Car Heater Only Works When I Rev the Engine
Introduction
If your car heater only works when you rev the engine, it’s likely that there is a problem with the cooling system. The cooling system is responsible for circulating coolant through the engine and radiator to keep the engine from overheating. When the cooling system is not working properly, the engine can overheat and the heater will not be able to produce heat.
Causes of a Faulty Cooling System
There are several things that can cause a faulty cooling system, including:
- A leak in the cooling system
- A faulty water pump
- A clogged radiator
- A stuck thermostat
Symptoms of a Faulty Cooling System
In addition to the heater only working when you rev the engine, there are several other symptoms of a faulty cooling system, including:
- The engine overheating
- The temperature gauge reading high
- Steam coming from the engine
- Coolant leaking from the engine
Diagnosis and Repair of a Faulty Cooling System
If you suspect that your cooling system is faulty, it’s important to have it diagnosed and repaired by a qualified mechanic. The mechanic will be able to determine the cause of the problem and recommend the best course of action. The repair may involve replacing a leaking hose, repairing a faulty water pump, cleaning a clogged radiator, or replacing a stuck thermostat.
Prevention of Cooling System Problems
There are several things you can do to prevent cooling system problems, including:
- Regularly check the coolant level and add coolant as needed
- Have the cooling system flushed and refilled every 30,000 to 60,000 miles
- Inspect the radiator for leaks and clean it as needed
- Replace the thermostat every 50,000 to 100,000 miles
Conclusion
If your car heater only works when you rev the engine, it’s likely that there is a problem with the cooling system. It’s important to have the cooling system diagnosed and repaired by a qualified mechanic to prevent the engine from overheating and causing further damage.
