What type of system do you have? Heat pump? With or without supplemental electric strip heat? Warm air furnace? Need to know in order to help.
ask your service station to do a compression test. I had the same problem and replaced all sensors and thermostat but after the test it was found out that there was a crack in the housing holding the thermostat
A car running hot after it has been started could be blown head gaskets. The thermostat may also need to be replaced.
Replacing a thermostat on a 1989 Audi 100 should take an estimated 15 minutes. First you will need to disconnect the radiator hose by taking off the two clamps. Then you will remove the two bolts holding the housing in place. After the bolts are removed, the old thermostat can be taken out and replaced with a new one.
Had this happen once. Found out the thermostat was'nt opening. Replaced it and everything worked fine. Watch your heat gauge, if after a few minutes of the engine running and the gauge goes from nothing to hot imediatly instead of gradully, you;ve probably got a bad thermostat.
You may want to consider replacing the thermostat.
It would also depend on how cold is cold, 35 degrees F below freezing or 35 degrees F above freezing.
Yes your thermostat is working if it is drawing coolant after about ten minutes. It depends on the size of your motor to determine how long it should take to hit the right temp for the thermostat to open up so it can send coolant through the system. If it starts within ten minutes your thermostat is working fine
Bad cooling fan or thermal relay. Bad water pump, clogged radiator.
It could be that you are low on coolant, but if that is not the case, your thermostat may be stuck open. After the vehicle has been running for about 15 minutes, put your hand on the top of the radiator. If it is not too hot to touch, your thermostat should probably be replaced.
About 20 minutes
Because of the thermostat. This will turn on the unit when the temperature gets below what ever degree it is set at and then will turn off when the thermostat gets at that temperature.
the heating on 2 and a half bars all day wastes more electricity then the heating on full blast for 15 minutes a day.