I am new to the acura scene. I just purchased a 99 gs with only 18,000 miles on the car. I discovered when I start the car when the engine is cold, there is a metallic buzzing noise coming from I think on the right side of the engine. It only last the most about 10-15 secs. and it goes away. At first, I thought it was the heat shield, but the shield was found to be tight. I am at a lost. All functions on the car are normal. Is this normal for an Integra????

 

That's your ABS system pressurizing. It's normal unless it is doing it very often or your brakes aren't working correctly. If that were the case, though, you should have a check light on.

 

i don't know of the ABS system pressurizing for 10-15 seconds. Check the lower header bracket. its black and bolts from a tab on the collector to the block of the motor. mine was broken in half and the two pieces vibrated against each other. just a suggestion.

 

I searched the forum about the possibility of the ABS pressurizing. My problem is that the ABS light doesn't come on and my GS being a 99' does not have a resevior or at least I don't know where it is. The noise lasts about 25 seconds. I guess I will have to get a repair manual to see how the ABS modual is constructed in my 99GS.
I will also take a look at my lower heatshield to see if it is loose. I doubt it because if it is the heat shield, wouldn't the buzzing noise be happening all the time? Thanks for the help

Jeff