Need Help?

2004 Buick LeSabre Custom 4dr Sedan

2004 Buick LeSabre
Trim Info:
Front Wheel Drive, 4 Dr Sedan Custom, Large Car
20 mpg city / 29 mpg hwy
Other Trims
Do you own this car?
Estimated Mileage
 Miles
Enter current mileage for most
accurate info about this vehicle


Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.

back to question list

Ask the Community

Ask Our Auto Mechanics


February 19, 2013, 9:51 am

Steve Z
 

Question: O2 sensors

I have codes saying I have bad O2 sensors, bank 1 - sensors 1 and 2. I replaced both the upstream and downstream sensors, but I'm still getting the codes. In addition, the car is running rough, and has poor power at initial start.


February 23, 2013, 6:44 pm

Ron W
Expert Mechanic

The codes are probably why it is running rough.

If you replaced the sensors already, I'd suspect a wiring issue. Possibly something is pinched or melted which is still causing the codes.


0/0 users found this helpful.

February 25, 2013, 6:48 am

Steve Z
 

Thanks Ron. Your suggestion of electrical issues made me wonder about an O2 sensor fuse. Turns out there is a fuse, and not surprisingly, it was blown. More than likely this was the entire problem from the beginning, but with 88,000 miles, it was probably worth changing the sensors anyway. So far so good with the new fuse. Thanks.


0/0 users found this helpful.

Ask our panel of certified auto mechanics a question. We pay for their advice so you don't have to



My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…