I think these are probably all caused by the same thing, whatever it is...

 

There's quite loud hissing from somewhere around the the balance bar on the passenger side, at the back of the plenum ish, near where the PRVR vac line comes out. (I've bypassed that by the way.)

 

I've tried disconnecting and reconnecting all the coil packs, so I know what the engine sounds like and how the idle changes - but if I wiggle the harness around that same area something definitely different happens. So I don't think it's just cyl 5/6 coil pack. Especially because there's what sounds like a relay clicking (just the once) and after the click everything seems OK until you wiggle some more and dislodge whatever the problem is again...

 

Idle's generally good but not on the overrun - if you rev it a couple of times the idle will bounce almost down to cut out, and then slowly climb to the right level, or in fact sometimes it will cut out totally.

 

Is there an idle relay or something round there?

 

Bear in mind this engine has all just been plugged back together... they might have missed something! Are there any vac hoses to particularly check round there?

might be the IAA/AAV solonoids... clicky

 

you can use thius to adjust the idle, but it probably just needs a good dose of carb cleaner / wd40. also worth checking the electrical connections for the usual crud

That does look like the right sort of area...

 

BTW it's running rich on idle too, would you expect that if something's stuck open / closed?

might be the IAA/AAV solonoids... clicky

 

you can use thius to adjust the idle, but it probably just needs a good dose of carb cleaner / wd40. also worth checking the electrical connections for the usual crud

 

Check the hose between the balance bar and the solonoid these are notorious for cracking and splitting

Check the hose between the balance bar and the solonoid these are notorious for cracking and splitting

 

From memory poking about last night that one's spanking new red hose, but I'll double check with hangover tomorrow morning. :D

Checked... that hose is fine (or looks it anyway!)