All Things Mk5 > How to Guides / Troubleshooting

Idle rev

(1/2) > >>

Tal001:
Hi all

I have an issue where when the car is idle the revs go from 800 up to 2k. Today a engine light came on and a scan has shown P0171. This shows too much oxygen in the exhaust.

Any ideas?

I read it could be the DV or PCV?

Thank

lukemk5gti:
Not the dv. A split would only cause loss of boost with throttle down.

Could quite possibly be your PCV. Rougly €100 to fix

GrayMK5GTI:
PCV is a lot less than €100.

You can buy one for 40 British  pounds and even a child could fit one  :signLOL:

Tal001:
Hi thanks for your replies

I tested the pcv by starting the car up and placing paper over the oil cap, the engine was sucking the paper in.  I Think the pcv is fine.

 Any ideas on what else it could be?

Saintsteve:
Change the PCV.

£38 from a VW dealer.. That will be the problem.

Navigation

[0] Message Index

[#] Next page