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To rephrase, if I run my car's heater (It's a 1991 Geo Metro for reference) will that in turn dissapate any of the heat in either the block or the radiator. This is a purely hypothetical question.

2007-05-13 14:28:56 · 14 answers · asked by collegedebt 3 in Cars & Transportation Maintenance & Repairs

14 answers

Yes and no. Your heater is basically a small radiator inside the passenger compartment - with the one difference that it doesn't have a thermostat in the system. It runs off excess heat that the engine generates. However, if you turn up the heat before the engine has warmed up, it will take longer for the engine to reach operating temperature - since it takes coolant directly from the engine block (usually at the water pump), and not from the radiator. In this case, you're actually cooling the engine almost as fast as you are warming it.

PS: If your car is overheating, you can help it a little by turning the heat up, since this effectively increases the capacity of the radiator.

2007-05-13 14:37:35 · answer #1 · answered by Me 6 · 1 0

yes, by turning on the heat it allows coolant to flow through the heater box wich allows coolant to travel through the radiator at a slower flow wich there for allows the coolant more time to cool down. This method is only used as a temporay fix, most cars mainly new ones are not made to with stand high heat so if you are having a heaing problem get it checked out soon cause you could end up cracking your heads on your motor.

2007-05-13 14:50:16 · answer #2 · answered by mustangghia75 2 · 0 0

No....your heater operates off of a separate core. Normal operating temp. of a car is 180 - 200 degrees. You are not going to dissapate enough heat to make a difference.

2007-05-13 14:32:48 · answer #3 · answered by bobsled 5 · 0 1

yea i know what you mean... i worked at a toyota dealer and when the car is cold the engine runs to heat it up. the engine gets its heat from running so when its cold it stays running so you can get heat. the heater in the car works off the coolant, so if the engine never ran the heat would never blow hot air. with the rigging in a switch i would say no to that because it might confuse the car and it might accualy be using more gas then it is suppost to. if the car is ice cold and the computer thinks the engine is hot the car will run too lean and might cause damage to the engine prematurely good luck

2016-05-17 10:09:13 · answer #4 · answered by jacquelyn 4 · 0 0

The answer is yes. Some owner manuals will tell you that if you car overheats while waiting in traffic to turn the heat on high.

2007-05-13 14:37:04 · answer #5 · answered by Anonymous · 0 0

If the car doesn't have air conditioning it will. Air is taken from the bonnet, fed around the engine (warming it up) and then into the car. The more air past the engine the cooler it gets.

2007-05-13 15:45:42 · answer #6 · answered by Anonymous · 0 0

Yes, the heater is another "radiator" for the car when it's turned on.

2007-05-13 14:38:04 · answer #7 · answered by Neil L 6 · 0 0

The car's thermostat regulates engine temperature. If it is working correctly, then no, there won't be a difference.


If the car is overheating, then turning on the heat may reduce engine temps.

2007-05-13 14:32:55 · answer #8 · answered by Eric P 2 · 0 1

Yup, in fact if you feel that it will overheat pull over and turn the heat on full blast.

2007-05-13 14:32:06 · answer #9 · answered by sapboy2001 2 · 0 0

YES.. TURNING ON YOUR HEATER FULL BLAST WILL REDOUST THE HEAT FROM THE ENGINE..
BUT U MITE WONT TO CHECK ON YOUR THERMOSTAT OUNDER THE HOOD?

2007-05-13 14:42:10 · answer #10 · answered by johnhershey2005 1 · 0 0

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