NEWBIE

TAHOE328 · September 2, 2004

THIS IS AN AWESOME WEBSITE. I HAVE A 2000 TAHOE LT, 5.3. I RECENTLY HAD A NEW EXHAUST INSTALLED. THEY PUT ON TWO FLOWMASTER 40SERIES, TO MAKE IT A TRUE DUAL EXHAUST. SOUNDS REALLY GOOD, NOT TOO LOUD. MY PROBLEM IS MY REAR O2 SENSOR, KEEPS CAUSING SERICE ENGINE LIGHT TO COME ON. I RESET THE CODES, IT SAYS THAT THE REAR O2 SENSOR HAS LOW VOLTAGE. I AM ASSUMING THIS IS BECAUSE OF THE NEW EXHAUST. I ALSO THINK THAT I AM GETTING TO MUCH OF A FUEL MIXTURE. NOW I HAVE BEEN GETTING 14.5MPG IN TOWN SO NOT TOO BAD. DOES ANYONE HAVE ANY SUGGESTIONS ON CORRECTING THIS PROBLEM?

THANKS

PAUL

facn8me · September 5, 2004

Why all the yelling? Anyway did you leave the cats on? If they are gone it will set o2 code. If not maybe the sensor has gone bad. It happens. How many miles?

TAHOE328 · September 7, 2004

Why all the yelling? Anyway did you leave the cats on? If they are gone it will set o2 code. If not maybe the sensor has gone bad. It happens. How many miles?

<{POST_SNAPBACK}>

I wasn't yelling caps was on

Anyway, I did leave the cats on. I took a look at the rear O2 sensor yesterday and it looked like when the put it back on they might of got it too hot. I only have 53000 miles. How do I replace that sensor? Is it something I can do in the driveway? Thanks for your help.

Paul