GolfGTIforum.co.uk

Model specific boards => Golf mk5 => Topic started by: trizza on 17 July 2010, 08:13

Title: Hissing from engine
Post by: trizza on 17 July 2010, 08:13

Aafter various issues with my exhaust warning light coming on the garage changed the MAF sensor which seem to have cleared the fault.  However when you turrn the engine off a loud hiss comes from the engine bay sounding like it's leaking pressurised air.  I presume this is not normal?

Another issue is that when idling and in D, the engine sits at about 700rpm, but when you put it into N or P it increases to 1100rpm! Is this another fault? 

Am honestly starting to lose the will to live with this car...

Title: Re: Hissing from engine
Post by: Saint Steve on 17 July 2010, 14:06

If its coming from under the engine top cover, the PCV valve may well have blown. If it has a lumpy tickover aswell, then replace that, cheap and easy to do.

Its a rubber diapragm that is a known weak spot on the engine breather circuit.

Mine done the same thing, hissing after shut down. Replaced the unit. £30 for the valve housing, done in 15 minutes

Title: Re: Hissing from engine
Post by: No Golf Clubs at all on 18 July 2010, 05:30

Do you still have the part number? Is it easy as a diy job?

Title: Re: Hissing from engine
Post by: jimmyGIT on 22 July 2010, 21:44

Hope so ,Its a complete git on my 1.8t. :undecided: