My 1998 jeep grand cherokee is running hot and leaking water, is the water pump bad?

Yes a bad water pump will definitely cause it to run hot. you'll probably be able to hear it as well as a whinning noise from the front of the engine. Also check for really low or incorrect fluid. jeeps are know for bad water pumps and leaky radiators. the heater pump is a seperate pump from the water pump. Also check for radiator fan opperation while the vehicle is stopped. If the fan is not coming on, it could be a fuse, relay, or intake air temp sensor.

you may need a head gasket. a shop can use an indicator dye to tell if there is a combustion chamber leak that may only be aparrent when the vehicle is hot.

It could be the water pump, the air switches from hot to cold because the heater core is the highest point in the cooling system so as you run low on water you lose heat, if the water pump has siezed you are in danger of losing the serpentine belt, so don't wait to get it fixed.

Sound like a bad water pump.

DIY for around $65.00

Could be several things,

1. thermostat
2. water pump
3. fan motor is bad (is the fan running when at temp?)
4. fan motor relay

Is it running hot all the time or just when setting idle?

You need to get a pressure check on the cooling system. I suspect a bad head gasket. Engine compression leaking into a water passage would force coolant back out of the engine. Hope this helps.

If its leaking coolant, likely it is coming from the water pump above the lower pulley and running down to there. Look carefully and use a light.
If leak is oil, the pulley seal is leaking.

check the coolant temp sensor

i have a 2000 grand laredo jeep cherokee that is leaking fliud bad i think it the water pump how do i fix it ??

the seal on the windsheld has gone bad jeep never could find a good fix this problem