Heater Strange Behaviour
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Joined: Dec 2020
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A180 CDi
Heater Strange Behaviour
Hi,
It is an A 180 CDi, 2011, Auto, Diesel, 100K on clock
Recently I have noticed that when I turn on the heater while engine is still cold, there is a loud noise from engine especially at low speeds or when the car is idle.
The noise almost gone when the engine reaches its normal temp. But when the car idle, turning on the heater causes a small change in the noise and when I turn it off, rmp goes up a little and then comes back below 1000.
Any idea what is wrong with the heater or the engine?
It is an A 180 CDi, 2011, Auto, Diesel, 100K on clock
Recently I have noticed that when I turn on the heater while engine is still cold, there is a loud noise from engine especially at low speeds or when the car is idle.
The noise almost gone when the engine reaches its normal temp. But when the car idle, turning on the heater causes a small change in the noise and when I turn it off, rmp goes up a little and then comes back below 1000.
Any idea what is wrong with the heater or the engine?
