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Model specific boards => Golf mk4 => Topic started by: Rod1-gti on 26 June 2013, 17:47

Title: does anyone elses 20vt do this...
Post by: Rod1-gti on 26 June 2013, 17:47

On odd occasions, when starting from cold, she revs to about 1250rpm (choke) but after a few seconds it hisses, almost like a pressure valve has released. just curious as to what it is as it doesn't do it all the time.

Title: Re: does anyone elses 20vt do this...
Post by: WadGTI on 26 June 2013, 20:24

Get the idle control valve and give it a clean...see if it clears up.

Mines does it now and again on cold start but usually drops quickly. I need to do my valve. :smiley:

Title: Re: does anyone elses 20vt do this...
Post by: Rod1-gti on 26 June 2013, 21:26

Cheers boss, ill give it a try  :smiley:

Title: Re: does anyone elses 20vt do this...
Post by: Jin_C on 26 June 2013, 22:04

I dont think there is an idle control valve on the 1.8t's only throttle body.

Title: Re: does anyone elses 20vt do this...
Post by: 52GTIPETE on 27 June 2013, 13:15

It will be the PCV for sure. Mine did this with a split in the small pipe from the PCV to the inlet manifold.

Title: Re: does anyone elses 20vt do this...
Post by: Rod1-gti on 28 June 2013, 12:06

PCV = Pressure control valve I assume?