Jeepcrush4
NAXJA Forum User
- Location
- Flushing new York
1997 Cherokee sport. I changed over to synthetic about 500 miles ago. Tonight while driving(cruising) the check gauges light lit up. Usually the oil pressure needle is at 50psi at 65mph. It started fluctuating from 20 tp 40 psi in slow to medium increments(in ping pong fashion). When I would come to a stop or slow down pressure would stay somwhat stable at 40psi. Are oil pressure sending units known to fail on the 4.0l? Where exactly is it located? I used a mobil 1 filter and valvoline synthetic, but doubt it has anything to do with it.
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