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Model specific boards => Golf mk4 => Topic started by: reedy20vturbo on 11 August 2014, 22:00

Title: Aum annoying problem
Post by: reedy20vturbo on 11 August 2014, 22:00

Has anyone got the problem at low revs you get a surge and a flat spot and a loud dv sound? Randomly? Ive got it and when I disconnect my maf it stops, I've replaced maf with genuine ones twice now and it still carrys on with maf connected But with it disconnected it feels like a different car? Any ideas? Cheers

Title: Re: Aum annoying problem
Post by: Bellend on 11 August 2014, 22:43

Disconnecting the MAF will probably put it in a default map mode so you could have another condition sensing engine sensor gone i.e lambda etc.

Title: Re: Aum annoying problem
Post by: reedy20vturbo on 11 August 2014, 22:48

It's very annoying,  I have a decat and I'm only using the first sensor the last one is disconnected, but it was doing it before I did this. Could it be my turbo actuator? As my car has a ko3 turbo with a ko3s intake pipe and actuator

Title: Re: Aum annoying problem
Post by: Wazzzer on 12 August 2014, 09:12

If you're getting a surge then the DV is kicking in it sounds like over boost protection to me. The N249 will open the DV to protect your engine. You may want to look at your N75 valve as your other post suggests.

Why do you have a K03 on an AUM?

Title: Re: Aum annoying problem
Post by: reedy20vturbo on 12 August 2014, 20:59

I've bypassed my n249 and it still does it, I have replaced n75 too, ice searched for leaks too

Title: Re: Aum annoying problem
Post by: sureshot1.8T on 13 August 2014, 15:13

Hi mate,
Just a tip from my experience with this problem :-)
How thoroughly did you check ur hoses n such...I had same symptoms did all you have no splits on actual hose but every connection point had thin slits widthways along/under the clips.