Ok I'm reposting this as I didn't get not even one responce and I'm hoping someone has had the same issue and can help.... Good morning all. I'm hoping someone with some electrical experience can help. I have a 91 Cherokee Sport. My oil pressure gauge pegged out all the way to the right about 4 days ago and has not moved. Doesn't matter if the jeep is running or not. At first I was thinking sending unit but it has me baffled. As of yet 8 have not replaced the sending unit as I would like to know for sure that's what it needs. I have unplugged the sending unit and the gauge is still pegged to the right. If it was the sending unit, wouldn't unplugging it cause the gauge to move back left? I'm kinda thinking it may be grounded out somehow. Anyone with the same experience? So I don't know if its gauge, sending unit or grounded out. Any help would be greatly appreciated. Thanks