00troublemaker

Hello everyone! Im new to this great site of yours. I wish I was here to ask about some crazy new mods, but, I'm not. I have a 2000 Cherokee with 140k. When I bought it 6 months ago, the check engine light was on, the code was reading cylinder #3 misfire. I replaced the plugs, Champion OEMs, and the ignition coil rail. Jeep ran fine up until the other day, except..... during this time, I had another problem, when the jeep was warmed up, the oil pressure would drop and the check gauges light would come on. So, the other day, jeep was warmed up, parked, 20 min later came out, started right up, drove 200ft, check engine light started flashing, check gauges light came on and the temp gauge went off the charts. It was jerking a bit so i just parked it right there. The next day, the CEL was on, solid, and I drove it to AAP, hooked it up, cylinder #3 misfire. But when I started it back up, light was gone(I don't think they reset it, but maybe?)and drove it home. Today, gave it another try, drove about 30 min, came to a stop sign, check gauges came on and the temp gauge shot up again. I was a mile from my destination so I pushed forward. Got there and my overflow was overflowing, looked just like water though, no 50/50. I then remembered that I didn't have heat on the trip...I know that this is a lot but if anyone can help me out, at all, it would be GREATLY appreciated!! Thank you all in advance.
BG

98 JeepJeep

have you checked the belt? you may have a bad water pump.

00troublemaker

No, I haven't done that, how would I know if I have a bad pump/belt?

98 JeepJeep

well the belt may have broke or came off..something is causing you to not have any heat and the coolant to boil.
which both can be caused by NO flow..also you could have a Bad thermostat..(unlikely though) since you have a 00 you have the 0331 Head which is NOTOURIOUS for cracking when overheated....so i will Keep my fingers crossed for you.

00troublemaker

Thank you for your good luck, I'll check the belt first thing in the morning.