So my 95 limited ZJ(5.2) does this intermittent thing, sometimes going up a decent grade it'll kinda chug, like it's got no power, throttle position doesn't seem to change anything. And sometimes it'll shut off an not want to start again for a bit. I've found if I pull the key out and count to 5 it'll fire right up an be fine. It doesn't happen all the time, just once in a while. I live in southeast Alaska, lots of moisture and condensation, not terrible amounts but more than the national average. but this is a "down south" rig that's only been in Alaska about 18 months. Virtually no rust. Actually fairly pristine for a 20 year old daily driver--almost at 150k on the odo. When it doesn't want to start, It turns over fine, it's not a voltage/starter issue, it'll kinda fire up, spin the motor over a couple times an lose rpms till it stops completely. But a few moments later it's ready to rock again.