could be head gasket problem. does your heater work? might need heater core , clogged up. do compression test. or bypass heater core and see if that works.
To change the heater control valve on a 2002 Ford Explorer, first, ensure the engine is cool and disconnect the negative battery terminal. Locate the heater control valve, typically found near the firewall on the passenger side, and remove the hoses connected to it using a hose clamp tool. Unbolt the old valve, install the new valve in its place, and reattach the hoses securely. Finally, reconnect the battery and check for leaks before starting the engine.
To replace the rear heater hoses on a 2002 Mazda MPV, first, ensure the engine is cool and disconnect the negative battery cable. Locate the rear heater hoses, which run from the engine to the rear heater core, and remove any clamps securing them. Cut the old hoses off and install the new hoses, making sure to secure them with clamps. Finally, refill the coolant, check for leaks, and reconnect the battery.
this is not an answer just an update. coolant is filled
Remove the water supply hoses from your 2002 Dodge Ram 1500 heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
The easiest way to check is to feel the heater hoses going into the firewall. Check the hoses from a cold start and check that both hoses get uncomfortably hot at about the same rate. This is a good indication that coolant is flowing.
Remove the water from your 2002 Chevrolet Camaro cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Purg The Air Out of the Cooling system
possibly clogged heater core, remove heater core hoses and flush with a hose until clean. reinstall hoses fill with coolant and let it run. if heater core is too plugged up you will have to replace it.
At the back of the engine on the coolant outlet that goes to the heater hoses on the firewall.
the inlet heater hose that connects to the top of the water pump connects to which outlet on the heater core? the far outboard or the inside? this is in a 2002 ford f250, 7.3.
To change the heater core in a 2002 Mitsubishi Montero, first, disconnect the battery and drain the coolant. Remove the dashboard and related components to access the heater core housing, then disconnect the heater core hoses and remove the old unit. Install the new heater core, reattach the hoses, and reassemble the dashboard before refilling the coolant and reconnecting the battery. Always refer to a repair manual for specific instructions and safety precautions.
To replace the heater coil on a 2002 Dodge Ram 1500, first disconnect the battery and drain the coolant. Remove the dashboard and the HVAC unit to access the heater core, which is typically located behind the glove compartment. Disconnect the hoses and any electrical connections, then unbolt the heater core from its housing. Install the new heater core, reassemble the HVAC unit, reconnect the hoses, refill the coolant, and finally, reattach the dashboard.