My explorer makes a loud humming noise that somewhat sounds like a "radiator cap " pressure escaping. It's not a hiss put a hum or roar. It is not metalic. It seems to happen every once in a while or when I am at idle for a while with the A/C running. I have checked all over the engine when this noise is present and can't seem to pin point the location of the noise.
Yesterday while I was walking in a store parking lot, another 1999 or 2000 explorer drove by and was making the same sound. I ask the guy did he have any idea what was making the sound. He had no clue either. He also has had his explorer in the Ford dealer to find the problem. No success with that either. It was driving him nuts too.
Does anyone know where this sound could be coming from and the cause? one more thing. After my explorer sits for 10 min or I drive it on the interstate for about 10-15 min. the sound stops. I know it is heat related but in what ?
Any help would be appreciated.
S. Jackson
Yesterday while I was walking in a store parking lot, another 1999 or 2000 explorer drove by and was making the same sound. I ask the guy did he have any idea what was making the sound. He had no clue either. He also has had his explorer in the Ford dealer to find the problem. No success with that either. It was driving him nuts too.
Does anyone know where this sound could be coming from and the cause? one more thing. After my explorer sits for 10 min or I drive it on the interstate for about 10-15 min. the sound stops. I know it is heat related but in what ?
Any help would be appreciated.
S. Jackson