1993 Wrangler new water pump new heater coil new radiator getting poor heat from heater?
Your heater core is plugged and you need a thermostat.
one large hose from bottom of radiator to side of water pump. other large hose from thermostat housing to top of radiator. one heater hose from water pump to heater core, I think this one has a Y in it if there is a rear heater other heater hose from heater core to somewhere on top the engine. If there is a rear heater, its return hose goes to a fitting on the radiator.
Is the thermostat the problem when my 1998 Pontiac transport overheats and the top radiator hose isn''t getting hot and the heater blows cold air?
The port on top of the water pump (or on the side in some applications) is the coolant intake for the pump which coincides with the lower radiator hose. some people hook a heater hose to the intake and to the pump but doing this you are recirculating hot water from the heater core back into the engine as the water pump pushes water from front to back coming through the intake and out the…
You heater works from water flowing from your radiator to the heater core, you may have a leak in your heater core. You most likely also smell antifreeze inside the vehicle. It is most likely casued by a leaky heater core. Unfortunatly depending upon the make/model/year of your vehicle a heater core can be difficult and/or expensive to replace.
The heat for the interior of your car comes from the heated radiator coolant. When you are driving down the road the water pump circulates the heated engine coolant. If the engine slows and the water pump isn't real efficient you might get cooling in the heater. When you turn off the engine you aren't getting warm water pumped into the heater.
If you have replaced the water pump thermostat and heater core and ran water through the radiator but it is still overheating Should you have the radiator pressure tested?
Coolant flows into the water pump thru the bottom radiator hose, into the block from the water pump, up into the heads, and then to the intake crossover (or heater core from the back pass side head), then back to the radiator via the top hose. Coolant from the heater core is returned to the water pump not to the radiator.
1. If it loses coolant there is a pressure leak. The leak may be internal. 2. The radiator fan may not be coming on when it should. 3. The thermostat is stuck open or closed or has been removed. 4. Loose or broken fan belt. 5. The water pump doesn't work right. 6. The radiator or other parts of the cooling system (including heater radiator) are clogged
I recently bought a 1992 Grand Prix and the heater died but the rear defrost still works Any suggestions?
The rear defrost is electric. The heater works off the hot water in your radiator running thru it and a fan blowing the heat into your compartment.. check your thermostat, it could be that your heater core isn't getting and water to it, that is were your car get's it't heat from, if not that it could be lack of water