View Full Version : O2 sensors

04-09-04, 07:06 AM
Wher do the o2 sensor or sensors go in the exhaust system? If I got dual cats which ones do you get? The ones with the o2 sensors or just one with a o2 sensor and one without or both without and it goes somewhere else? Help

04-09-04, 09:22 AM
Should be on the exhaust manifold and somewhere's around the catalytic convertor.

04-09-04, 12:05 PM
On my 95 LT1 there are two 02 sensors, one for each exhaust bank of the engine. They screw into the exhaust between the manifold and the cat.

04-10-04, 06:46 PM
There's actually three sensors.One on the driver's side. Two on the passenger side, one before the cat and one after the cat. The one after the cat is so the ECM can monitor the cat efficiency which is a FED requirement.