86subaru Posted July 18, 2010 Share Posted July 18, 2010 cleaned it with mass air flow cleaner , it will start but stall out , also changed air filter which was very dirty , check all vacuum lines all good ? Quote Link to comment Share on other sites More sharing options...
Durania Posted July 18, 2010 Share Posted July 18, 2010 You check and make sure that the MAF is plugged up? Quote Link to comment Share on other sites More sharing options...
94Loyale Posted July 18, 2010 Share Posted July 18, 2010 Agreed with Durania, make sure you plugged it back in Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 yes and checked it again, :-\ Quote Link to comment Share on other sites More sharing options...
idosubaru Posted July 18, 2010 Share Posted July 18, 2010 what prompted the MAF sensor cleaning? there's a big difference between "it had issues before is started this" and "it ran perfectly before i did this". check for vacuum leak? any check engine lights? Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 (edited) yes i agree running fine, but one thing i did not check was the air filter , which was very dirty , the car would stumble a few time , so decided to clean maf sensor ,now it starts but stalls ,if i stomp the pedle it will run but stall out, no check engine light on Edited July 18, 2010 by 86subaru Quote Link to comment Share on other sites More sharing options...
davebugs Posted July 18, 2010 Share Posted July 18, 2010 This has happened to me more than once on Legacy's. Did you reconnect the stiff maybe 1' diameter hose that's hard to see on the bottom of the airbox (for lack of a better derscription). Heads toward the throttle body in general. I don't do many Foresters But it's easy to forget to reconnect that straight hose and it's hard to see that it's off. Symptoms are exactly as you describe. Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 will check , sure seems like that to me also , thanks all , very hot out , trying to get to hospital to see mother so it adds to it, Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 checked all hoses and rechecked no go , work on it tomorrow , Quote Link to comment Share on other sites More sharing options...
bstone Posted July 18, 2010 Share Posted July 18, 2010 There is a small air hose coming from below the ducting below the MAFS that will cause the car to stall if not hooked up. This happened to me when I swapped the passenger side plugs. Check it out. Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 checked all no go , stalls out , Quote Link to comment Share on other sites More sharing options...
bstone Posted July 18, 2010 Share Posted July 18, 2010 Check the plugs, wires, coil. Make sure they are all snug. Unplug and replug all the airhoses, paying special attention to the air ducting and the small hose below the MAFS. Also, unplug the MAFS and try without it plugged in. You'll get a check engine light but it will eliminate a computer glitch. Lastly, unplug the negative battery terminal and let the computer reset for 5 min before trying again. Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 18, 2010 Author Share Posted July 18, 2010 unpluged maf tried to start ,still the same stalls out, Quote Link to comment Share on other sites More sharing options...
SuBrat84 Posted July 18, 2010 Share Posted July 18, 2010 take it apart.. clean it again? put it all back together.. make sure you tighten all the hose clamps and the lines are all secure... Quote Link to comment Share on other sites More sharing options...
Durania Posted July 18, 2010 Share Posted July 18, 2010 Just gonna throw this out there. You didn't happen to put the MAF in backwards did you? If possible. Can you get us a good shot of the engine bay? Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 19, 2010 Author Share Posted July 19, 2010 sorry camera is broken, i never removered the maf sensor i sprayed into it , i could see where to spray , changed dirty air filter, also checked other air filter, and changed it, could i have caused damage to the maf sensor?which now needs replacing Quote Link to comment Share on other sites More sharing options...
SuBrat84 Posted July 19, 2010 Share Posted July 19, 2010 I think you should remove it and clean again so you can get a good look at it and make sure you don't leave any residue in it? Quote Link to comment Share on other sites More sharing options...
Fairtax4me Posted July 19, 2010 Share Posted July 19, 2010 I would doubt you have damaged it. If you had it would set a CEL for sure. Try unhooking the negative battery cable for 10 minutes or so and then try to start it. If you get a CEL after plugging the battery back in you can get it scanned and maybe find out what's causing the trouble. It should start and run with the MAF unplugged. It won't be happy but it should still run. You didn't happen to put the MAF in backwards did you? I don't think you can. One side has a square flange that bolts to the air filter housing and the other is round and the air hose clamps around it. Quote Link to comment Share on other sites More sharing options...
mdjdc Posted July 19, 2010 Share Posted July 19, 2010 You won't get a CEL unless the car runs for a certain amount of time. I have done the stupid and started without the MAF plujgged in and didn't get a CEL. Your MAF is a wire filament type and it may have been damaged a bit prior to cleaning and the apray just finished it off. Take it off and look at the filaments. See if they are broken, if so, then it will have to be replaced. My thinking is, if it was running before the cleaning, then something broke. You have already checked all of the hoses, so that is not the problem and your only other possibility is the MAF itself. I have a couple of them laying around, so let me know if you need one. Mike Quote Link to comment Share on other sites More sharing options...
The Dude Posted July 19, 2010 Share Posted July 19, 2010 (edited) I remember a fair number of posts where owners unintentionally destroyed their MAFs by cleaning them. Another group of owners destroyed their MAFs by overoiling their cloth "permanent" air filters. Bottom line, the MAF can be delicate and doesn't like being screwed with. I am posting this so that you don't drive yourself crazy trying to fix a MAF that may be beyond help. Once you've checked everything, go to a junkyard and get a replacement. Once you get a replacement, leave it alone. It it ain't broke, don't fix it, especially with MAFs. Edited July 21, 2010 by The Dude Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 19, 2010 Author Share Posted July 19, 2010 already unpluged the maf sensor and - side of battey no difference , starts but stalls , no cell , send pm with price and pay-pal again Quote Link to comment Share on other sites More sharing options...
86subaru Posted July 20, 2010 Author Share Posted July 20, 2010 yes, no junk yards around here with my maf sensor, hardly any subaru;s Quote Link to comment Share on other sites More sharing options...
logic23 Posted July 20, 2010 Share Posted July 20, 2010 where are you in ohio? I thought 99 forester had phase 2 engines. is yours a DOHC 2.5? auto? Im sure a 2.5 OBW MAF will work. I have one on a running engine... the weird thing is that i think the engine will run with the MAF unplugged. Ill check tomorrow... Quote Link to comment Share on other sites More sharing options...
Durania Posted July 20, 2010 Share Posted July 20, 2010 99 Forester would have a SOHC. You could also maybe get lucky and find a 99 2.5RS, those MAY work. Quote Link to comment Share on other sites More sharing options...
logic23 Posted July 20, 2010 Share Posted July 20, 2010 phase 2=no MAF Quote Link to comment Share on other sites More sharing options...
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