nydavid21 Posted September 16, 2008 Share Posted September 16, 2008 Check engine light came on. Dealer says I need a new catalytic converter (driver side) for about $1000 parts + $300 labor. He thinks O2 sensors are ok. The car has about 120,000 miles and the O2 sensors were never changed. Various websites suggest that a failed upstream sensor will mess up the cat, so replace the sensors if you need to replace the cat, they suggest. So, looking at various oxygen sensor sellers, I see items labeled front, rear, back, upstream, downstream, and left and right. The dealer told me I have sensors before and after the cat, but what's up with left and right? Do I have 4 sensors? Are there 2 for each of the two cats? Are they really made differently for left and right? I want to replace all 4, and also replace the failed cat, which is on the driver side. Can anyone tell me where the sensors are located and how to I identify the type I need with respect to left and right, front and back, etc. I was thinking of Bosch sensors. Any suggestions on where to buy the cat? I've seen prices around $200. I'd love a link to a factory repair guide. Any ideas on that? Thanks! Quote Link to comment Share on other sites More sharing options...
TRD911 Posted September 17, 2008 Share Posted September 17, 2008 Check engine light came on. Dealer says I need a new catalytic converter (driver side) for about $1000 parts + $300 labor. He thinks O2 sensors are ok.The car has about 120,000 miles and the O2 sensors were never changed. Various websites suggest that a failed upstream sensor will mess up the cat, so replace the sensors if you need to replace the cat, they suggest. So, looking at various oxygen sensor sellers, I see items labeled front, rear, back, upstream, downstream, and left and right. The dealer told me I have sensors before and after the cat, but what's up with left and right? Do I have 4 sensors? Are there 2 for each of the two cats? Are they really made differently for left and right? I want to replace all 4, and also replace the failed cat, which is on the driver side. Can anyone tell me where the sensors are located and how to I identify the type I need with respect to left and right, front and back, etc. I was thinking of Bosch sensors. Any suggestions on where to buy the cat? I've seen prices around $200. I'd love a link to a factory repair guide. Any ideas on that? Thanks! nydavid21 Welcome to the board. Cats do go bad. The post cat O2 sensor only monitors catalist performance and it will through a code if there the computer thinks there is an issue. I have purchased O2 Sensors in the past from a guy on Ebay. The sellers name is evalero1 his email is evalero@hotmail.com. Here is a link to a seach with all of his items. http://search-desc.ebay.com/search/search....o=&saprchi= Very easy to deal with and his prices cannot be beat. I have a complete manual on CD for the 98-2001 GS I would love to have a bad cat so that I can make a test pipe and get ride of the Cats. Maybe we could swap for a bit.. Let me know, BP Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.