GreenMarine Posted June 20, 2011 Share Posted June 20, 2011 This is the first time I've seen the code come up since I've owned the car. Previous owner (and friend) said that the CEL would come on every now and then, and that cleaning some hose (I forget which one he'd clean) would cause it to go off... Here's a few details on the car: - 1998 Legacy GT (BK) - Auto - 159,560 miles - Headgaskets replaced around 120k miles - Pretty good fuel mileage (Best: 28.7mpg - Avg: 24mpg), then again I do drive VERY sedate Visually the EGR looks to be in good condition (exterior view only)... I'll continue my research and update this thread as I solve / fail with this problem. Any input or advice, please feel free to let me have it! Thanks guys! Link to comment Share on other sites More sharing options...
GreenMarine Posted June 20, 2011 Author Share Posted June 20, 2011 Almost forgot... I JUST changed the oil for the first time since owning it. Switched from 10w-30 (unknown brand) to Shell Rotella T 15w-40 (dino)... And had JUST filled up the car with fuel about 5 miles before the light came on... I'll be sure to check the fuel cap right now... This whole thing happened about 45 minutes ago. It is currently 99*F here in Enterprise, AL... Anyone think the heat might have something to do with it? Link to comment Share on other sites More sharing options...
Kennyfvholla Posted June 21, 2011 Share Posted June 21, 2011 I had this same problem for a couple of months. I had no vacuum leaks anywhere, the EGR valve worked great, and the EGR pressure sensor tested out to be okay (I threw it in another car to verify it worked). The problem turned out to be the filter on the vacuum line the went to the pressure sensor. the part number is 22663AA010 and it costs $8 Link to comment Share on other sites More sharing options...
Baddog Posted June 21, 2011 Share Posted June 21, 2011 Pics of said part? Like the location on the car. Link to comment Share on other sites More sharing options...
Kennyfvholla Posted June 21, 2011 Share Posted June 21, 2011 I got this pic off of a thread on the USMB forum.. The object circled in red, that interrupts the vacuum line, is the filter Also, make sure that this line in not pinched off by a black tie wrap tying it to the black hose just behind it. Mine was attached to the hose just before the filter, as well as a buddies 99 LGT, but his was being pinched off and the pressure sensor could not get a correct reading and popping the same code. We removed the tie wrap and replaced the vacuum line to correct his problem. Link to comment Share on other sites More sharing options...
GreenMarine Posted June 24, 2011 Author Share Posted June 24, 2011 Hmm, strangest thing happened... Tuesday the 21st (day after the CEL first appeared), the CEL was off and hasn't been on since ... Anyone heard of this code appearing and then disappearing?? Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted June 24, 2011 I Donated Share Posted June 24, 2011 Hmm, strangest thing happened... Tuesday the 21st (day after the CEL first appeared), the CEL was off and hasn't been on since ... Anyone heard of this code appearing and then disappearing?? Sure. not uncommon for it to happen -broknindarkagain My Current Project - Click Here COME AND TAKE IT "The only thing necessary for the triumph of evil is for good men to do nothing." Link to comment Share on other sites More sharing options...
987687 Posted June 24, 2011 Share Posted June 24, 2011 It's a computer, it had a glitch. That's not really very uncommon... If you've ever had your computer have a problem it makes sense. I've always fixed EGR issues by making sure the lines aren't blocked, the solenoids work, and there aren't any vac leaks. Use a hand held vac pump, or suck on the line going to the EGR valve. If it doesn't open, then the valve is stuck. EGR is stupid anyway.... Just disconnect the vac lines and pull the bulb out for the cel... Link to comment Share on other sites More sharing options...
Kennyfvholla Posted June 24, 2011 Share Posted June 24, 2011 Mine would come on for days or weeks straight and then disappear, but it always came back 50 to 100 miles later, until I fixed the problem Link to comment Share on other sites More sharing options...
GreenMarine Posted June 25, 2011 Author Share Posted June 25, 2011 Mine would come on for days or weeks straight and then disappear, but it always came back 50 to 100 miles later, until I fixed the problem Yeah, mine came back today... We'll see if it's there tomorrow... Although I suspect some of the lines may be clogged alittle... Sure would be nice to just completely delete the damn EGR... What a PITA!! Link to comment Share on other sites More sharing options...
GreenMarine Posted June 28, 2011 Author Share Posted June 28, 2011 Went away yesterday and came back this afternoon... I think I'm just going to wait until it stops coming and going (or until I notice a horrific change in fuel consumption - getting about 24mpg combined with the AC on all the time at the moment) before trying to trouble shoot it... Link to comment Share on other sites More sharing options...
GreenMarine Posted June 28, 2011 Author Share Posted June 28, 2011 Mine would come on for days or weeks straight and then disappear, but it always came back 50 to 100 miles later, until I fixed the problem What part fixed it for you again Kenny? Link to comment Share on other sites More sharing options...
Kennyfvholla Posted June 28, 2011 Share Posted June 28, 2011 Releasing tie wrap that tied the vacuum line to the larger hose behind it fixed the issue in my buddy's car. And replacing the circular, white filter shown in the picture I attached in an above post was what fixed it for me. Link to comment Share on other sites More sharing options...
