Make a donation

Author Topic: Knock sensor  (Read 105 times)

Offline Wills1309

  • Can't Read PM's Yet!
  • *
  • Thank You
  • -Given: 0
  • -Receive: 0
  • Posts: 4
    • Email
Knock sensor
« on: November 18, 2021, 07:32:16 pm »
Hi, I have a 55 plate Gti, my garage says it is down on power.  So it's been in for diagnostics this week.  Fault code relates to "knock sensor" Many other ancillary components ruled out like fuel pump. A split diverter valve was found and replaced but made no difference. Garage says next step would be to access the sensor, however they say it's a days labour to get to it.  Any thoughts from anyone?

NB it's a good garage with a very good rep, Audi specialists

Offline LC5F

  • Won't Shut up.
  • *****
  • Thank You
  • -Given: 15
  • -Receive: 50
  • Posts: 686
Re: Knock sensor
« Reply #1 on: November 18, 2021, 10:15:35 pm »
Pelican parts do a good guide to see what is involved:
https://www.pelicanparts.com/techarticles/Volkswagen_Golf_GTI_Mk_V/48-ENGINE-Knock_Sensors_Replacement/48-ENGINE-Knock_Sensors_Replacement.htm

It appears to be intake manifold and oil cooler off - I would say an entire day doesn't sound right.
But with all those parts off its a good time to replace the thermostat & coolant sensor - that is if they are unknown condition. also intake valves could be de-carboned too.