Originally Posted by BriGuy_1971
I found out this morning it's the front, not the rear.
The dealer is telling me there were no other codes given, so there are no sensor problems or anything else amiss, just the cat itself. They say the car is in such good shape, there isn't another problem that caused the cat to go bad - it's just worn from use/age.
Eastern Catalytic itself referred me to a site called www.dropshipparts.com
that has the part - #40389, which is a direct-fit - for $210 shipped. Trying to decide if I should go that route or bite the bullet and run up the ol' ccard for the dealer's, which is $545.
But... they insist that there has to be another problem that caused the cat to fail. Dealer tells me there isn't. ??? Should I push the dealer to check the car for a cause of the cat failure?
#1) Age of the cat in your case, the materials in the CAT have a finite lifetime. #2) Probably at some point recently or otherwise, unburned fuel igniting in the precat.
I removed mine this year for my header, bought new F&R O2 sensors (welded into the old cats) and put an Eastern Cat on the rear, put the boat anchor on the shelf. Car has always passed emissions easily, including our new wonderful CT program which other than having higher limits, is in many ways just as bad as CARB's.
If you spring for staying OEM in front, by all means get a more definitive answer on the failure. If it got toasted, that's largely visible when you pull it and look down into it. In the most extreme case, my Magna Cat on my Sentra SE-R blew all the guts out the tailpipe after breaking up over time. Cause - running rich and lighting up the mixture after
The Eastern cat I bought for my first gen was a lot cheaper (rear cat) - maybe $150. The top (front) pre-cat is pretty restrictive and is a band-aid solution to reduce emissions largely due to the need to create flow into the EGR and make up for a poorly designed manifold.
Me? Pick your header, replace the O2 sensor front, since the old one is probably toast. Don't buy an OEM cat, that's crazy.