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2006 Volkswagen Touareg known good fuel pump capture during starting

Hans Diagnostician Utah Posted   Latest   Edited  
Resource
Driveability
Electrical
2006 Volkswagen Touareg 3.2L (BMX) 6-spd (09D)

There are two pumps used in this chassis and I see a lot of them that run for only 3.5 seconds, then die. This is a known good capture of both fuel pumps during starting. Note, they seemed to change the location of the pumps side to side depending on year and cutting the carpet under the back seat is required to access them.

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Ray Diagnostician
Ontario
Ray Default
   

Thank you for the known good captures. What is the theory with using 2 fuel pumps?

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Hans Diagnostician
Utah
Hans Default
 

The secondary pump is there to help on startup and during acceleration to increase fuel volume.

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