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yes the 2nd o2 is for a cat monitor..... Posted by jak [Email] ![]() ![]() In Reply to: Isn't the 2nd sensor there to check the cat is working?, BillJ, Sun, 7 Jul 2002 16:56:13 Members do not see ads below this line. - Help Keep This Site Online - Signup |
2nd o2 voltage hot will ideally be about .5v flatlined with a good cat. with a bad or no cat they both swing the same in closed loop the ecu picks up on this & throws a cat efiency code
take care
JAK
posted by 63.50.83...
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