LisaG

The saga continues........ I have a '97 Subaru Legacy Outback. Anyone know how to check and see if the sensors are good or bad without a scan tool? Are there resistance readings? Thanks! Lisa

Anybody out there?? P l e a s e H e l p

Hello, We've been having a problem with my Subaru sputtering and stalling off and on now. Have replaced the Mass Air Flow Sensor twice now (codes were showing it was bad), to no avail. Took it to the Subaru dealer and they found code P0102 for Mass Air Flow Low Input. Checked and cleaned connection at Powtertrain control module and sent us on our merry way. Thought we were good to go - drove it about 20 minutes, 3 hours later went to drive it back home and the bleeping thing starts doing it's whole stall song and dance again. Subaru said if the problem returned then the Powertrain Control Module may need to be replaced to the tune of $685. We've already spent $500 between diagnostics and MAS.......... Questions: How likely is it that the Powertrain Control Module is the problem? How hard is it to replace (I've got a mechanically savvy hubby fortunately)? Can you purchase one on ebay or through a wrecking agency, or is it only worth buying new? Thanks! Lisa

Hi, I have a '97 Subaru Legacy Outback. Mid-May during a very rainy weekend it began to sputter while driving on the freeway (felt like I had taken my foot off of the accelerator suddenly and then abruptly put it back on) and the check engine light came on. Pulled over and it stalled, managed to get it the rest of the way home. We took it to the mechanics and they said the computer was showing a problem with the mass air flow sensor, would cost around $700 to replace it, but they couldn't be positive that was exactly what was causing the problem. We decided to put off repair and see if the problem persisted. Ran fine during dry sunny weather and would act up again when it began to rain. Hubby decided to go ahead and replace it himself so we ordered it from AutoZone. For a couple of days it seemed like all was well, no sputtering, stalling, and no hesitation with acceleration. Then it started up again - not as bad at first, and now we couldn't blame it on rainy weather. It was dry and sunny. Took it to the mechanics again and this is the information that came up "codes that came up were P0102, PO103, PO301, PO302, PO303 and PO404, first 2 codes for air flow signal, signal too high and too low, other codes are misfire codes on all 4 cylinders, mass air flow reads too high at idle 5.1 grams/second, should not exceed 4.8, data showed while cruising that mass air flow will stick at 199.1 grams/second and should be 2.6-16.5 grams/second, circuit from PCM and from MAS to PCM checked good, all data shows mass air flow sensor is fault". We thought perhaps we had a bad MAS, so we took it back to AutoZone since it was still under warranty. New one was received and installed. Interesting to note - this time with installation the check engine light went out. Went to drive it the next day, check engine light stayed on when I started it and before I could pull it out of the garage it stalled. Needless to say, hubby and I are both at the end of our ropes. We are wondering if there's some other part that's bad that's causing the MAS to go bad? We're also wondering is there something that needs to be reset or callibrated when a new MAS sensor is installed? We're about ready to take it to the Subaru dealer for repair - but I'll be really upset if they say it's the MAS after we've replaced it twice! Any help and suggestions would be GREATLY appreciated. The car's nearly paid off and I'd love to enjoy a few months without a car payment Thank you! Lisa