: noise coming from under hood?

01-10-07, 08:06 PM
i noticed when i start the truck and it is idleing it will make a weird noise like popcorn popping something along those lines, i read about a bulletin or something for it i ahve an 04 escalade does anyone have any idea what it can be? anyone had this problem before? i dont have supersonic hearing it sounds like its coming from under the dash/hood but u hear it the most on the drivers side. let me know guys thanks

01-11-07, 02:39 PM
The air suspension adjusting/pumping? I hear it too but it comes from the rear.


01-27-07, 09:09 PM
no its not the air shocks i know that noise, this is coming from under the hood it sounds like.

01-28-07, 05:36 PM
I have the same popping sound. It happens at idle about every 20-30 seconds. I have a 2006 EXT. I have installed headers and dual exhaust so I thought it had something with the vehicle running too rich or something? I took it into the dealer last week and they said that the sound was in the "normal" range. I don't know what that means?

01-29-07, 12:41 PM
If I could put in my two cent I will. It could be your wires that are shorting out on one of your cylinders, thus the gaps between your popping noises. or If you are puting regular unleaded fuel you might be getting pre detination.
Just something to spark ideas in the forum..

01-29-07, 02:04 PM
Piston Slap? Maybe?

02-08-07, 08:54 AM
im using 93 octane fuel. the sound is ridiculously annoying.