Hi, i have Subaru legacy 91, noticed that my O2 sensor was failing fuel to bad odor to gas in the exhaust... so i replaced it for a new one(universal i had to crimp the wires myself), the idle was nice, no more bad smell of gas, i went for a test just around the block with no issues. But today i went to work and when tried to accelerate (between 2k-3k rpm) the engine hesitate, I had to release the pedal and start in low rpm's. I didn't have that problem before replacing the O2 sensor...
Wat happened? I though it will be better. May be the new O2 sensor is bad? any ideas?
Thanks for you help.
