19Legacy97 Posted July 22, 2011 Share Posted July 22, 2011 OK. So I've got the EGR flow malfunction. (among others) I opened the EGR valve manually the engine (idling) dropped rpms but remained stable. So there is exhaust gas flow not sure if enough though.. it might be the vacuum lines but i can't get them off with out fear of snapping the ends. EDIT: when the egr is open it's the sound and performance i was talking about. I don't know if it's not closing all the way. is that possible? Link to comment Share on other sites More sharing options...
tbssubaru Posted July 23, 2011 Share Posted July 23, 2011 sub i just picked up a 97 LGT Wagon today that's throwing 400 and 420 codes , curious to see where this goes Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted July 23, 2011 I Donated Share Posted July 23, 2011 just replace your egr. problem solved -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...
naimouasta Posted July 23, 2011 Share Posted July 23, 2011 first check the lines running around the egr. take the egr and clean it and make sure everything is clear. also check the egr pipe if its clear. if nothing works, then it can be the solenoid that hides under the intake manifold just below the egr. when i took that solenoid off, there was a bunch of moisture and stuff running out of it. i assume it was a bad/stuck solenoid. my buddy just so happened to have a spare intake manifold laying around so i stole that solenoid and the light has been away since. don't replace anything until you know the lines, pipe, and egr are clear/clean. i've read about people spending a bunch of money chasing this problem. Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted July 23, 2011 I Donated Share Posted July 23, 2011 9/10 times its just an EGR.... unless its a Ford...then 9/10 times its the damn DPFE sensor lol -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...
19Legacy97 Posted July 23, 2011 Author Share Posted July 23, 2011 egr is a little pricey when it can be something cheaper (or just needs a cleaning) that could be found with a few man hours. Although the vacuum lines are like corroded on.... Link to comment Share on other sites More sharing options...
johnegg Posted July 23, 2011 Share Posted July 23, 2011 i just fixed a p0400 code on my 95 lego L by repairing a hole in the gas tank filler neck. but i knew i had a leak since gas was dripping on the ground when i filled the tank. Link to comment Share on other sites More sharing options...
19Legacy97 Posted July 23, 2011 Author Share Posted July 23, 2011 EGR valve looks in good condition. Completely carboned though. http://i387.photobucket.com/albums/oo318/Szustygesto/IMG00006-20110723-0859.jpg moves easily with a little suction. Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted July 23, 2011 I Donated Share Posted July 23, 2011 you can't accuratly test it without a vacuum gauge. as well, you need to hook up a vacuum gauge the the line coming from the car to see if its up to spec....well, thats if you want to do it "the right way" -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...
19Legacy97 Posted July 23, 2011 Author Share Posted July 23, 2011 side note. took of the #2 cylinder wire. Ended up with a frayed wire with a blue/green connector left in the coil. Should i replace the coil? Link to comment Share on other sites More sharing options...
19Legacy97 Posted July 24, 2011 Author Share Posted July 24, 2011 I did what you said broknindarkagain. the egr can hold a vacuume pressure no problem. no leaks or anything. i don't get it. i traced all the tubes/lines near this thing and the two lines coming from the top of the intake manifold that go to that thing. (steel line goes to it from egr. it has 3 vacuum lines coming out of it... THIS THING! ) http://i387.photobucket.com/albums/oo318/Szustygesto/IMG00007-20110724-0227.jpg (EGR behind it) It was full of carbon and reeked of gasoline. the steel attached underneath was full of carbon as well. Could be a near by clog. the hose you see that does the loop (in main focus) i put a vacuum gauge to it on the end where the Q on the thing above would be and with one pump the gauge sky rocketed. Link to comment Share on other sites More sharing options...
19Legacy97 Posted July 27, 2011 Author Share Posted July 27, 2011 OK so after realizing thats the BPT... there's stable vacuum pressure after this that goes to the solenoid. after the solenoid however, it is unstable and drops out to nothing. think i may of found my problem. Link to comment Share on other sites More sharing options...
Osei Posted July 27, 2011 Share Posted July 27, 2011 Go to a junkyard and pull one from the cleanest engine you can. While Subaru lists different part numbers for different years, the cost is low. Also take the purge control solenoid while there. Looks similar and may be mounted on your passenger strut tower or under throttle body area, passenger side. Both are pricey and are dealer parts. I paid $10 each. O. Link to comment Share on other sites More sharing options...
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