Heater doesn't heat well - 2007 Buick Lucerne 3800
#1
Senior Member
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Thread Starter
Heater doesn't heat well - 2007 Buick Lucerne 3800
Hi
Today was cold outside , I turn on the air Conditioning on HOT temperature (31.5C).
the car was in operation temperature and the heater not heat well at all.
driver'* side was a little bit warm air and the passenger side was cold .
what could be the problem ?
I already know there are several options : thermostat , dirty heater core , blend door ..
Today was cold outside , I turn on the air Conditioning on HOT temperature (31.5C).
the car was in operation temperature and the heater not heat well at all.
driver'* side was a little bit warm air and the passenger side was cold .
what could be the problem ?
I already know there are several options : thermostat , dirty heater core , blend door ..
#2
Senior Member
True Car Nut
Make sure the radiator and overflow tank are filled to the proper level. If it hasn't been changed in a while, put in a new thermostat. Those are both inexpensive and easy fixes, and a high probability of fixing your issue.
Does your car have a temperature gage? What does it read?
Does your car have a temperature gage? What does it read?
#3
Senior Member
Posts like a Turbo
Thread Starter
I checked the overflow and it'* OK .
maybe the different between the driver and passenger temperature lead to the solution ?
why one side cold and other warm ? even that the warm side should be warmer ...
maybe the different between the driver and passenger temperature lead to the solution ?
why one side cold and other warm ? even that the warm side should be warmer ...
#5
Senior Member
If you have checked the coolant levels, when the engine is cold(reservoir and radiator),and the levels are ok, then get engine to normal operating temp.....now command full hot.......with a thermometer in the register(check both sides), it should read 145-165F.......
If it doesn't then feel both heater core hoses....if both are hot, temp door problem......if the inlet is much hotter than the outlet(should approx be the same...hot), either air bound, or partially plugged(do a reverse flush)....
Is a code P0128 set?
If it doesn't then feel both heater core hoses....if both are hot, temp door problem......if the inlet is much hotter than the outlet(should approx be the same...hot), either air bound, or partially plugged(do a reverse flush)....
Is a code P0128 set?
#9
Senior Member
Did you check the coolant level in radiator and reservoir on a cold engine?
Did you check the temp from the vents, with the engine fully warmed, and on max heat?
Just feel the heater core hoses....they should BOTH feel as hot as the radiator hoses....if one is much cooler, it is air bound(due to a leak), or a partially plugged heater core....
Did you check the temp from the vents, with the engine fully warmed, and on max heat?
Just feel the heater core hoses....they should BOTH feel as hot as the radiator hoses....if one is much cooler, it is air bound(due to a leak), or a partially plugged heater core....
#10
Senior Member
Posts like a Turbo
Thread Starter
Did you check the coolant level in radiator and reservoir on a cold engine? YES
Did you check the temp from the vents, with the engine fully warmed, and on max heat? YES
Just feel the heater core hoses....they should BOTH feel as hot as the radiator hoses....if one is much cooler, it is air bound(due to a leak), or a partially plugged heater core....
Did you check the temp from the vents, with the engine fully warmed, and on max heat? YES
Just feel the heater core hoses....they should BOTH feel as hot as the radiator hoses....if one is much cooler, it is air bound(due to a leak), or a partially plugged heater core....
why in the passanger side i don't feel any heat ? only from the driver side .
Thanks