I was driving the faithful jeep yesterday when i noticed the check gauges light appear, and the oil pressure dropped to nothing, so scared to death, i parked it. i then changed the oil, the filter and sending unit. then i changed the oil pump and still nothing. last i attached a manuel gauge to the oil tank and started the jeep. it held pressue for about 5 minutes then it slowly started to decrease until it was reading 0 pressure. i am confused i only have 58,000 miles on my jeep so i should not be having trouble like this , or should i? please help me or give me any suggestions as to what you would do besides rebuilding it. i dont understand why i would need to do this at 58k.....please help, anything will be helpful.....thanks in advance
My buddy experienced simular problems with a 97. It turned out that there was a recall on his. The dealer replaced the fuel pump and it seemed it make the problem go away. This doesnt really make sense so i think they must have done something more. I would check with the dealer for recalls.
Usually a complete loss of oil pressure is due to the main bearings or the rod bearings....so the only thing I can think of, after reading all of what you have done so far, is that you spun a bearing somehow..., check with the dealership on recals, or warranty, hopefully, because it is not a quick or easy thing to fix. It is not too expensive to buy new bearings if you do it yourself, but since one may have spun, it may require some machining on the crank, or block, and this can get expensive.
You wiped the cam bearings! Water must have gotten into your crank case and wiped out your bearings. This will definitly ruin your engine. I have seen 7-8 of these in the last year. In every case, water damage. Did you buy your jeep used?