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As i've not had much response to my other technical thread's, i'll try something simple..
Could someone tell me if there should be a hole on the top of the carbon canister on a 97 1.4 16v? There's obviously the 2 pipes that come out the top, but mine has a small hole which looks like its been drilled in the top of it? If it's not supposed to be there, then my idling problem could be down to an air leak from this hole???

Cheers
Steve

Steve-o wrote:As i've not had much response to my other technical thread's, i'll try something simple..

luck of the draw that mate - dont take it personally



I'll look at my carbon canister when i finish work. Assuming I can figure out what your referring to

luck of the draw that mate - dont take it personally

Not taking it personally mate. It's just not what im used to. On the Corrado forum, the response you get to technical posts is massive!
I've posted 3 different threads on this forum, all relevant, and only yourself and daveburton replied.
Looking at other posts, it seems the technical ones don't get much response. BUT if you post up pictures, or what mods you're thinking of doing/done it seems to get a huge response. That's just my impression though. Maybe i'm jumping the gun a bit...

Carbon canister is mounted underneath the cold air feed pipe (assuming you have the standard airbox still fitted). It's a big black 'can' shaped thing, with 2 pipes coming from the top of it...

Cheers for replying 13twelve, much appreciated....

Steve

lol the big mk4 technical guy (in my eyes, bstardchild with his white 8v mk4) has been quiet recently


i guess the ratio of technically minded to "no clue on how it works" favours the "no clue on how it works" lot on here

lol I fall into the latter - but somethings I am learning...


Will get the torch out when I get home and have a look.

As above

If I knew the answer I'd help

But I have no idea what it is

the can that your on about near the o/s/f chassis leg does have a hole in it but it's ment to have a rubber bung in it as it a breather hole.
sorry i haven't mailed you not been on for a bit.

if you want to see if its the idling problem, bung up one of the pipes, and then see if it idles properly


i wouldnt think thats the problem personally, but give it a go

mk4s seem to idle like s**t for loads of people, but fine for others

where are they supposed to idle?? mine idles at about 900rpm

Cheers for the replies guys... Apologies for sounding off a bit yesterday, but it's really beginning to get on my nerves now.. And i don't even drive the thing!!!
ximon, the idling speed seems to stay pretty constant at around 900rpm. It just 'chugs' when warm, like it's firing on 3.. It's definitely not that though, as you can see the throttle butterfly 'flapping' when the airbox is removed.
jezmk4, i tried blocking the pipe from the purge valve to the inlet last night, but it just did the same thing. Unblocking it, as if to simulate an air leak, it idled alot smoother, but a little fast...
phat6n16v, if it has a rubber bung in it, doesn't that block it up, meaning it can't breathe?? I'll try and post a pic at the weekend, to see if it looks the same as everyone elses... Like the BBS's on your 16v by the way.

As i've mentioned in previous posts, i've replaced the yellow temp sensor, the lambda sensor, and the throttle body (brand new). I'm hoping that programming the throttle body will cure it, but im reluctant to pay an hours labour for something that effectively takes 10 minutes! Some of my corrado buddies have VAGCOM, so if i knew how to do it, i'd have a bash myself... Anybody know?
Not 100% that this will cure it though. I reckon it has an airleak somewhere, but i've checked all the airways and vacuum tubes, and all seems fine. There is a MAP sensor bolted to the drivers side of the inlet though, are these prone to breaking? Could it be this causing the probelm?

Sorry, so many questions, but there must be some techy out there who knows???

Cheers
Steve

after i cleaned my throttle body thing it now idles at 1000rpm rather than 800rpm

so is that a bad thing?



(couldnt spot that hole this morning...)

i would think with a dead MAP Sensor the car would run like s**t in general

What are the EXACT symptoms of the bad idle mate

the bung on top of the can has a cross on the bottom so it has air passages to allow the canister to breath.
how does yours idle, mine first thing in the morning the engine doesn't like idleing and cuts out if the revs arnt keeped up a thats due to the temp sender on the thermostat housing.
if you can give me a clue on what its like i'll try to help.
My car dont look good on steely's do it?

with a dead map sensor the car will not run at all?

Didn't have a chance to look at the car at the weekend, as the girlfriend was out it it...
Idling symptoms...
It fires up straight away, either from cold or when warmed up, so no problems with starting.
Once started, when cold there is no problems with idling at all, but there is a bit of a flat spot on light throttle openings when under load. Not sure if it's related..
Once the engine is warmed up, the idling problem starts. It's not like the car is 'hunting' for the correct speed, as this stays pretty constant at around 900rpm. It sounds and feels like it's firing on 3 cylinders, and does like a 'chugging' noise. I know it's not a misfire though, as when you remove the airbox cover, you can see the throttle butterfly 'flapping', which is obviously causing it to 'chug'.
I've replaced the temp sensor, lambda sensor and throttle body, but the problem remains. I'm hoping a simple re-program of the throttle body will cure it, if anyone could shed some light on how this is done with VAGCOM, it would be much appreciated??
Don't hold out much hope though.....

Cheers
Steve

theres another post on here saying that the throttle body can easily be reprogrammed on vag com