I have copper plugs new wires and distributor. Fuel pressure stays <1-2 within desired range during stumble. I don’t have a scan tool lol I should probably invest.
I’ve got a 95 xj 4.0 aw4 upsized to 2.5inch exhaust with banks header. Just wondering about o2 sensor placement. Been having a stumble and misfire at 3000 rpm’s and when cold start.
Replaced or tested good
All sensors all clean voltage. Ones that were replaced were OEM mopar according to Napa...