Question about 2002 Mitsubishi Lancer
The thermostat controls the coolant temperature range for the engine to run correctly. The coolant temp running to hot or to cold are both bad for gas mileage, emissions and engine life. Does the coolant bubble up in the reservoir after you have driven it? If it does, then the odds are the head gasket has failed. Check the engine oil level on the dipstick to see if the oil looks milky or is over filled. If it is, then it's a head gasket that has failed and will need to be replaced. Depending on the age and mileage, it could just be the thermostat that has either stuck closed(engine coolant runs hotter than normal) or stuck open(engine coolant runs colder than normal). Hopefully it is just a bad thermostat. Good luck!
Posted on Mar 19, 2015
Yes, but it's not recommended. If you have cooling issue, fix the cause, usually a blocked radiator. May be collapsed hose. Colling issues can also come from a blown head gasket.
Posted on Mar 17, 2015
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Posted on Jan 02, 2017
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