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A bad thermostat can cause a decrease in gas mileage. If the thermostat is stuck open, the engine will tend to run cold. Not only will this result in a perpetually low temperature gauge reading and poorly performing heater. It will also cause the ECU to richen the mixture, since the engine will appear to be warming up to the ECU. This will result in poor gas mileage. Replacing the thermostat will allow the engine to fully warm up, which will restore gas mileage as well as heater performance.
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∙ 12y ago
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What can cause a thermostat malfunction?
The primary cause of a thermostat malfunction is corrosion. It prevents the thermostat from opening and closing as it normally would.
Would a bad thermostat cause overheating in 1997 ford probe?
Yes a bad thermostat would cause overheating in any car. A thermostat regulates the temperature.
If a thermostat remains open will this cause your car to overheat?
A stuck open thermostat will cause a car to run cooler than needed. It will cause oil to sludge, a loss of gas mileage due to running rich and numerous other problems.
Would a fauly thermostat cause coolant loss?
Yes it can. A faulty thermostat can cause overheating which will cause coolant to be pushed out of the system.
Would the thermostat cause the car not to start in a 2001 Monte Carlo?
no, the thermostat would have nothing to do with the car not starting.
What could cause a sudden drop in gas mileage?
If you mileage has dropped dramaticly in a short span of time there is one very probable answer. The thermostat to you engines cooling system may have puller through into the engine itself, or simply be in need of a replacement. With no thermostat the coolant is constantly circulating the engine. It is supposed to only do this at a higher temperature but if the engine is constantly cold it will be running a rich mixture of fuel, causeing the mileage to be extremley poor. This thermostat should not be an expensive fix and i would suggest looking into the situation as I have seen it before.
What would cause a decrease in gas pressure in a closed container?
Lowering the temperature will cause a decrease in gas pressure in a closed container.
What would cause breathing to decrease?
smoking can cause lots of trouble.
How would a decrease in natality change the population?
A decrease in the birth rate will cause a decrease in population over time.
What decrease would likely cause the selling price of houses to decrease?
Decreased mortgage interest rates and a decrease in construction workers' wages would both be likely to cause the selling price of a house to decrease.
Would a thermostat cause an o2 sensor to fail?
Not directly.
Which answer would cause a ''decrease in quantity supply'' for Fuzzy Wuzzies?
Decrease in the price of Fuzzy Wuzzy.
