6th Gen ('00-'05): Increase your mpg/fuel economy
#22
The other O2 sensor on these cars is where the U-bend is in the exhaust and is after the Cat. These are not as important as the pre-cat and just pretty much monitors what the cat is doing. I don't typically replaced these unless they set off a code for that particular one.
On all of my newer vehicles that have the four wire sensors I replace the pre-cat O2 sensor at around 100,000 miles. On my car with a one wire sensor, I replace every 30,000 miles.
Even though you won't see any regular recommendations from the factory on O2 sensor replacements as a maintainence item, there is a lot of info out there that regular replacements are beneficial.
If you ever have a scanner hooked up to the car and look at the pre-cat sensor values as the car is running and the sensors are switching at a slow rate, that is a pretty good indication that the sensor needs to be replaced even if the CEL is not on. Good luck.
Wayne
#23
i would do a tune up as in change the plugs with new ones. it will help as well i have the 3.5 but i did mine at 60k and again at 100k just to get them out of the way and start fresh because i do a mix of driving city and high way. more highway and very few city driving. but i would do a tune up as well as every thing sugested because some thing is not right because getting that low milege is wiered.
#25
I am averaging 28.1 over the last two tank fulls. I got 487 miles out of my last tank of gas.
Keep in mind, my Monte has the 3.5L and I do 90% hwy driving. If I really jump on mine a lot, and drive it over 80mph, it gets more like 25MPG. All city, dips me down to 21ish.
Keep in mind, my Monte has the 3.5L and I do 90% hwy driving. If I really jump on mine a lot, and drive it over 80mph, it gets more like 25MPG. All city, dips me down to 21ish.
#26
I can usually squeeze around 325 miles out of a tank before it needs filled. Honestly it could probably go to around 350 miles on a tank but I never let it dip that low since it can damage the fuel pump.
I average around 17-20 MPG depending on where I'm working, which route I take, and how hard I get on it from time to time.
I average around 17-20 MPG depending on where I'm working, which route I take, and how hard I get on it from time to time.
#29
Ok so heres the deal my upstream o2 sensor just came in i ordered it from 1aauto.com, i got my seafoam and my chevron techron ready, but im thinking should i wait to fix my oil leak because i know you have to change the oil after using seafoam. So should i wait to fix the leak or just wait till i have a little bit of gas left to do the seafoam, chevron, and replace the sensor?
#30
You can change your sensor while adding the seafoam in the gas tank.
Where is your oil leak coming from?
I would add the seafoam in the oil, run it for approx 200 miles, then change your spark plugs/oil and also fix your leak at the same time.
Where is your oil leak coming from?
I would add the seafoam in the oil, run it for approx 200 miles, then change your spark plugs/oil and also fix your leak at the same time.