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Originally Posted by undead  But once i switched on the blower , hot air came which was new for me. The time was 9PM only , so if it was during noon , we can say due to hot sun . |
It happens when revs drop(close to idle) in the verna CRDI too. nothing to worry about. doesnt happen if your AC is on re circulate option.
I think the AC is pulling in air from the engine bay.
also happens when your at 4000rpm and then suddenly lift off the accelerator.
I have a theory, but its only a theory, so gurus dont jump on me.
i think, the engine is sucking in all the air it can get when its at high revs, and when you lift off the throttle, there is a slight build up in pressure in the engine bay, which forces heated air in through the AC vents.
after a few moments(less than 2 secs) of running at a lower rpm it goes away.
initially I thought it was some nice extra feature installed by hyundai to let us have all the engine power when we floor the accelerator, by cutting off the AC.
