C on

v9sDEF (v9sDEF) 2017-04-02 13:24:48 +0500 #1

Hi,

Today while I was idling my car after a long drive with the A/C on, the A/C started blowing warm air. I managed to look at the thermostat and the needle was slowly creeping up from the middle (B/w Hot and cold - where it usually rests) towards Hot. I quickly turned off the A/C and shut down the car. After starting the car back up, the needle crept down back to the middle and the issue didn't show up again - but to be safe, I didn't keep the A/C on for long on idle.

Anyone able to diagnose the issue? I think it might be the radiator fan, but it seems fine to me. The car recently had its 40,000km service (3 months back) and got the coolant flushed as well.

dayrider (dayrider) 2017-04-03 15:47:08 +0500 #2

where did you find a 40k driven lancer
As for the over heating issue, check if the radiator is clean, if its circulating the coolant properly or not etc.

v9sDEF (v9sDEF) 2017-04-04 20:00:27 +0500 #3

Well we bought it brand new in 2006 when it was launched...it was sparingly used by my dad. Radiator is clean..the radiator fan might've been slightly making a sound when the issue happened, but i've been unable to reproduce it.

So far, i've deduced it to be either:

The radiator fan
the water pump
radiator blockage.

Correct me if i'm on the wrong track.

dayrider (dayrider) 2017-04-06 12:24:21 +0500 #4

If the radiator is clean, check first if its reducing coolant, if not remove the cap of the car while off and cold, start the car and observe the water, turn on the ac, notice the functionality of the fan and the thermostat. If its the water body, it would make a noise or leak coolant.