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-   -   OK to drive SW2 with O2 sensor completely removed? (https://www.saturnforum.com/forum/saturn-s-series-sedan-27/ok-drive-sw2-o2-sensor-completely-removed-13040/)

Bud Apr 19, 2024 11:10 AM

OK to drive SW2 with O2 sensor completely removed?
 
My 1998 SW2 is on its last legs. It has about 290,000 miles on it. Lately it has been losing power and won't upshift until the RPMs are about 3500. Two local shops refused to work on it. I found a guy who did. He cleaned the throttle body and replaced a broken EGR valve. After he was done the car barely ran at all. His explanations ran from a clogged intake manifold to a bad catalytic converter. Finally, so I could at least drive home, he removed the O2 sensor completely. Now the car runs decently but it's very loud because the exhaust is venting out where the O2 sensor was. I realize I can't drive this much longer but need transportation until I can find something else. So my question is, can I drive short distances with the car in this condition? My concern, besides the excessive noise, is that the heat from the exhaust venting where the O2 sensor was may damage the radiator or other parts.

DropDead Apr 19, 2024 05:33 PM

Just cut the cat off and have a pipe welded in? No aftermarket available?

Bud Apr 19, 2024 06:02 PM


Originally Posted by DropDead (Post 72657)
Just cut the cat off and have a pipe welded in? No aftermarket available?

Thanks for the reply. There's no pressure through the EGR valve because, apparently, the intake manifold is clogged. So he removed the O2 sensor and now the exhaust comes out there. So my question is can I drive it like that or will the heat from the exhaust damage the radiator?

grcauto8453 Apr 19, 2024 07:47 PM

Your intake is NOT the problem. Your cat is plugged.

Bud Apr 19, 2024 07:56 PM


Originally Posted by grcauto8453 (Post 72662)
Your intake is NOT the problem. Your cat is plugged.

Got it. Thanks!

derf Apr 19, 2024 10:32 PM

What HE said.

Cat only replacement under 150
cat + flex pipe Plus down pipe closer to 200

Recommend option b as the parts will no longer be available for the rest of the system when you need them and it's not that much more money

Bud Apr 20, 2024 07:38 AM


Originally Posted by Bud (Post 72663)
Got it. Thanks!

The error code is P0401. Can you help me understand how P0401 code relates to catalytic converter?

https://cimg9.ibsrv.net/gimg/www.sat...948e6ff473.png

Rubehayseed Apr 20, 2024 08:15 AM

derf has a procedure for cleaning out the EGR tube. I'm sure if you ask him nicely, he'll either explain it to you or post a link to it. It's not really complicated but it's kind of messy. Especially if you don't follow his directions.

Bud Apr 20, 2024 09:30 AM

I appreciate the replies to my thread. At the same time, my original question has gone unanswered: "So my question is, can I drive short distances [with the O2 sensor completely removed]? My concern, besides the excessive noise, is that the heat from the exhaust venting where the O2 sensor was may damage the radiator or other parts." Thanks again.

grcauto8453 Apr 20, 2024 09:53 AM


Originally Posted by Bud (Post 72676)
I appreciate the replies to my thread. At the same time, my original question has gone unanswered: "So my question is, can I drive short distances [with the O2 sensor completely removed]? My concern, besides the excessive noise, is that the heat from the exhaust venting where the O2 sensor was may damage the radiator or other parts." Thanks again.

Drive it. You won't have fuel control but I'm thinking you don't care about that.


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