Help please - S3 8V hunting on idle

[Damo S]

Returned to the dealer I got the car from and he claimed it's been taken to 3 garages and none seemed to find a fault.

Sounds like BS to me, and if your issue can clearly be demonstrated that's an unacceptable response. I'd be pushing to take it to a garage of your own choice and get the dealer to foot the bill. This is assuming the car is still under the dealers "warranty".

 

[maday007]

Sounds like BS to me, and if your issue can clearly be demonstrated that's an unacceptable response. I'd be pushing to take it to a garage of your own choice and get the dealer to foot the bill. This is assuming the car is still under the dealers "warranty".

As at when I took the car to the dealer, the car was out of the dealers warranty by about 2 weeks, I'm not sure there's anything they will do now (months later), I'm just trying to eliminate whatever the problem could be on my own

 

[Damo S]

the car was out of the dealers warranty by about 2 weeks

Oh, blooming typical that is Cam magnets and PCV are certainly cheap places to start for rough idle issues. But with the weird knocking noises as well Id be taking it to a garage.

 

[Boydie]

Think I finally have to change the magnets in my 2014 Stage 3 with 77k miles on it

Was over taking a car last night and car just bogged down, EPC light on dash, limp mode activated

Got to my destination, turned car off, back on and no light, boost back, car driving as normal.

Scan on OBD11:

No noticeable hunting on idle, car drove perfectly fine 30+ miles this morning - thoughts? All faults above related to the camshaft?

2 off these?

https://www.autodoc.co.uk/pierburg/13580169

 

[stubbly46]

Interesting video on YouTube about the cam adjusters

 

[Kay_atp7]

Hello guys, sorry to bring this old thread back up but I’ve been having the same problem so I’ve ordered 2 magnet sensors, just wanted to see if you guys know if these issues are due to the camshaft sensors: engine light has come on, cruise control comes on but turns back off then doesn’t come back on again till I turn engine off?
Thanks for the help in advance!

 

[Boydie]

Just change them as they will go eventually - did mine last week

I would recommend disconnecting top pipe of the coolant tank, lifting coolant tank and moving it out of the way for better access

Have some blue roll or towels under the magnets to catch excess oil

The plugs are a tight squeeze so pry them off - the grey tab just needs lifted upwards to release the clip

The rear one is a bit fiddly due to air con pipe but less than a hour should have them in

 

[JohnM100]

Interesting video on YouTube about the cam adjusters

Nice vid - can tell he’s been in the game for a while with his repeated ‘check your oil’ comments.