2003 BMW 540i engine noise

2003 BMW 540I
130,000 MILES • V8 • 2WD • AUTOMATIC
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BLBLACK
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  • 1 POST
I am getting a low moaning noise for 20-30 seconds from left side of engine while driving. The noise occurs at different times and days after the engine has warmed up. The noise seems to occurs if the outside temperature is above 55 degrees mostly. No warning lights, codes or other noticeable changes in engine performance.
Feb 11, 2009 at 7:10 AM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
It could be the PCV plate. It is the plate bolted to the back of the intake manifold.
Feb 16, 2009 at 12:56 PM
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