my 97 cavalier with the 2.2 and a manual tranny if that makes a difference through code p0137 and as i understand that is my o2 sensor on my cat with low voltage. now my question and no i have not searched for this but it is specific. would this make my gas milage go down and could this be do to the exhaust leak that i have and if it does how bad would it have to be to do that...

oh and im new here,
Hi my name is brandon. i drive a 97 5speed cavalier rs. thanks for looking and anyhelp would be apprieciated.

yes..

An exhaust leak can cause the low voltage reading (lean) and therefore the ECU will richen up the a:f mix and your mileage goes to hell..

paul bateman wrote:yes..

An exhaust leak can cause the low voltage reading (lean) and therefore the ECU will richen up the a:f mix and your mileage goes to hell..

for a precat sensor, not post cat.



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sorry.. yeah... didnt realize the code was post-cat...

it was early in the morning.... lol

and bank 1 sensor 2 is the post cat oxegen sensor isnt it?

ok i didnt see the third post.