did the car run out of gas at some point? or come very close to running out of gas. if so your SEL can come on and throw a code for misfire.
but since you have a whistle sound im not to sure. check your vacuum lines. i dont think you have too many. if you go to realoem.com and search for the vacuum lines you can get an idea of how many you have to check.
when checking them squezze them a little, cause they may look fine but youll find as your squeeze them they have small cracks/holes.
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The aural sensations of 1st gear WOT
**CGM **(Certified Garage Mechanic)