Put a post up the other week about having idle problems following fitting a Badger 5 TIP and a few other bits. Once it was all back together it was giving me a rough low idle probably from an air leak and after hunting about I found three cracked plastic hoses and a hole in the rubber junction jobby that attaches to the end vaccuum outlet on the inlet manifold.
So rather than splashing out on VCDS (mistake?) to check for fault codes etc I decided to delete the spaghetti of vacuum tubing both under the inlet manifold and on the cam cover and fit a catch tank.
This was the result:
Didn't really have space to fit the catch tank in the bulkhead area and as I made an extra battery clamp a while back I decided to just weld a little bracket onto that to mount the tank to.
New catch tank pipe connects directly to the crankcase breather outlet and deletes the standard PCV (which was also looking ropey). I also bunged up the larger vacuum port underneath the middle of the inlet manifold.
Also decided to vent to atmosphere since the hockey puck valve was full of oily crud and a new one from Audi was £30+VAT. So I just ran a hose to the discharge underneath the car.
Fitted a new pipe from the servo as this was cracked at the bulkhead connection. Added an alloy one way valve also to replace the standard plastic one.
Was also fed up with nearly snapping the dipstick tube (especially as I have just bought a new one) everytime I wanted to take the bracket that sits in front of the inlet manifold off. So I made a little removeable guide so I can just unbolt that instead which should simplify matters.
Have so far just hidden the N249 valve for the time being until I get round to making a proper bracket for it. Also the clear PVC hose may look lovely at the moment but will probably only be clear for about 5 minutes before it turns yellowy-brown so I'll be on the lookout for something opaque and more flexible if I can find it.
Anyway, after all that lot, I started the car hoping that everything would be solved and I'd avoided buying VCDS (and a laptop) for the time being...........but no, still idles like a pile of sh*t. It has changed though as now it idles high and sounds like it's misfiring.
Any help would be great as it's been off the road for a while now and I want to drive it!!
I might have to resort to getting the other car Mot'd to use in the meantime!