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hissing buzz sound engine?

1K views 6 replies 5 participants last post by  ae86pwr 
#1 ·
Here's my situation. guys when i start my ML 99 every morning ihear a hissing buzz sound in the front. you could hear it from the inside (if the radio is off) is it showing signs of age? or this might be a problem again?? i always put premium gas, my ml is around 70000km and almost 5 years old.
 
#2 ·
BOY-6 - 2/14/2004 6:02 PM

Here's my situation. guys when i start my ML 99 every morning ihear a hissing buzz sound in the front. you could hear it from the inside (if the radio is off) is it showing signs of age? or this might be a problem again?? i always put premium gas, my ml is around 70000km and almost 5 years old.
Carlos,

Does the sound change pitch as you raise or lower the RPMs?
 
#6 ·
BOY-6 - 2/15/2004 3:30 PM

my uncle told me it might be the fan belt? i always try to warm up my car.
Depending on the sound, it could be a belt tensioner.
 
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