ClubWRX Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
22 Posts
Discussion Starter #1
I was at a stop light yesterday with my radio turned down and I noticed that the car would idle around 1000 and then drop to 500 after a minute or two. I noticed the sound of the engine first, it was loud then soft.

I have never noticed my car doing this before. Anyone have ideas or suggestions?
 

·
Registered
Joined
·
16,991 Posts
I'm sure you're misreading the tachometer. Some fluctuation of idle speed is normal due to changing electrical demands/alternator speed/AC/fans, etc. Most cars that I've driven have done this and I'm pretty sure it's normal. As far as the noise goes, you may have been hearing the aux. fan kick on and off.
 
1 - 3 of 3 Posts
Top