BlackV62K2

When I start my car after it has been parked for awhile, it makes a weird noise. It makes creaking/buzzing sound like something is hitting against something else. It doesn't happen everytime I turn the car on, only when the car has been parked for awhile (8+ hours). The noise only last for 20-30secs and it gradually goes away. Also no CEL and the car drives fine. I narrowed down where the sound is coming from. It's coming from the belt side of the engine bay. Doesn't look like it's the belts though b/c I looked around with a light when it was making that noise and didn't see it hitting anything or walking.

Someone also suggested it was my AC compressor? I don't even remember the last time I turned on my AC (been awhile). I turned on my AC today when I was on the highway but I heard nothing.

Anyone have any idea as to what's causing the problem? My mods are listed below incase it could be one of my mods.

NiteQwill

It's your ABS priming itself. Happens everytime when you start your car, but it is usually louder in cases where you let your car sit.

BlackV62K2

ABS priming itself? So this is normal? I've owned the car for 2.5 years now and have never heard this until recently. I had my SC installed about 3 weeks ago. It was fine driving the first 1.5 weeks after the install and I started hearing it the day after I got it tuned. Doesn't happen often......prolly happened 3-4 times in the last 1.5 weeks.

BlackV62K2

Anyone else know what the problem might be?

03CoupeV6

It is not the ABS system, that's misinformation. The ABS does a self-test each time you start your car, but only as you first start to drive at around ~10mph. If this happens only 20-30 seconds after you start your car (assuming you mean just as it idles), it's something else. I can't be of any help there, but I can tell you that it is not ABS related.

BlackV62K2

Yes, this sound happens during idle when I warm up the car. Hmm, I'm confused as to what it could be. I'm hoping it's nothing serious.

SIRSIG

maybe the fan hitting something or a loose bolt/s on your radiator? happened to me once....

1upacura

Could be a bearing near one of your pullys going bad. check to see if any of your pullys are sitting kind of funny, like offset to the side just a tad. It will be a very small difference in space between, but check it out anyways. If its not that I don't know. Whatever it is get it fixed before it turns into something major.

BlackV62K2

Now it's happening everytime I start the car after it has been sitting for awhile. Again, it goes away after 20-30secs. I don't notice anything weird when I drive and no noise.