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Loud hooting, screaming noise all the time, idle or fast
2005 FORD EXPEDITION
This noise is all the time loud and has a wierd smell
have the same problem?
Monday, March 30th, 2015 AT 7:43 AM
Check the accessory belt under the hood. It sounds loose. Chances are the tensioner is bad.
Monday, March 30th, 2015 AT 9:03 AM
Changed belt that made no difference. Sounds like it is coming from the back of the engine. I was told by a diesel mechanic that it was the hooter valve. What is that?
Monday, March 30th, 2015 AT 9:47 AM
I hate to say it, but yes, it is an actual part. It is the crankcase vent valve. See the pic attached.
Image (Click to enlarge)
Monday, March 30th, 2015 AT 7:36 PM
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