not blowing hot enough air

[lansdowne]

Hello: 2002 Saturn doesn't seem to be blowing very hot air...could that be a thermostat problem or what else might possibly be the problem??
many thanks, lanssdowne

[pontiacman428]

Originally Posted by lansdowne

Hello: 2002 Saturn doesn't seem to be blowing very hot air...could that be a thermostat problem or what else might possibly be the problem??
many thanks, lanssdowne

It could be an air pocket keeping the coolant from the heater core.
I would make sure it's full run it with the coolant cap off for maybe 20min. but keep an eye on it so if it starts to cough the coolant out you can keep it in check.

If it's a thermostat not opening enough, then it would probably run a little on the hot side or it could be a weak water pump.

[boarder_punk]

The heater core could also have internal corrosion preventing sufficient coolant flow.