Happened Sunday as I rounded a curve. Had the code cleared and now 2 days later the light came back on. Thrush Turbo Mufflers have the classic Thrush sound and have a tested reverse flow design. All Imprezas benefit from improvements in performance, refinement and safety. Introduction Subaru has always marched to the beat of a different drummer, and rather than try to compete directly with the small sedans from Honda and Toyota, Subaru goes its own way by offering a few things those mainstreamers don't: big power, all-wheel-drive and a wagon body style.
I may drive the car around a bit at a higher rpm, as was mentioned above. There may also be some firm ware update for your car as well that may address the issue. Exhaust Brands To Make Your 2002 Subaru Impreza Last Simple repair, complete replacement, or a full rebuild. Justin Hi Paul, If the Cat is restricted with Carbon, that carbon will prevent the light off temperature from being realized, if the carbon can be cleaned the Catalyst may return to the light of stage. Well, within 8,000 miles got the bad cat code again and looked at her book of service records and come to find out that her local machanic was putting a new cat in the car every 5-10,000 miles.
After dumping money into these repairs, last thing I want to find is that I now need more expensive repairs. You can try higher octane fuel and harder driving to build up Exhaust Temperature. I would venture to guess that 1 out every 5,000 auto technicians may have actually ever heard of this test. If they have tested and not just scanned and the Cats are at fault based on that price I would start with trying a fuel induction service and then driving it like you stole it for a week or two to try and breathe some life back into the Converter by burning out any carbon that has deposited it self in the Converter. If cerium is contaminated or the converter overheats, the converter is damaged.
I love the car, but the head gaskets were leaking. I reset the code and let the wife drive the car normal driving for a week and it will not throw the code. He also checked the sensors and said they were ok. I have driven the car as a daily driver ever since. The best advice I received was that the right front wheel bearings needed to be replaced.
No matter the job, your 2002 Subaru Impreza demands trusted brand parts and products to keep it running. Maybe you just need a couple of Exhaust products or parts. From there use the graph as a example of what to look for. I really like your website and it has provided a lot of information to me on the P0420 code on my 2000 Subaru Outback. At the time of purchase we took it to a Subaru dealership of our own choosing and paid for a multi-point inspection the same one they do for certified pre-owned cars. Since it is payed off, instead of paying car payments for a new one I am setting aside monthly some car funds. Unless the Catalyst is getting no where near the light off point? If the Rear O2 sensor was tested out side of the data you gave me than yes the Catalyst is not reaching light off and will need to be replaced to satisfy the check engine light and the P0420 code.
Do you think it is possible that in replacing the front sensor I managed to contaminate the cat somehow? If its over 80,000 miles than you should budget for a Catalytic converter Replacement in the Future. I have been now reading other posts and beginning to wonder. Fast forward to today and Thrush Mufflers are still the preferred muffler of muscle car and hot rod owners across the land. At 60,000 mile maintenance, dealer replaced valve cover gaskets and timing belt. Thanks very much Craig Hello Craig, I also have not yet seen a Tribeca with a Failed catalyst and kind of question the Post catalyst O2 sensor based first of all on the Statement that there would be a different code, which is not always factual. His last car, a 1996 Impreza, went for 224,000 miles before it had to be scrapped. This will be covered by that fund.
It seems to run fantastic! Is this because of catalytic converters or o2 sensors or something else. New items that have been installed or altered are non-returnable. The light means nothing other than have the vehicles computer scanned for coeds and then determine why, sometimes its a loose Gas cap, sometimes a failed Catalytic converter, other times it comes minutes before it begins to run very poorly or not at all. The regulations for new cars also increase every few years as well which make it very difficult as what was perfected two years ago must now be redesigned to meet tougher standards. . Any chance a remaining leak could be the root cause of this code? Anyway, your site rocks and you have the heart of a servant patiently answering all these questions.
Then again it came on. The data generated is only as good as the sensor, so the sensor must be tested first. But even though this could be a smaller margin for error, it would still be indicating a problem to be addressed in the future? I purchased the car for the size, all-wheel-drive, and manual transmission and consider it to be a small sport-wagon with corresponding cargo capacity. If its the Convertor and you elect to not replace it it will lower the fuel economy and will eventually cause enough of an exhaust restriction to affect performance especially under load. The why is learned data that has been lost typically with light of parameters, coolant temperature and maybe engine repairs that make changes in Combustion temperature such as replacing leaking head gaskets. What do you really expect to achieve? What must be done next is to determine the correct answer to that question, by testing the rear o2 sensor and by performing a catalytic converter efficiency test and evaluating fuel trim. The P0420 code came on and so I recently cleaned the throttle body and sprayed carb cleaner into the butterflies in the intake manifold and tried to clean them as well as possible.