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Once you set the tempreture it works warms up then blows cold air back to warm and continues until we manually switch off and what would be the problem and what part needed to replace. thanks model
On my car I had to replace the vacuum switch that operates the doors in your heating and cooling system.On my car I had to replace the vacuum switch that operates the doors in your heating and cooling system.
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Your system is either out of sync on the control, or the air temperature control blend door is not moving due a failure of the door or its actuator motor.
U could be run on eco a/c where the engine is using the power until it has extra to spare. Warm at start could be simlarly that there is now cold air yet and has to "make" cold air to distribute when ready. See if u can find a setting for reg use. cheers, ps eco saves dollars/euros.
I have a 2000 pontiac grand prix with a digital climate control system.
The heat quit working, it doesn't blow out any heat. Now that it is warm
outside the air stopped blowing out any air. The digital temperature on
the climate control is not correct. When it states that it is below 30
degrees on the ext and it is warm outside the air wont be cold. Once it
starts going above 30 degrees the air gets colder. Today the blower stop
working all together. Was told it maybe the climate control unit was
bad. You can hear the door opening/shutting when you switch the temp
from cold to hot. But there was no heat blowing out whatsoever in the
winter time. Could you please give me your opinion on whether or not it
is the climate control unit or something else?
There may not be enough coolant in the system. What happends is the heating core is nothing more than a small radiator inside the car. If the fluid is low the heating core is empty. But once you start driving the water pump works harder and fills it up. Another possible cause is a sticking thermostat. If its stuck open the engine cant retain water to heat it up. Thus blowing cold air. Whith the engine cold remove the radiator cap and check your coolant level. If it is full a replacement thermostat may be needed. HTH and dont forget to rate.
It is most probably the problem with blend door or blend door actuator. But just in case I would suggest to follow the entire procedure:
First you have to identify what causes the problem.
To do this you have to: 1)When engine is cold check the level of coolant. If it is low fill it up. 2)Start engine and check if engine reaches regular temperature. If your engine is not heated enough it means your thermostat does not work properly and should be replaced 3)If engine temperature is normal, then check the temperature of pipes that go to/from heater core. These pipes are located up the fire wall (easier access is from the passenger side). If pipe/pipes are cold (even engine is warm) it means you heater core is plugged and should be flushed. Keep in mind, flushing the whole cooling system is different from flushing heater core. 4)If pipe/pipes are hot/warm, turn off the fan, switch controller to the hot position, wait for 3-4 minutes and turn on the fan. Note if the cold air blows first or warm air blows first but it cools down in 5-10 seconds. If the air blows cold than it is most probably the problem with blend door or blend door actuator. 5)If air blows warm first and then cools down, then while running engine and remaining the transmission in PARKING position, press on the gas pedal until your engine reaches 3,000 RPM. Check if your heater blows warm/hot air. If it does, then your water pump does not work properly and should be replaced. If the air still cold, I would suggest flushing the heater core.
On my car I had to replace the vacuum switch that operates the doors in your heating and cooling system.
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