Weird sound at air inlet box
Hello everyone, new to the site. I have several questions for you guys, but I'll start with this one. My car makes a strange "humming sound" which comes from the air inlet box. I know that cause I've opened the box and the sound gets louder, looks like if it were originated at the trottle body/intake area. The sound is not present all the time, it comes and go as I drive the car or at idle. My car is a 92 Grand Marquis LS with the 4.6 lt. engine. Any help in this matter will be greatly appreciated.
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