Loud sucking/ hissing noise coming from engine bay?
625

Asked by Thorin Jan 20, 2018 at 12:27 AM about the 2003 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

Since winter started, I notice a loud sucking/ hissing
sound coming from my engine bay, the colder it
gets, the louder it gets. The noise sounds likes it is
coming from the area in between the radiator and
the front of the engine. I looked at all the pulleys
and they all looked fine. The noise doesn’t start till
I’m come stop for a second. The only thing I can
think of is the clutch for the fan because I know it
doesn’t work anymore. Could that be what it is? 4.0
engine.

3 Answers

F_O_R answered 6 years ago

Perhaps a major vacuum leak. Look for loose hoses under the hood.

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625

Thorin answered 6 years ago

All the vacuum line seem good. I was able to narrow the noise down to the front of the engine. Could it be a pulley going bad

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Mark helpful
625

Thorin answered 6 years ago

Took the belt off and ran it and the noise went away. My friend who is. Mechanic narrowed it down the water pump area

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Your Answer:

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