Having problems with your 1998 Cadillac Seville ?

Oxygen sensors How many oxygen sensors does a 1998 Cadillac STS have?

Posted / edited by AnonymousUser on : 26-07-2021

Answers :

If you have the northstar you have 4  O2 sensors.  one in each exhaust header.  one before the cat converter & one after the converter
Repair Help & Product Troubleshooting for 1998 Cadillac Seville

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