the temp is all good not using coolant if it needed a oil pump would the temp go up give me a percentage that it is the bearings for a jeeep that i has 120000 miles on it the bearing should no way be out of it them 4.0s are some stong ass motors i dont know i just hope it is not the the damn...
i did use napa oil pressure sending to replace it or are they junk or should i go get an oem replacement and were would you be able to rent a mechanical oil pressure guage
ok at cold start at idle it is at 40 psi as you run it for like 8 mins the oil pressure goes downvery slowly not fast very gradually it happens when it warms up.. it goes the whole way to zero and the check gauge light come on. when you press the gas the gauge goes up alittle. there is a light i...