BWD/NIEHOFF
More Information for BWD/NIEHOFF 27853
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BWD/NIEHOFF 27853  
$23.79
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$23.79
Total
[Wholesaler Closeout -- 30 Day Warranty]
BWD/NIEHOFF 27853close
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Check for Vacuum Leaks First!

Vacuum leaks present symptoms similar to a faulty MAF Sensor. When replacing the MAF, always check for vacuum leaks, too. Common sources include:

  • Cracked or loose Vacuum Hoses / Connectors - an audio Stethoscope can help detect air induced sounds from vacuum leaks.
  • Leaking Intake Manifold Gasket (found in the "Engine" category) - Vacuum Gauge readings below 17-22 in-Hg (normal manifold vacuum at sea level) at idle may indicate an intake manifold gasket leak.
    • Note: As elevation increases, readings decrease. Subtract 1 in-Hg from normal manifold vacuum reference for every 1,000 feet increase in elevation above 2,000 feet.
  • Stuck open PCV Valve - remove the PCV Valve and gently shake it; if it does not rattle, the valve is clogged or dirty and should be replaced.
  • Cracked Intake Boot (found in the "Engine" category)
Videos

Cleaning Your MAF Sensor

Additional Resources

RockAuto Newsletter: Maintaining the Optimal Air/Fuel Mixture

Closeout Inventory Warranty Information:
Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).

Regular Inventory Warranty Information: