2001 grand prix gt heater problem
oslin611
01-13-2006, 09:21 AM
ok so my heater wasnt blowing warm air so i flushed the heater core..this made the heater blow pretty hot for about a week then it went back to blowing cold..after that i decided to change all my coolant..the heater blew even hotter than before again for only about a week though..now it is back to blowing only cool air..could it be the thermostat..this is a very annoying problem and any suggestions would be appreciated..
BNaylor
01-13-2006, 10:57 AM
It's possible. How is the temperature gauge reading and how long does it take the engine to warm up? The thermostat could be stuck in either partial or full open position. For the winter it is best to use the 195 degree TS if you decide to replace it.
oslin611
01-13-2006, 11:22 AM
It's possible. How is the temperature gauge reading and how long does it take the engine to warm up? The thermostat could be stuck in either partial or full open position. For the winter it is best to use the 195 degree TS if you decide to replace it.
it actually stays around 180 so the more i think about it im leaning towards the heater control valve..ill replace the the tstat anyways but is it difficult/expensive to replaec the heater control valve?
it actually stays around 180 so the more i think about it im leaning towards the heater control valve..ill replace the the tstat anyways but is it difficult/expensive to replaec the heater control valve?
BNaylor
01-13-2006, 11:27 AM
it actually stays around 180 so the more i think about it im leaning towards the heater control valve..ill replace the the tstat anyways but is it difficult/expensive to replaec the heater control valve?
I am not sure of the cost of the control valve but changing it out is a PITA. The complete lower part of the heater/evaporator assembly must be removed for access to the heater core, valve and temperature actuators. Do you have a manual HVAC, dual, or auto climate control?
I am not sure of the cost of the control valve but changing it out is a PITA. The complete lower part of the heater/evaporator assembly must be removed for access to the heater core, valve and temperature actuators. Do you have a manual HVAC, dual, or auto climate control?
oslin611
01-13-2006, 11:30 AM
I am not sure of the cost of the control valve but changing it out is a PITA. The complete lower part of the heater/evaporator assembly must be removed for access to the heater core, valve and temperature actuators. Do you have a manual HVAC, dual, or auto climate control?
hmm..sorry but can u explain the difference between the three, im not quite sure?
hmm..sorry but can u explain the difference between the three, im not quite sure?
BNaylor
01-13-2006, 12:14 PM
hmm..sorry but can u explain the difference between the three, im not quite sure?
Depending on options or configuration of your GP. There is a single control manual where it just has one temperature control knob. Then there is a manual with driver and passenger side temperature controls independent of each other. Then there is the automatic dual digital climate control which has a digital readout and a processor controls the temperature actuators. Heat is brought in from the heater core by channels and doors open or close based on the temperature setting. The actual temperature actuator is an electrical motor that moves when you adjust temperature.
Depending on options or configuration of your GP. There is a single control manual where it just has one temperature control knob. Then there is a manual with driver and passenger side temperature controls independent of each other. Then there is the automatic dual digital climate control which has a digital readout and a processor controls the temperature actuators. Heat is brought in from the heater core by channels and doors open or close based on the temperature setting. The actual temperature actuator is an electrical motor that moves when you adjust temperature.
oslin611
01-13-2006, 12:19 PM
Depending on options or configuration of your GP. There is a single control manual where it just has one temperature control knob. Then there is a manual with driver and passenger side temperature controls independent of each other. Then there is the automatic dual digital climate control which has a digital readout and a processor controls the temperature actuators. Heat is brought in from the heater core by channels and doors open or close based on the temperature setting. The actual temperature actuator is an electrical motor that moves when you adjust temperature.
ok gotcha..thought it was someting along those lines..i have the one with passenger and driver independent of eachother..
ok gotcha..thought it was someting along those lines..i have the one with passenger and driver independent of eachother..
BNaylor
01-13-2006, 12:31 PM
ok gotcha..thought it was someting along those lines..i have the one with passenger and driver independent of eachother..
That means you have two separate temperature control actuators that funnel heat in from the heater core. Driver's side and passenger side. Driver's side is located left of the area of the HVAC control and passenger is located on the right hand side. You may be able to perform a quick visual inspection of the one on the passenger side. Drop the glovebox and to the upper left you should be able to see the passenger side actuator. Adjust passenger side temperature and you will see the actutator move which is controlling a door allowing heat in. This will let you know if it is working electrically. I am assuming you do not have heat on either the passenger or driver side. If actuators are working then the problem is probably further up the line related to the heater core or engine/coolant temperature.
That means you have two separate temperature control actuators that funnel heat in from the heater core. Driver's side and passenger side. Driver's side is located left of the area of the HVAC control and passenger is located on the right hand side. You may be able to perform a quick visual inspection of the one on the passenger side. Drop the glovebox and to the upper left you should be able to see the passenger side actuator. Adjust passenger side temperature and you will see the actutator move which is controlling a door allowing heat in. This will let you know if it is working electrically. I am assuming you do not have heat on either the passenger or driver side. If actuators are working then the problem is probably further up the line related to the heater core or engine/coolant temperature.
oslin611
01-13-2006, 12:39 PM
That means you have two separate temperature control actuators that funnel heat in from the heater core. Driver's side and passenger side. Driver's side is located left of the area of the HVAC control and passenger is located on the right hand side. You may be able to perform a quick visual inspection of the one on the passenger side. Drop the glovebox and to the upper left you should be able to see the passenger side actuator. Adjust passenger side temperature and you will see the actutator move which is controlling a door allowing heat in. This will let you know if it is working electrically. I am assuming you do not have heat on either the passenger or driver side. If actuators are working then the problem is probably further up the line related to the heater core or engine/coolant temperature.
ok ill do that thanks a lot
ok ill do that thanks a lot
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