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Unread 06-24-2013, 05:58 PM   #1
trailswamper
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1997 TJ Wrangler 
 
Join Date: Jan 2013
Location: fayetteville, nc
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4.0 engine noise

Recently rebuilt the 4.0 engine of my 97 tj and it makes an annoying noise at around 3000rpm that I cannot pinpoint. Anyone have any idea what this might be or where to start looking? Belt was replaced with engine rebuild...

http://www.youtube.com/watch?v=cB8Ib...ature=youtu.be

Thank you for looking

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Unread 06-24-2013, 06:48 PM   #2
WhiteMtnJeep
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2003 TJ Wrangler 
 
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Check your intake manifold bolts. Watching the video it seems like it makes that noise when the throttle closes. I know an intake leak can make a whistling kind of sound and it's not that uncommon in a Jeep.
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Unread 06-25-2013, 01:00 PM   #3
trailswamper
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1997 TJ Wrangler 
 
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Location: fayetteville, nc
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also around the same time, i started getting the p0441 code (evap emission control system purge flow fault). Anyway these would be connected?
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