car stinks after o2 sensor change
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Supreme Member

Joined: May 2002
Posts: 1,333
Likes: 1
From: Texas
Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
car stinks after o2 sensor change
Like it says, after I changed my o2 sensor (bosch), my exhaust smells richer. Not like eggs...but like carbon monoxide.
Is it recommended that I disconnect the battery terminal to reset the computer or what?
Could it be somethign related?
Is it recommended that I disconnect the battery terminal to reset the computer or what?
Could it be somethign related?
Supreme Member
Joined: Jan 2002
Posts: 1,322
Likes: 1
From: Bloomingdale,IL
Car: 91 RS
Engine: 305 Tbi (L03)
Transmission: 700r4
You dont need to do anything to "reset" your ecm. It should function properly after the change. Why did you change the o2 to begin with?
Thread Starter
Supreme Member

Joined: May 2002
Posts: 1,333
Likes: 1
From: Texas
Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
why did I change it? Car as 170k mi and I've driven it for 50k of those. Don't know when it was changed if ever. Making frequent road trips this summer and making sure everything is tuned up and working as it should.
Oops....CO is odorless. Brainfart.
I'm sure the point was not lost on you though.
Thanks vader.
Oops....CO is odorless. Brainfart.
I'm sure the point was not lost on you though.
Thanks vader.
Dank is right. You don't have to do anything. The integrator will act on the new sensor data and write new (correct) data tables a little at a time, slowly but eventually skewing the tables downward (lean) until they are correct.
However, if you are as impatient as I am, you'll clear the ECM amd force the integrator to start constructing new data tables right away - Well, as soon as the ECM goes to closed loop, anyway.
However, if you are as impatient as I am, you'll clear the ECM amd force the integrator to start constructing new data tables right away - Well, as soon as the ECM goes to closed loop, anyway.
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