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HELP oh Subaru gurus! In dire need of assistance!!!


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It is over fueling for some reason.

Shouldn`t even run w/the pipe off and no MAF signal to the ECU.

 

Try unplugging the MAF.CTS too.

Fuel pressure too high because of a clogged return line or stuck regulator perhaps.

Air filter OK?

Edited by naru
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Yeah the air filter is new and yeah is seems to be getting to much fuel before when it was doing this it was because the intake boot was leaking ill have to heck the regulator it should be the same on an spfi correct? I'm at my witts end and I'm completely broke. The regulator makes sense tho. I'll check that when my hands thaw.

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Pretty sure SPFI regs are different.

I can say for sure,they have different part #s.

Check that the vacuum line isn`t blocked.

 

Try unplugging the MAF.

 

Suppose it could be 1 or more wonky injectors as well.

If nothing else works,I would try unplugging them one at a time.Not fun in the cold.I sympathize.

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Yeah the cold sux although when I smash my knuckles the blood freezes and doesn't make a mess so I guess there's a silver linning I went out and started to unhook the return line then smashed my knuckle. So I'm back inside for a few minutes dressing wounds lol I hope the regulators are the same I don't have 141.89 to spend. I barely have .99 to spend..

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The clicking MAF is weird.

Check to see if the flap moves freely thru the full range.Maybe it does not return to idle position.

 

I`d suggest checking resistances too.

Unfortunately,I don`t have specific specs for your car.

Maybe someone else can help out?

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Yeah I need to buy a voltmeter so I can check the resistance I actually have several repair books and a fsm for my car. What do you mean " flap"? This is the first I've heard of this I know my car uses a hot wire and a cold wire system in the Maf if you have a picture of what your talking about it would make figuring it out much simpler if not I guess I'll just burry my head in a Haynes or chilton manual till I figure it out

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Pardon me if I`m incorrect.

I assumed from your board name the car is an 86.They don`t have hot wire MAFs.

 

86s have flapper MAFs.

Airflow moves a flap which moves a potentiometer.

They also incorporate an air temp sensor.

FSM should show this.

Here is waay too much info on very similar ones.

http://the944.com/afm.htm

 

If yours is the hotwire type,clean it carefully w/throttle body cleaner.

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Yeah I get that a lot but my current gl-10 is an 87 lol sorry for any confusion

 

 

And right before this all started I cleaned the Maf with crc Maf cleaner it was running perfect better than it has ever run then it just started doing this again

 

And when I put the Maf back after cleaning it all the hot/cold wires were intact.

Edited by AKghandi
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Yeah it doesn't have any codes ( In u check mode) haven't tried the other modes. I'll check the injectors in a few minutes.

 

I can't remember if this is correct but doesnt the. Alternator have something to do with the fuel pump?

Bad voltage regulator giving it too much fuel maybe. This did all start after I replaced the alternator..

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I went out and started it this morning still has the same problem but it seems to be getting worse now with the turbo pipe connected it won't rev up at all. The ECM is flashing code 2 ( 2 short flashes) which I think means no codes I'll have to check my book tho.

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Update! I put the alternator back to the way it was and now I can almost drive it. It spools up and gives all the power she had before but it revs up like crap, like before. Although notably the backfires have stopped.

 

And now the cel is on showing code 21 again which makes no sense because I just replaced the CTS and it wasn't showing that code before I swapped out the alternator...

 

Ow. My brain hurts..

Edited by AKghandi
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Drove it to drop my brother off at work it's now on the side of the road. M**********r and the walk in the snow was fun too. So now I'm thinking it might be the exhaust something is getting very hot and making a smell I don't recognize it's not the cats because well I don't have any.ill unbolt it when I get the car home see if that makes a difference but I doubt it will.. I think this car just doesn't want to run anymore.

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There may be something wrong with the CTS circuit and not the sensor itself. I think the code covers both areas.

 

I suggest you check out the injector and make sure it is working ok. It may be faulty and letting too much fuel flow. You didn't state how you made sure the fuel pressure regulator was ok but that is possible source of the trouble.

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well.. i don't have any kind of troubleshooting tools so i just unhooked the return line to make sure it was at least letting fuel out(quite alot of it) and i also checked the return to make sure it wasn't clogged. havent checked the vacuum line to it yet.

 

yeah its definitely running rich. really rich which makes me think it might be the coolant temp sensor system, because that's the only code its showing. ill head out in a few and check the wires to see if they're crossed or grounding somewhere

and while im out there i might as well clean the plugs and back blow the fuel filter.

 

i should have a little money tomorrow so if all goes well i can go out to the subie grave yard and snag all the sensors off one of our fallen friends

Edited by AKghandi
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I wish I had 10 bucks. But I wont have any cash till tomorrow, so i get to just look at things. But as soon as I can I will definitely do that.

 

Here in a few minutes ill go out and check for anything obvious.. maybe a wire cracked when i was moving things around. I do have a test light so i can check to see if its getting power

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