I recently bought my son his first car, a 1998 Pontiac Grand Am - got it from a small car lot and thought it would be a good “beater with a heater” for his first go around.
We recently pulled the car inside our garage since the temps dropped (about 2 weeks ago) and ever since then, I had been hearing a fan-like noise coming from the garage area, about every 30 minutes.
I went out there today and stood until I heard the noise again and sure enough, 30 minutes after hearing it earlier, it happened again and it WAS coming from his car, under the hood. It almost sounds like someone turning on a leaf blower for about 5 seconds and shutting it back off. Mind you, this car has only been driven twice since we bought it in September; on the way home and once around the block because he’s not able to drive yet. He does go out and starts it once a week, but it has not moved since being brought home.
Why on earth would this car, which does not move and only is started once a week, be making this noise? I can only guess it’s the engine fan popping on, but why? It’s not turned on, the ignition is off, the AC/heat dials are all set to “off” but like clockwork, every 30 minutes this fan comes on.
I am not making extensive repairs to this vehicle, but I also don’t want it burning down my garage if it has a short!!
Any help you can provide, is most appreciated.