Cut out while driving?

Tiny
NAVI1985
  • MEMBER
  • 2008 AUDI A6
  • 2.0L
  • 2WD
  • MANUAL
  • 140,000 MILES
2008 Audi A6 2l pd140

Car cut out while driving and isn't pumping diesel from lift pump can be seen running of external fuel pump.

What is the repair for this? Will it be a new fuel pump or something more complicated and expensive?

Thank you
Friday, July 4th, 2025 AT 12:59 PM

2 Replies

Tiny
MECHTRIX
  • MECHANIC
  • 382 POSTS
Yep" sounds like the pump has failed. Good luck
Was this
answer
helpful?
Yes
No
Sunday, July 6th, 2025 AT 1:52 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
That is hard to say, you need to test to see if the fuel pump is getting power when the engine is cranking over, here is a guide to help you and the color wire you need to test to the lift pump.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Wire color - Red/blk

There is also a fuse #1 30 amp in fuse panel C I would check as well. The fuel pump is run by the FPM which is under the right front luggage compartment, I would check that out as well.
Was this
answer
helpful?
Yes
No
Friday, September 5th, 2025 AT 5:29 PM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE