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Old Nov 9, 2003 | 11:27 PM
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billybob450
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From: bakersfield usa
Question 5.4 strange noise...........

I own a 2000 F-150 with a 5.4l. When I go to accelerate there is a strange noise, like a whistling noise I was wondering if any of you have a problem like that. The truck only has 48k miles on it so I hope it’s not to serious .
 
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Old Nov 13, 2003 | 10:56 AM
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Mine does the exact same thing (2000 F150 4x4 5.4 ext.cab)...I don't think it's RPM related though. When I let off the gas I can still hear it. It kind of sounds like a deer whistle and I can only hear it at 20 to 35 mph. I was thinking it might be the bug shield making the noise.

Anyone else???
 
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Old Nov 13, 2003 | 07:08 PM
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Well don't think mine is a bug shield because I don't have one on my truck. I only seem to hear it when I accelerate wether I am in gear or not but it does only do it when the truck has been running for a little bit after it has had a chance to warm up. I hope it's just as vacuum line or something simple I hate taking it anywhere to have them look at it
 
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Old Nov 13, 2003 | 07:39 PM
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From: Louisville,Ky.
Check the PCV hose near the throttlebody. Mine was cracked there at only 33,000 miles.
Jimmy
 
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