Questions and Answers

Jeep Grand Cherokee Getting Too Hot? Q. Hello. I came across your contact info while searching for ways to troubleshoot my 1993 Jeep. My problem is this: My Check Oil Level light has been on constantly now for several weeks. I have completely drained the oil, and changed the oil and filter twice, and the warning light stays on.

I am scared to drive the vehicle because if I go as little as 5 to 6 miles from home, the engine becomes so physically hot that it becomes difficult to even pull the dipstick because the plastic T-handle burns your fingers. Once it is out, the stick itself is extremely hot.

There does not appear to be any water or gas in my oil, and my pressure gauge and water temperature gauge in the jeep reads normal. I have just had my back pressure checked to make sure the catalytic converter was not bad, and it in fact checked okay.

I have 258,000 miles on my motor, and of course fear the worse. I do not believe the thermostat is malfunctioning because the top radiator hose from the block to the radiator is filling with water/coolant, and is hot to the touch. I do not have any leaks/drips coming from the underside of the jeep anywhere. Can you offer any advice????

Thank you,
Robert

A. I had to do a little searching in order to figure out what model Jeep you have. As close as I can figure it is a Grand Cherokee. I hope I'm correct.

Inspect the wiring to the engine starter motor and to the oil level sensor, below the oil filter, for contact with the right upper control arm. I have seen a few of them rub through the insulation there. If it is worn through, repair and reroute the oil level sensor wiring harness.

Then inspect the date code stamped on the hex side of the oil level sensor. If date code is prior to 1392 (139th day of 1992), replace the oil level sensor.

As long as the oil pressure is good and it is not overheating, I don't see a problem with a "hot" engine. You may want to have a mechanic put a mechanical oil pressure gauge on it to be sure your dash gauge is accurate. And you can check the coolant temperature with a thermometer.

With 258,000 miles, maybe a cooling system reverse power flush might not be a bad idea. I would not recommend an engine oil power flush.