Whistling Noise on 96' Infiniti I30.

[Ryan Heo]

Hi, I have 1996 Infiniti I30 which has 124,000 miles.The car make whistle noise in the engine room.I have been the repair shops near my home. They told me it may be come from idler pulley or A/D or engine gasket.So I replaced idler pulley wiht drive belt, but there is still noise.Also I think A/C is not problem because the noise is started since the engine temporature is on the normal. I mean when the car was started in the mornig, no noise is there. After I drove about 5~10 min later, it came from. When outside weather is hot, it comes from early less than 5 min since the engine was started. The bottom line is that the noise is related to the engine temporature (what I'm thinking).I have to tell one more symtptom. When I push the accelration to go, it is gone. For example, when I was waiting the red light on the traffic signal, it made noise after then I push the accelratin to go, it is gone.Whenever I push the accelation, the noise is gone.That's all what I know until now. I don't where it comes from. I tried to find several times, but I couln't.Thanks.

[audtatious]

When was the last time you replaced the belts themselves? You can also try grabbing some belt dressing to quiet it down if the belts are in good condition.

[Ryan Heo]

I replaced the longer one on last friday.The other one (short one) is also looked like new one.What is the dressing?Could you tell more exactly?

[audtatious]

Belt dressing is a spray you put on the belts to give them longer life and to cut down noise. You should be able to get it at your local auto store.

[Ryan Heo]

I will try but I think it is related to the engine heat.(I'm not sure)Thanks.

[Ryan Heo]

I sprayed the dress but it doesn't work.Thanks.

[audtatious]

Try to narrow down the area the sound comes from. If you replaced the idler pully then that bearing should be good (are you sure it is tight enough?). AC bearing would be the next to check out. Get the car warm and track it down.