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Old 07-16-2006, 09:24 PM   #1
MadDogSTi
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Default 98 RS MAF Problem

I've changed the MAF for the 4th time now and I don't think the damn shop would let me get anymore MAFs. The CEL that usually shows up is P0102 - MAF Low Input or sometimes P0103 MAF - High Input. My car only has 106K miles with FRAM paper filter, stromung dualtip catback.

My muffler also has this weird smell to it. Whenever I floor it on neutral, black liquidy stuff would come out, my friend says that my car's engine is clean. I'm also guessing that it has black liquid is because of carb build up on the muffler tip.
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Old 07-16-2006, 09:57 PM   #2
MonsterRallySport
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It is probably just moisture mixed with carbon...?
The MAF, What brands have you had installed?
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Old 07-16-2006, 10:56 PM   #3
MadDogSTi
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After the first MAF on my car died. I bought a K&N air filer and after I installed that K&N air filter, every MAFs has gone bad and it's always P0102, I can't even rev pass 3Krpm(makes rpm very hard to climb).
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Old 07-16-2006, 11:27 PM   #4
MonsterRallySport
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What brand(s) have the MAF's been?
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Old 07-17-2006, 12:35 AM   #5
MadDogSTi
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The MAF, I dunno. It looks like they(Subaru?) just changed the MAF but use a used housing. It looks completely like the stock MAF.
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Old 07-17-2006, 01:58 AM   #6
MonsterRallySport
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Ohhhh.... If subaru did it then it's OE..... I don't know..... I figured that they were remaned MAF's....
It is very possable that it is in the computer.... Or the wiring...

You'd think after the 2nd or 3rd one, subaru would diagnose the actual problem.... I hate dealers...
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Old 07-17-2006, 02:19 AM   #7
MadDogSTi
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I ordered mine from Advance Auto Parts with a little help so I'm saving a lot but it's no help cause this is the LAST MAF I'll ever be getting.

Could a vaccum leak also cause MAF to go bad? But doesn't the vaccum leak come after the MAF?

I was using the K&N Air filter for 1 AutoX, daily driving and I'm thinking about spraying some brake cleaner onto the intake box and spraying some carb cleaner into the throttle body. I'm still lost on how to clean the MAF Plug.
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Old 07-17-2006, 02:48 AM   #8
MonsterRallySport
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You need to get an OEM MAF! Or BOSCH.. No a vacuum leak will not cause MAF failure.
Yes, Vacuum comes after the throttle body...
If you decide to use Brake clean; Remove everything, and spray it on the walls of the intake hose... I'd take a cup, fill it with brake clean, and stir the MAF tip in it (don't use styrafoam or plastic, use glass)

If the MAF is oilly, that may be the cause... Most auto parts stores use remanufactured or poorly built MAF's... OE is the way to go...
If you try one more, try OE.... If it throws another code, you may have a problem with the ECU...
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Old 07-17-2006, 02:09 PM   #9
MadDogSTi
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I just got my MAF today and the car is running good, I guess. Whenever I shift to neutral when coming to a stop sign/lights, the rpm would drop to 1Krpm, then when I'm at a complete stop, the rpm would idle going from 200rpm to 800rpm. If I reverse then the car feels like it's going to die.

If this one goes bad then I guess I'll have to get one from the dealership. Though, it'll cost more. $290!!!!

One more thing I forgot to mention. I'm currently running with a '96 Legacy intake, it goes from intake box to the motor, it doesn't have that BIG BOX like it would with the RS Intake.
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Old 11-09-2006, 04:51 PM   #10
RUBEN
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Default MAF Issues

im having the same issue with a 97 GT Legacy, how did you make out with this . Thanks
Quote:
Originally Posted by MadDogSTi View Post
I just got my MAF today and the car is running good, I guess. Whenever I shift to neutral when coming to a stop sign/lights, the rpm would drop to 1Krpm, then when I'm at a complete stop, the rpm would idle going from 200rpm to 800rpm. If I reverse then the car feels like it's going to die.

If this one goes bad then I guess I'll have to get one from the dealership. Though, it'll cost more. $290!!!!

One more thing I forgot to mention. I'm currently running with a '96 Legacy intake, it goes from intake box to the motor, it doesn't have that BIG BOX like it would with the RS Intake.
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