Quote:
Originally Posted by Rusty94cx
I would guess plugged cat by the one pic with 02 out heck at 75 in 4th gear it's 3000rpm. Yes 2000-2100 5th get 65 2500 at 75. I would say trans is biggest mpg hog. Then check cat. Use vacuum gauge. Heck see if it run better with the 02 unbolted.
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Definitely wrong trans.when i unplug the o2 sensor definitely runs better
Possible to just gut the cat? Or shud i just replace it