flapping by upper driver side in the engine bay

[dffusion20]

I thought it might have been compressor surge at first, but whenever I accelerate, I get flapping. I was able to locate where the sound is coming from though. It sounds like a compressed air tank is charging up underneith the hood near the driver side, top corner. I am pretty sure that is the area making the sound. Thanks for the help.
PS: Sometimes on a random, it will not flap like that.

 

[kre8ive_kustomz]

Is it a flapping or a knocking?

 

[dffusion20]

I def. think it is a flapping. I think it would be almost to light in sound and deepness for it to be a knock. If that makes any sense. It sounds like it is coming right around the alternator and power steering pump. Could it possibly be an exhaust leak on the o2 housing?

 

[talon4lifetsi]

Does it effect the performance of the car???? Maybe its something touching the radiator fan when it turns on!!!!

 

[dffusion20]

to tell you the truth, i dont really know. I havent really pushed it, my mechanic is tearing my car down again b/c I believe my balance shaft is off. I get a big vibration at 3k so I dont really take it past that for now. I just know this flapping is ridiculous. I am really thinking maybe it is an exhaust leak. UGHH

 

[No_Skillz]

Does rate of flapping match your RPM, your speed, or stay consistent?

If it's RPM, check your belts, pullies, power steering, alternator, water pump.

If it's speed, check suspension, wheels, and powertrain components post transmission.

If it's consistent, check for stuff like your fans and er...I'll have to think to come up with more. It's early.

 

[dffusion20]

ok awsome, I will do that tonight, I am at school now so I will let everyone know later tonight. Thanks too!!!

 

[brassc2007]

Open the hood and push the throttle from under the hood. Will let you closer to the sound then sitting in the car and trying to find it.