Technical Barchetta Hunting on idle

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Technical Barchetta Hunting on idle

Couldn't see a crack, but I gave up looking as it was too hot today.

I did try "Italian tuning", but to no avail. I also took it on a nice long run to Luxembourg and back. Didn't help the motor, but it was a fun drive, especially on the way back with the top down :)

I'll check for cracks again tomorrow.

Cheers,

Matt.
 
Had same problem, hunting on idle although randomly, cutting out from time to time (especially on full lock) and hesitant to the point of stalling on small throttle openings such as driving in/out of the garage. I thought it might be ECU cos I just changed it, but pulled the air intake hose off, liberally brushed alchohol (what a waste:p ) wherever I could around the valve, plus WD40 for good measure until I could wipe no more carbon away - and now its bloody perfect!! (touch wood)

If this doesn't work (why not give it another try?) then if no luck - have you read the threads about ECU reset? It appears that if you disturb certain sensors the ECU has to 're-learn' the settings.

I still get random Injector light coming on - aren't Italian cars fun !:worship:
 
I gave it another look and tightened the clips around the joints in the air intake system, but no joy. I'll try using easy start to see if I can find the leak.

I've got a CDA and I'm wondering if anyone else has found a better way to fit them. I assume you all kept the original piece with the mass air sensor in?

Did anyone remove the breather pipe? If so did you just leave it open or put some kind of filter over it? (I mean the breather which takes air our of the engine and feeds ot back into the air intake).

Cheers,

Matt.

PS. I'll also give it another clean :)
 
Has anyone had problems with the breather pipe blocking? I noticed that some other Fiats can have this problem.

Cheers,

Matt.
 
why not fit a breather filter.

Click me

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Doc Orange Peel
(y)
 
Thanks, that gives me a better handle on it all. I'm going to try and reduce the length and complexity of the pipes which lead to the throttle body. That should reduce any leaking or at least reduce the possibilities!

Thanks for the help so far!

Matt.
 
Well, after a lot of messing about I think the problem is caused by a leak in the air intake system.

I've got a CDA fitted, but it's not an easy fit :) The BMC site shows it running straight from the throttle body over the radiator and down to the cold air.

This doesn't seem possible to me. If I try and follow this set-up I can't close my bonnet. Their diagram doesn't seem to include the metal section which contains the mass air sensor.

The guy who fitted it for me used one of the original parts to direct the system towards the ground (he had to cut a piece of hard plastic pipe with a small resonance chamber on it). The down section then contains the mass air sensor section and the CDA.

The problem with this is two-fold:
1. Once you add the corrugated metal tubing to the bottom of the CDA and point it towards the cold air the clearance of the car isn't very good. So, after a week I end up with a metal tube which is no longer round!
2. The grounding of the metal pipe seems to knock the system and cause leaks. I think the leak comes from where the hard plastic right angle pipe joins the rubber section connected to the metal body of the mas air sensor ..... if you see what I mean!

So, I've removed all the sections from the throttle body forward and re-fitted them, except the corrugated metal pipe. Last night and this morning, the car seems to run a lot better, but of course I don't think I'll get such a good cold air intake with it pointing directly at the ground.

My next ideas are to:
1. Try and mount the CDA a couple of centimetres higher to get the ground clearance I want. I'm hoping I can do this without breaking the seal around the hard plastic pipe higher up.
2. I could replace the section which comes off the throttle body and is also connected to the breather pipe. If I can find a rubber:silicon pipe which starts at 70mm for the throttle body and ends at 80mm for the mass air sensor body, plus bending at about 45 degrees I can probably mount it the way BMC indicate and get rid of the hard plastic join.

Any ideas where I can get a piece of pipe like that? I've tried my local car spairs shop, but no joy? Any thoughts regarding if I'm on the right track?

Thanks in advance,

Matt.
 
Well having got the idle problem sorted for a few days I have now ssen that oil is being lost from, I think, near one of the hoses on the right of the engine. One of them is a breather which goes into the air intake, anyone know what the other one is for?

My injector light also came on for a few seconds, I'm not sure if this is because the wires going along the top of the engine have been contaminated by the oil. In fact the wires go along a plastic support, which in my case is no longer fixed to the top of the engine and the general state of the wires seems poor, although I can't see any naked wires yet!
 
What I mean is that there are two pipes that lead away from the top of the engine on the side by the throttle body.

One goes into the air intake and so must be a breather. Does anyone know what the other does as it appears to be leaking!
 
What I mean is that there are two pipes that lead away from the top of the engine on the side by the throttle body.

One goes into the air intake and so must be a breather. Does anyone know what the other does as it appears to be leaking!
Any pictures we can see?
From memory the one coming from the side of the engine is the breather of the oil and the other is coolant .Feel free to correct me :D
 
On an Hgt theres two oil breathers off of one pipe (1 into 2). Not sure if a B's the same? but i'd imagine it is. If it is the same and one pipe was sucking in air it would definatley run like a sack of sh-te.
 
Thanks for that. Yes it is one into two. I'll try and get a photo or two but my camera has packed up so it looks like I'll need to go shopping first!

Matt.
 
Mine went in today to have the idle hunting looked at - result!. New variator & timing belt under warranty.
 
Does she run a lot better now?

Work's not done yet - 11th June (had to wait for a loaner) but will post when done.

Since they prodded and poked around I seem to have the "diesel sound" on idle whereas previously it was only when the engine was cold :(

As it's now on 33k and the last service was July 06 I'm gonna get them to do the 36k whilst it's in there... hoping to save a few ££ on labour and oil as they'll be in there anyway, right?
 
By the way..
Some of you might remember that I use to have this problem (engine stalling when idle) occurring on no regular pattern.:confused:

The solution to my problem was..... changing petrol station!!!! (y)
I always try to use ONE petrol station.:rolleyes: Cant really explain why. The one I was Using was EKO(n) and now I m using a SHELL(y) (normal 95 unleaded, no V-Power stuff).

This change as well as a carb cleaner did the job for me. :slayer: The car hasn't stalled for about 2 months now :cool:
 
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