I just bought time on a 2000 Jeep Cherokee Sport. The oil pressure gauge has been inconsistently reading high since I got the vehicle. I had some electrical issues and replaced the alternator. Now the electrical problems are fixed the high oil pressure reading is much more consistent and there is a lurching in the vehicle at regular operating speeds. I plan to simply change the oil today and reassess. If anyone has any helpful tips on how to correct the problem I would be much obliged. Thank You.