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  1. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Status update: Was way too distracted by the beautiful weather this weekend to do any work on the car. Oh well. Did the Sea-foam this afternoon. Used between a third and a half of the bottle. I was surprised at how long the smoke lasted. Luckily it's always windy up here in the copper...
  2. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    I'd prefer to use a vac line, unless it is possible to pour (not spray) sea foam right into the throttle body? Found 2 vacuum lines that look like good candidates. Can't say I know what their names are, but I attached pictures. First line goes from the "Air Assist Injector Solenoid" to...
  3. Thinking about a 2008 Forester

    New Member Introductions
    I noticed that about Ann Arbor as well. I'm from Livonia, and have many friends at UMich, and see subies all over the place. Must be all the hippies driving imports :lol:
  4. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Thanks Peaty, excellent instructions! Went through the process described here. Didn't use SeaFoam (couldn't spray), but a similar carb cleaner product. Didn't notice any white smoke in the exhaust. Did I not use enough of the product, or does that just mean there was no problem? Maybe the...
  5. Thinking about a 2008 Forester

    New Member Introductions
    If there aren't many foresters in FL, it's certainly not for lack of quality. There probably isn't as much of a demand for the rugged utility, higher ground clearance, and AWD. I'd expect to see more Imprezas in that environment. Don't let that turn you off from the Forester, it's a great...
  6. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Finally an option cheap enough to try that its worth a shot before any more diagnosis. I assume this should be available at my local parts store (even in backwoods Houghton). Do I just use it as a fuel additive, or add directly to engine? Is there a line I can use to siphon it directly into...
  7. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Did some driving around today with the laptop and the elmscan ISO. I was hoping to log the output of both O2 readings in real time. Unfortunately, the polling rate was too slow (~1Hz) to capture the rich/lean cycles. Also, once I had everything hooked up, it turned out the software wasn't...
  8. Will this Hitch work for Forester?

    Exterior and Body
    Seller has a very positive score, and good scores for "Item as described" and "Communication". I say contact the seller and ask what the return policy is if it doesn't fit. Let me know what you end up getting, I'm thinking about a hitch for my 2001 Forester. If this works, it's a great price...
  9. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    BAC5.2 and pleiad7, thank you both for this information. It helps to see more experience with the subaru monitoring system. Unfortunately, there are no stations in the Houghton area that can check my exhaust :icon_frown:. I even tried the Subaru dealership in Marquette (100mi away), to no...
  10. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    I'm good friends with a higher-up engineer at Ford, he told me this with regard to Ford vehicles: I would expect that this is true of the subie, given the environmentalist reputation of the company. I'm not arguing that it can't be a failing O2 sensor. I'm not ruling anything out, because I...
  11. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Is chem-dip safe on the cat? A quick google search turned up cataclean... a fuel additive designed to remove carbon fouling, and looks like its sold only in the UK. It doesn't get rave reviews either. Anybody have any experience with this? Sounds like snake oil, but might be worth a shot if...
  12. Greetings from the Great White North

    New Member Introductions
    Nice. I took a class through the materials department here so i could play with the JEOL SEM with x-ray EDS. Fun little toy. Would be cool to take bits of my catalytic in once I replace it, if it didn't cost so much for scope time.
  13. Does it hurt to see a small paint chip on your brand new car..

    Member Mishaps
    Crazy! Now you have to tell us how you managed to hit a knife...
  14. Greetings from the Great White North

    New Member Introductions
    When in August? I'll be gone for a couple weeks after the 16th... off to colorado for a while and home to the detroit area for a few days... back before the labor day weekend though. Classes start right after the holiday :icon_sad:
  15. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    While this will probably stop the P0420 code and CEL, this isn't fixing anything. From what I gather, this only takes the sensor out of the exhaust stream, rendering it useless (can't be used to check for other problems, like if your cat REALLY goes bad). This is OK if you don't have any real...
  16. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    This didnt set off its own code?
  17. Does it hurt to see a small paint chip on your brand new car..

    Member Mishaps
    For me, scratches and dings from driving too fast on logging roads are a source of pride, but something like this just hurts real deep: I was camping with my fiancee (gf at the time) and her parents. We were in a tent, but her parents were in their popup trailer. We were sharing a beautiful...
  18. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Regarding the CEL timing: it comes back on within a few days of a reset if driven enough, but most of my driving up here is for groceries or to head to the beach, since I ride my bike to/from campus when it's nice enough. If I'm on a longer drive (to/from downstate), it comes back on within 150...
  19. Eastern Catalytic Converter Installation Report

    Problems, Maintenance, and Warranty
    Thanks for the writeup... I am throwing the same code and it's probably the cat (need to check a few things first, probably this weekend). Can anyone else share their experience with other replacement cats?
  20. P0420 - Catalytic Converter Efficiency Below Threshold

    Problems, Maintenance, and Warranty
    Forester 2001 L - Stock 101k Miles P0420 - Catalytic Converter Efficiency Below Threshold The forester has been throwing this code for a few months now, typically shows up on long highway runs (but to be fair, that is the vast majority of my driving). I bought a scanner from scantool.net...
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