I've been trying to fine a suitable replacement and cannnot. Apparently the 3 wire plug is unique to the 1998 GC 5.9 Limited.
on a 1999 jeep grand cherokee where is the coolant fan relay
Looking for the radiator cooling fan air conditioning wiring diagrams for 2000 cherokee laredo
If you take the grill off of the front of the vehicle you should be able to see the radiator. Look on the passenger side of the radiator, your wing nut type plug should be on the side of the radiator. The Jeep Cherokee radiator drain plug is plastic and very fragile. You should remove the lower radiator hose to drain the cooling system.
Blocked radiator, low on coolant, stuck thermostat, air in cooling system
There are products readily available designed specifically for cleaning cooling systems. I would not recommend using a product like Oxyclean in the radiator.
The relay is under the right front fender, behind the bumper. It's difficult to get to.
Check the fuse. It is located in the under hood fuse panel.
Drain cooling system Remove fan shroud Disconnect transmission lines Disconnect upper and lower hoses Remove bolts at top & side of radiator Lift out of lower supports
You may have to replace the cooling fan relay or the cooling fan itself, I had the same problem and I first replaced the relay and it helped but then the cooling fan went out and I repalced it and now everything is fine.
The cooling system on this vehicle does not use a radiator cap on the radiator but on a remote tank. It may have a different (larger) cap on it than what you are used to seeing on the radiator.
Rust and sediment can accumulate in the cooling system. Flushing the radiator helps keep the cooling system clean.
Either a blown head gasket, or more specifically a cracked head due to overheating. This allows fuel to escape the cylinder into the cooling system.