I have a CEL and here is what the OBD II said... 171 and 174 That is a lean bank on 1 and 2. It started about 60 miles after I cleared out my precats and added the 2 MIL eliminator on the bottom O2 sensors... now I have a light! I only took off the y-pipe and did not remove the upper O2 sensors. First I tried a pair of MIL Eliminators that solder in and then after the light came back on, I added a set that clip in. However, I did not remove the first pair.(so I have 2 pair on) The car gets about 24 MPG on the highway and 14 MPG in town. It smells like it is running rich! Please help! I've lost some power and the Gas milage is killing me!
By the way, this is a 1999 2.5 V6 Cougar.
