Coolant and overheating

5

Asked by skidmarkS Mar 19, 2023 at 11:30 PM about the 2001 Jeep Cherokee Sport 4-Door RWD

Question type: Maintenance & Repair

I have a 2001 Jeep Cherokee Sport 4.0l straight 6. Started
overheating.I didn't find any external leaks.Oil stick was fine
just a little low on oil. I pulled the thermostat, replaced it
with a new one. Started refilling coolant in radiator but it
kept taking water but wouldn't fill. I didn't see any external
leaks. I pulled my oil stick and it was completely full of
water and oil. Milky. I never started the engine after pulling
the thermostat and oil was fine before refilling the radiator. .
I pulled oil plug and about a gallon of water came out
followed by sludge. I left the plug off and started adding
water to the radiator and it goes directly out the oil plug.
Any thoughts as to how this could be happening?

3 Answers
39,035

beatupchevy answered about a year ago

Did you have water in the system and the temps. went below freezing ? Did you add coolant when it was hot ? Sounds like a cracked block

Mark helpful
5

skidmarkS answered about a year ago

I added water to the reservoir while it was hot but I didn't add any directly to the radiator and it kid dropped to about 20°f a few weeks before but it had antifreeze in it so it shouldn't have Frozen. I also prayed the engine block was degreaser and I didn't see any cracks externally but that doesn't necessarily mean that it's not cracked. I was going to change the water pump and if that doesn't fix it then I will change the head gasket and have the head checked but I would hate to all that work and then the block be cracked

Mark helpful
39,035

beatupchevy answered about a year ago

If the water and oil have mixed that badly then a complete over haul would be in order , I think , If you really like the vehicle get a crate motor , I don't think it's worth it though

Mark helpful

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