GreenMarine Posted June 28, 2011 Author Share Posted June 28, 2011 Releasing tie wrap that tied the vacuum line to the larger hose behind it fixed the issue in my buddy's car. And replacing the circular, white filter shown in the picture I attached in an above post was what fixed it for me. Did either of you get a slight hesitation when you lightly got on the throttle from a standstill at times? I'm getting a random almost "fall on it's face" for about 1 - 1.5 seconds when I go to take off... Never really noticed it until today when I went to turn left onto a 4 lane road :eek:... Scared the piss outta me too!! Link to comment Share on other sites More sharing options...
Kennyfvholla Posted June 30, 2011 Share Posted June 30, 2011 Well I've always gotten a half to 1 second hesitation whenever I tried to start from a standstill with more than just 30 to 35 percent throttle input. Has been that way before and after this problem, and never at light throttle. Have you removed that ERG valve itself and tried to clean it? It could be getting ever so slightly stuck Link to comment Share on other sites More sharing options...
Baddog Posted June 30, 2011 Share Posted June 30, 2011 I have hesitation too when I give it too much throttle from a stop. I hate it and can't figure it out. My friends 92 Legacy 4EAT takes off the line like a bat out of hell without hesitation. Link to comment Share on other sites More sharing options...
GreenMarine Posted July 9, 2011 Author Share Posted July 9, 2011 Well, 4th of July weekend my car blew it's headgasket ... It is currently up in Cary, NC at my mechanics place (TurboTime) getting all fixed up... Hopefully when it comes back it will be good as new - because I'm getting tired of fixing so much stuff!! Already spent 2x what I paid for the car on getting it back up to my standards!! Link to comment Share on other sites More sharing options...
Kennyfvholla Posted July 9, 2011 Share Posted July 9, 2011 sorry to hear that happened. the same weekend I hit a deer that caused about $800 in used parts of damage Link to comment Share on other sites More sharing options...
GreenMarine Posted August 6, 2011 Author Share Posted August 6, 2011 Well the car had it's headgaskets replaced. Turbotime (my shop in Cary, NC) do the replacements THE RIGHT WAY. They replace the headgaskets with the three layer metal ones from later model 2.5L motors. I haven't picked up the car yet (next weekend I'll get up there and pick it up), but at the moment they are driving it around, making sure that everything is working correctly and what not... Anyone in NC that has a headgasket failure, I HIGHLY recommend TurboTime in Cary, NC to do the job for you... You won't be disappointed at all!! Link to comment Share on other sites More sharing options...
The Grouch Posted August 9, 2011 Share Posted August 9, 2011 Well wish I read through this thread sooner...I have similar problem for a 1995 Legacy Lsi (4EAT). Back in mid-June, on a 18 hour drive back from Yellowstone, my car threw on it's CEL. I noticed nothing in the way it drove, felt fine. Got home really late, and didn't check the code. The next morning, I start the engine and the CEL is off. I check the code anyways and it was P0400. I'm like...okay...whatever was not working is now working again, so no worries. Reset the CEL just in case to see if whether the first time was a fluke or if the next CEL throws the same code. Just today, the CEL came on again and it's the same P0400. Still don't notice anything different about the way the car drives, and I have no hesitation in throttle from a standstill...I notice nothing wrong. Did not have time to do any troubleshooting but one thing I did check was the vacuum in the hoses, and they are all good, no leaks. \ Anyways, just wanted to share my story and bump this thread. I'm really curious as to whether or not your car is still giving the P0400 code, GreenMarine. Keep us updated...meanwhile, I will try checking the filter and hoses for clogs. Just wanted to post quickly here before I go off and research more over the internet. Link to comment Share on other sites More sharing options...
GreenMarine Posted August 16, 2011 Author Share Posted August 16, 2011 Got the car back last friday and JUST got back to Enterprise, AL from Raleigh, NC about an hour ago... The drive was great and I could swear that the car now has more power! Maybe not top end (I RARELY EVER go over 4,500rpm) but definitely more torque! Overall I am VERY pleased with the outcome of the service... Once again, I HIGHLY recommend TurboTime in Cary, NC to do any and ALL Subaru service work you may need Link to comment Share on other sites More sharing options...
The Grouch Posted August 17, 2011 Share Posted August 17, 2011 Dammit man what about the code?! Link to comment Share on other sites More sharing options...
GreenMarine Posted August 18, 2011 Author Share Posted August 18, 2011 Oh yeah, the code is all gone... It hasn't come back since they took my motor apart... No idea what they did, or if they even did anything. But so far no code... We'll see if it comes back on anytime soon... Link to comment Share on other sites More sharing options...
ladysmanfelpz Posted August 27, 2011 Share Posted August 27, 2011 Sorry for reviving a dead thread, but my egr code will not go away! I've cleaned the egr, transducer and everything. I changed the filter that was mentioned in this thread and it seemed to work, but only for a lil while. My local shop said that long pipe running up to the egr can get clogged and that will cause the problem. The only problem is that I can't get to it because the bottom bolt is deep down in the engine bay. You think taht is the problem or just that my egr is bad? Car has 180,000 on it. I just don't want to spend $140 a new egr valve and the cel still comes on. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted January 14, 2014 Share Posted January 14, 2014 I know it's old but I had the same issue ^ the issue was that little small tube on the side next to the EGR was the one that was clogged, I mean it was really plugged.. once I cleared that out the code was gone. Link to comment Share on other sites More sharing options...
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