Well I guess I will have never ending problem with my FD. But that's cool.

Anyways, I've also notice lately that when the car is just being at idle, it will have this weird noise like a ring noise tone in the engine or somewhere around the engine. Like a little insect crying. It will go something like this, "ring, bling, bling, rring.." I dont know, but yeah something like that.
But when rev up passed 1k, the noise dissappear.

Could the air pump be bad? Or could it be something else... Any answer will be helpful...

 

If you think that it might be the air pump un plug its connector. That will make it's electric clutch disengage and it will not turn.

 

wouldn't the air pump belt be attached with the alternator and the p.s pulley.

BTW where is the connector to the air pump. Do i just unplug it while the engine is still running and listen whether the noise died out or not.

 

Maybe an exhaust heat shield vibrating?

 

Are you sure that your belts are all correctly tensioned and in good condition? Especially the alternator/PS belt; as mine became worn, it started to make a small squealing noise at idle, which was temporarily solved by spraying the "belt dressing" sold in auto parts stores. However, whenever it would get wet during rainy days, the squeal would return, so I replaced it.

 

could also be worn belt. Check all your belt throughly and see for any wear or tear.

 

BTW what exactly does the air pump do? Because it isn't in normal piston-engines so it should be something specific with rotary?

 

Pumps air down to the main cat to help it clean your dirty exhaust. Supposedly without it your car will clog over time, but haven't seen any evidence to substantiate this. Just one more thing to toss out when you lose your cats

 

Yeah,
I notice the squealing noise is coming from my HKS intakes...

What could cause this??? There's nothing wrong with the intakes.?? HELP???