Car temperature guage...?

Question:
I have a 1991 Honda civic and when the car is sitting in park the temp guage sits normal, as soon as I start driving the car the temp guage goes right down to cold, which causes the heat to be just warm in the car any suggestions thx....

Answers:

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Thermostat is bad, change it and you will get great heat!

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Have you a new thermostat installed that will fix it

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sounds to me you have an air bubble in your system take it to your local shop and let them bleed the system or maybe its just the system is low on antifreeze

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Thermostat is stuck open.

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Have the coolant level checked, as well as the thermostat in the coolant system. It might not even be there, or is stuck open. You have the signs of an unrestricted, or barely restricted coolant (water) flow, which is warmer weather will be very detrimental to the engine. The thermostat is a disk like device that is usually mounted in the engine block where the hose from the radiator connects to it. It is either missing, stuck open, or the wrong temperature range. Get it fixed. The reason this is detrimental is that the engine is made to operate at a certain temperature. If it doesn't, then there are serious problems that can result from this. The engine could actually over heat because the water passes through the cooling spaces so fast that it doesn't have a chance to absorb any heat, which cools the engine. This can cause the pistons to break, connecting rods to break, cylinder walls to crack, all kinds of nasty stuff can go wrong if the coolant system isn't working as it should.

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Sounds like the thermostat is stuck open. A new one can be purchased for a few dollars. It is located on the top of your motor where the water hose from the radiator is connected.

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Maybe you can find a neighbor or friend to replace it for you. It is a simple job. Just make sure you install a new gasket with it.

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Other than that, take it to a trusted mechanic, or worst, the dealer.

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Sounds like like thermastat stuck in opewn position

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