Hey everyone I just got a 99 durango I have a miss an its running rich but the scan just saying multiple misfires could the map do this or th o2 sensor s has new plugs wire cap so on new sensors on the throttle body except map sensor if I'm just barely giving it gas it's OK but starts misfires when I give it gas the only other thing I need to replace is the disc looking thing in the distributer I can't recall the name of it but can look if someone needs to know. It is running rich an I thank that's thats cousin the misfires

 

Which engine? What plugs got installed?

 

5.2 an cheap auto lite plugs i was thinking it was them the owner from before just put them in right before I got it I been thinking about buying some good ones it had plugs wire in wrong spot when I got it it ran ok for few days after i fixed that then done same thing

 

The autolites are likely just fine. These engines really don't care for the rare earth plugs. You end up with mystery misfires.

What kind of shape is the cap/rotor/wires in? May also want to take a look down the throttle body, into the intake, see if you see oil pooling in there. (common problem on the magnum engines.)