...Today I had to travel south to RSF in San Diego...Before I left I wanted to get some things replaced before I wound up broke down away from home..
...So, I got some goodies installed today...
..First thing this a.m. I replaced both o2 sensors..Upstream and downstream but on the 2.3l they are known as Bank1 and Bank2...
..I replaced them with Denso parts and the leads on them were about 3" longer then he ones I removed..
This made me zip tie the down-stream's lead into a loop and i would like to tie the upstream lead off to keep it away from the exhaust but I might have to drill some type of an anchor to the firewall..
...Then I headed over to the muffler shop...It's a first for me but I now own a Magnaflow muffler..
..I got a 14" Stainless, flow thru, Magnaflow muffler installed and any possible exhaust leaks fixed..:biggthump
...Seems that my previous flow thru that was waranteed and replaced under warranty, was replaced with a chambered muffler by a previous shop...I believe this is why this one prematurely failed as I use the back pressure to decelerate a lot in this truck..
..Since I didn't reset the computer when I added the new o2's and just got the muffler installed, the Ranger was all of a sudden quick as a whip and the exhaust would get obnoxious with fast acceleration..
...I ran over to my buddies shop to verify the o2 readings and now the downstream runs about 1/2 of the upstream sensor..For example, upstream = 750 and downstream will read about = 450 and both raise and lower with the rpms as they should...
..I believe even though the upstream controls fuel trim, the downstream was keeping the motor running lean..
...By this afternoon the computer took over and everything went back to pretty much normal..
..I did however run down to RSF with the truck completely loaded and the truck did have a bit more power and I might have gotten a little better fuel mileage..:scratch:
..I'm waiting for the day I can empty the Ranger out again and see if this was a big improvement...