Engine running too hot or too cold? A faulty thermostat is often the cause. Quick, affordable replacement on all makes and models.
Call (818) 500-1939The thermostat is a small valve that controls the flow of coolant between your engine and radiator. When it works properly, it keeps your engine at the optimal operating temperature. When it fails, it can stick open (causing the engine to run cold, poor fuel economy, and weak heater output) or stick closed (causing rapid overheating and potential engine damage).
Thermostat replacement is one of the more straightforward cooling system repairs, but it's an important one. At A Plus Auto Shop, we replace the thermostat, gasket, and coolant, and verify proper operation before returning your vehicle. If the thermostat failure caused overheating, we also inspect for any heat-related damage.
Comprehensive thermostat replacement services for all makes and models at A Plus Auto Shop.
We remove the old thermostat, clean the housing, install a new OEM-grade thermostat with a fresh gasket, and refill with the correct coolant. We verify the new thermostat opens at the proper temperature before completing the service.
A stuck-closed thermostat is one of the most common causes of overheating, but it's not the only one. We diagnose overheating systematically — checking the thermostat, water pump, radiator, fans, and head gasket — to make sure we fix the actual problem.
When replacing a thermostat, we inspect the entire cooling system including hoses, the radiator cap, coolant condition, and water pump. This ensures there are no other issues that could cause problems down the road.
We flush the old coolant during thermostat replacement and refill with fresh coolant that meets your vehicle's specifications. Proper coolant protects against corrosion, freezing, and overheating.
If your temperature gauge reads high, low, or fluctuates erratically, the thermostat is a likely suspect. We also check the coolant temperature sensor and gauge itself to ensure accurate readings after the repair.
An engine that never reaches operating temperature wastes fuel, produces more emissions, and provides weak heat. A stuck-open thermostat is the most common cause. We diagnose and replace it to restore proper engine temperature.
Answers to common questions about thermostat replacement at A Plus Auto Shop.
Signs include the engine overheating, the temperature gauge reading higher or lower than normal, fluctuating temperature readings, weak heater output, or the engine taking a very long time to warm up. A check engine light with a coolant temperature code can also indicate a thermostat issue.
Thermostat replacement is one of the more affordable cooling system repairs. The part is inexpensive, and labor is usually straightforward. Cost varies slightly by vehicle. Call (818) 500-1939 for a quick quote.
Yes. A thermostat that's stuck closed prevents coolant from flowing to the radiator, causing the engine to overheat quickly. This is a serious condition that should be addressed immediately to prevent engine damage.
Thermostats don't have a set replacement interval — they last until they fail. However, we recommend replacing the thermostat during major cooling system repairs (like water pump or timing belt service) as a preventive measure, since it's accessible and inexpensive.
A Plus Auto Shop is your full-service auto repair destination in Sun Valley, CA.
Walk-ins are always welcome at A Plus Auto Shop. No appointment needed — just stop by or give us a call.