Kharl Posted May 20, 2016 Share Posted May 20, 2016 (edited) Hi!i have read that on this model there is not areally an appreciable difference in gas mileage, i know it is forkeeping the gases wihtin the manufacturer range... but usually itimproves the fuel mileage since without it (the o2 sensor) the system bydefault would set to a rich mixture...after installed the newo2 sensor, the check engine light went off and the mileage increased by0.6 or 1mpg (several method to measure)but i wonderplease, check the image i know the sensor should be installed like the no. 1 exampleBUT mine (after relocated, because this vehicle had catalitic removed)themuffler guy installed like the no. 2, he told me that the o2 sensordoes not need to be in "full" contact with the gases, that only needs a"little" doze of the gases in order to make its job....not toosatisfied with this, i wanted to ask you if i should go back to themuffler shop and make him to desolder the o2 sensor socket again and tomake him to solder at its correct level so the part of the o2 sensorthat must be exposed to the gases is fully exposed?just like the no.1? Edited May 20, 2016 by Kharl Quote Link to comment Share on other sites More sharing options...
987687 Posted May 20, 2016 Share Posted May 20, 2016 If you're talking about the rear o2 sensor, without a cat the second method will generally work better and keep the engine light off. The rear o2 sensor doesn't do a whole lot for engine tuning, it's mostly emissions. If you're talking about the front sensor, it needs to be fully is the exhaust stream or you'll have the wrong mixture. Quote Link to comment Share on other sites More sharing options...
Kharl Posted May 20, 2016 Author Share Posted May 20, 2016 If you're talking about the rear o2 sensor, without a cat the second method will generally work better and keep the engine light off. The rear o2 sensor doesn't do a whole lot for engine tuning, it's mostly emissions. If you're talking about the front sensor, it needs to be fully is the exhaust stream or you'll have the wrong mixture. thank you for answer this vehicle only has one o2 sensor Quote Link to comment Share on other sites More sharing options...
987687 Posted May 20, 2016 Share Posted May 20, 2016 I assumed you have an EJ subaru which have two sensors in the US. What exactly is your car? Quote Link to comment Share on other sites More sharing options...
Kharl Posted May 20, 2016 Author Share Posted May 20, 2016 I assumed you have an EJ subaru which have two sensors in the US. What exactly is your car? Subaru Legacy 93 L Station Wagon FWD USDM Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.