ZacSquatch
NAXJA Forum User
- Location
- Fairbanks, AK
Friend has a 87' with 4.0, and he's complaining thats its running rich adn belting black smoke. I've searched some and have found a bad o2 sensor may be the guilty party BUT, I had a 94' trooper that had a bad throttle body do the same. Is the o2 the best bet, do the 4.0's throttle bodys have any weak points in this area.
TIA Zac
TIA Zac
