Posts: 1,187
Feedback Score: 0 reviews
PO325 knock sensor is an extremely common code on these cars. Get a new knock sensor and replace it, it's a 10 minute job. Someone on here had a new one for sale a couple of days ago or go tosubarupartsforyou
I changed mine a couple of months ago.
Blacky is offline  
post #8 of 14 (permalink) Old 03-22-2008, 04:19 PM Thread Starter
Recruit
 
Join Date: Mar 2008
Location: albuquerque
Car: 99 subaru legacy outback
Posts: 10
Feedback Score: 0 reviews
can the knock sensor be bad even if it looks fine? i have the automatic... what weight oil goes in the difs?
hotairgypsy is offline  
post #9 of 14 (permalink) Old 03-22-2008, 04:22 PM
Super Moderator
 
Join Date: Jan 2007
Location: Oceanside, NY
Car: 2005 OBW 2.5L, 1989 Subaru Justy, RIP Blu
Posts: 7,298
Feedback Score: 0 reviews
Send a message via AIM to nipper
Quote:
Originally posted by hotairgypsy
can the knock sensor be bad even if it looks fine? i have the automatic... what weight oil goes in the difs?
Yes. It's a peizo electric sensor. It works like a microphone with a little sliver of quartz in it. It produces a very small ac signal. The quartz can fail, it can become loose, or the housing can fail.


nipper
nipper is offline  
post #10 of 14 (permalink) Old 03-22-2008, 04:23 PM Thread Starter
Recruit
 
Join Date: Mar 2008
Location: albuquerque
Car: 99 subaru legacy outback
Posts: 10
Feedback Score: 0 reviews
here is the front of the knock sensor in there now
Attached Thumbnails
Click image for larger version

Name:	dscf2277.jpg
Views:	741
Size:	109.8 KB
ID:	13112  
hotairgypsy is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Subaru Outback - Subaru Outback Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Rate This Thread
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome