How many O2 sensors?
gmbwrenchn
01-19-2008, 05:10 PM
97' Corolla 1.8Ltr. How many o2 sensors are on this car? Thanks.
Scotty89
01-19-2008, 11:11 PM
There are 2 sensors. One before the converter and one after. The one before is usually in the exhaust manifold, and the second is usually close to the converter.
gmbwrenchn
01-21-2008, 08:35 PM
Thanks. Isn't one upstream and the other a downstream?
Scotty89
01-21-2008, 10:08 PM
The one in the header is the upstream and the one down by the converter is the downstream one
gmbwrenchn
01-22-2008, 05:45 PM
Thanks.
Scotty89
01-22-2008, 06:16 PM
No problem, happy to help
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