It is a 2005 Rubicon with an automatic transmission and 167,000 miles. Had the check gauge light come on a few months back due to low oil pressure. I change out the oil pressure sensor, no luck. I then had to wait 6 weeks to changed out the OPDA with a new Crown OPDA. (Crown OPDA out of stock everywhere) Thought I had it fixed until yesterday. Ran on the highway at 65 mph for half hour. Got off the highway and came to a stop light and lost oil pressure again. Oil pressure comes right back up as soon as I start to move. Also, if I put the Jeep in neutral at the stop light and rev the motor to 1,100 RPM, the oil pressure comes up and is fine as long as I keep the RPM's up. Once the light turns green, drop the RPM to 600 and put it back into gear and drive off no problem with the oil pressure. The low oil pressure only happens if I drive it long distances or at highway speeds. If I just run around town at 45 mph doing short trips, the oil pressure doesn't drop at any stop light. No check engine lights and otherwise the Jeep is running great. Give me your thoughts. I am afraid it's time for a new camshaft, but maybe I'm missing something. What does the forum wisdom think?? Thanks for any help.
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