The Dude Abides Posted June 20, 2009 Share Posted June 20, 2009 I just noticed this today. I used to turn it off, fine like normal. Now it shuts off hard and shakes the whole car when it does. The 1st time it did this i started it back up and taped the gas and it backfired real bad. But didnt do it like that again but revin it up a couple times i can hear it backfireing through the exhaust. Its been exceptionally humid around here lately but i dont know if that a probabble reason. 1988 subaru DL buy the way. The overall running of it has been poor lately. Seems i need to really give it a kick to get it to move. Whats a possible problem i could search for. Ben Link to comment Share on other sites More sharing options...
Niku-Sama Posted June 20, 2009 Share Posted June 20, 2009 so when you turn it off it tries to run still. dieseling? carb or SPFI? Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 20, 2009 Author Share Posted June 20, 2009 Sorry its spfi but its not dieseling. If you turn it off before this it would just shut off nice and smooth, but now its rough. Like it wants to diesel but just shuts off rough. It doesnt keep running though. Link to comment Share on other sites More sharing options...
SubaruWagon87 Posted June 20, 2009 Share Posted June 20, 2009 Timing belts? Dirty injectors? Fuel filter? My 87 wagon did almost the same thing last summer when temperatures got up around 90ish, but its carbed and it dieseled. Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted June 20, 2009 Share Posted June 20, 2009 it Still Sounds like Dieseling Somehow... Does the SPFI have a Gas supply Cutting Device like Hitachi Carbs do? ... if so, I Suggest to Check it, but the Problem I Believe that is Caused due to an Dirty Engine, Let me Explain: Some Dirty Deposits on the Combustion Chamber can become very Hot as Hot Spots that can Still Burn the Gas / Air Mixture for a While even with Engine Already Shut Off. Also Dirty Gasoline, maybe it have some Water Mixed... I Suggest a Deep Clean -SeaFoam?- of your Subie`s Engine intake, Fuel System... Maybe a Fuel Additive if you Notice Water on the Fuel. Good Luck! Kind Regards. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 20, 2009 Author Share Posted June 20, 2009 I did just drag this thing through the mud and slop a few weeks ago. Link to comment Share on other sites More sharing options...
Niku-Sama Posted June 20, 2009 Share Posted June 20, 2009 yea it still sounds like its trying to diesel. i agree with 2.7 turbo though, start with the cheap stuff like that and work your way up if it doesent go away. mabe run a tank of premium and see too....but i do know how much premium is getting to be so....i would completely understand if that was something you wouldnt want to do. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 23, 2009 Author Share Posted June 23, 2009 Its idleing high now. Link to comment Share on other sites More sharing options...
zukiru Posted June 23, 2009 Share Posted June 23, 2009 leaky injector? fuel shuts off but gas still leaks out? would make it idle high too I think. Link to comment Share on other sites More sharing options...
Niku-Sama Posted June 23, 2009 Share Posted June 23, 2009 how high is high? Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 24, 2009 Author Share Posted June 24, 2009 LOL i have a DL with no tach. Im guessing probally 500rpm more then usual. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 Found some other interesting possible culprets. Pulled the airbox off. Found a wet and dirty air filter. Took it off and looked at a dirty maf. There was definately some muddy water in here at one point. Im leaving the air filter out until i can pick up a new one in the morning and i cleaned out the maf but doesnt seem to of cleaned out to many problems. Looked into the throttle body and it looks clean. Link to comment Share on other sites More sharing options...
Niku-Sama Posted June 25, 2009 Share Posted June 25, 2009 test the maf i doubt they like to get wet like that Link to comment Share on other sites More sharing options...
Caramanos2000 Posted June 25, 2009 Share Posted June 25, 2009 Some MMO, seafoam, premium gas, new air filter and some maf cleaner Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 test the maf i doubt they like to get wet like that How Link to comment Share on other sites More sharing options...
Niku-Sama Posted June 25, 2009 Share Posted June 25, 2009 i think it says in the Haynes manual, it doesent in the chiltons, atleast my chiltons. although i forget this some times, is this a MAF thats a round tube with out much in it or is it an AFM with a flappy thingy in it? Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 Round tube with not much in it. Link to comment Share on other sites More sharing options...
bheinen74 Posted June 25, 2009 Share Posted June 25, 2009 you should put a weber on it, no MAF...... okay enough of my smart idea. Get the MAF clean and stuff with some CRC MAF cleaner be careful with it. might have to reset the ecu. No more water holes. Hope you can get this right. Might need a junkyard run to get a replacement MAF. I hope you get Guido back up and running correctly. Oh, and put a llama in your life. Found some other interesting possible culprets. Pulled the airbox off. Found a wet and dirty air filter. Took it off and looked at a dirty maf. There was definately some muddy water in here at one point. Im leaving the air filter out until i can pick up a new one in the morning and i cleaned out the maf but doesnt seem to of cleaned out to many problems. Looked into the throttle body and it looks clean. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 Of all this brent this makes the least sence. Im not throwing a code. It is running far worse then it was before the trip but im not throwing a code. In all seriousness is the DL that stripped down they wouldnt have a CEL. I can try to check for codes but who knows. Ive already cleaned out the maf and ill be replacing the filter and pcv valve today. Its still idleing higher which blows my mind. I have no idea what could be causeing that. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 And screw the lama i want a properly working soob in my life. Buy they way, check craigslist for more subarus to make your neighbor mad. Link to comment Share on other sites More sharing options...
bheinen74 Posted June 25, 2009 Share Posted June 25, 2009 check all vacuum lines. also, does your car have a IAC valve. If so, might need to clean it with sea foam. The Idle Air Control Valve (IAC) can get gummed up or sticky, nd that can cause a high idle, least that is the case on the newer Legacy's Again I don't have experience with your engine, but if it does have a IAC check itand use sea foam. Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 25, 2009 Author Share Posted June 25, 2009 To clean my iac valve i need to take my car off the road. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted June 25, 2009 Share Posted June 25, 2009 You need to put the ECU in d-check mode and run through the full dagnostic sequence. Something is wrong but u-check isn't finding it. GD Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 26, 2009 Author Share Posted June 26, 2009 A clean MAF and New filter helped a bit. Probally wasnt hardly getting any air with the wet muddy filter. Still has some problems so heres whats going to happen. Replace the PCV - because it probally needs it Clean IAC - because it probally needs it Run the D-check - figure out whats wrong and how to run the check lol Seafoam - because it probally needs it Link to comment Share on other sites More sharing options...
The Dude Abides Posted June 27, 2009 Author Share Posted June 27, 2009 Ill work on it tomorrow. Tomorrows my birthday, i hate my birthday. I might as well do something fun. Link to comment Share on other sites More sharing options...
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