Re: 96 318ti check engine


"19831993ranger" <alexandermancin@xxxxxxxxxxxxx> wrote in message news:5f64032908534c831f36501a2cf13166@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
hey thanks for the reply..

the first code i had was 0420.

catalyst system efficiency below threshold bank 1.
then i bought 2 o2 sensors, and replaced them, then i cleared the check
engine lite.

i stayed for about 2 hours then these new codes flashed.

but before i changed the o2 sensors i changed the exhaust system.

so what do you think


I think you are spinning your wheels.

I would not have changed both sensors with the P0420 code, I would have only replaced the one after the CAT. I have too much confidence in the CAT because I think they seldom, if ever, actually fail. And, in the unlikely event they do fail, they clog to the point that you experience drivability problems.

But, it's water under the bridge.

I think -- and I didn't see you address my question earlier -- that you have managed to bungle the wiring somehow, OR you actually have bad heaters in both of your new O2 sensors. Did you get new sensors, or did you go to the junk yard and harvest them from a wreck?



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