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Old 28-04-2015   #31
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

wouldnt it have problems also when driving if it were lambda?
either way not throwing any more parts against it ,to see what sticks until the diagnostic cable arrives for it
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Old 29-04-2015   #32
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Does it still run erratically at idle if you increase the revs very slightly on the throttle, or if you place some load on the alternator (eg by turning on the a/c, if you have it, or the main beam)? I had a fault like this many years ago on a Renault Espace (we called it the Bastard Renault from Hell in my family) which had a worn idle valve which wouldn't stay in a constant position at idle speed. As it wobbled open and closed, the revs got more and more erratic as the diagnostic electronics tried to correct the fault, to the extent that it could even stall itself, but as soon as the revs rose above the critical point, it magically smoothed out and ran sweetly (well, as sweetly as the Douvrin engine ever did). I never did fix it - that was one of many niggling faults it had. I px'd it to a dealer, and made damned sure the a/c was switched on when he tested it
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Old 01-05-2015   #33
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Not sure if this helps, but...

Mine had a tendancy to almost stall when slowing for junctions and a slight hesitancy on acceleration. Not a major hiccup, just a slight running weak feel. The idle could occasionally dip as well.

Had the injectors refurbished, slight improvement.
Changed the fuel filter, slight improvement.
Changed the fuel pump today - bingo!

Idles better, no weak running and although it still had loads of power it probably has about 10% more now
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Old 03-05-2015   #34
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Quote Originally Posted by HP View Post
Changed the fuel pump today - bingo!
Hi Pete.
What fuel pump did you fit, is it std or performance type.
Dave
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Old 04-05-2015   #35
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

The fuel pump can be a answer for Itaa, but i would really go for the intake problem.
It the lambda sensor was faulty, the car would run in degraded mode, and will drive ok with no stall or idle problem, but with a very high fuel consumption.

It can be a leak, but i really think it's something with the flowmeter.
I had a similar problem, and i disassembled the intake system, clean the flowmeter sensor with brake cleaner, it was better, and then check for connection of the sensor itself, cables and outlet. i had little bit of oxydation and a loose connection of the flowmeter 3 pin outlet, wich was the real problem.

Hope it helps.
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Old 04-05-2015   #36
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Quote Originally Posted by Dave-M View Post
Hi Pete.
What fuel pump did you fit, is it std or performance type.
Dave
Went for a Magneti Marelli standard spec replacement. Changed the whole unit including level transmitter rather than faff on - I had seen just the pump element itself available.
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Old 05-05-2015   #37
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Got the cable today and all I can just say is *** U FIAT , can't even make a proper software which works.. let alone can't even include standard obd2 which from that year was mandatory and other manufacturers had it already way before!

Tried installing it on windows 7- Can't connect to ecu says in the FiatEcuScan soft
Anyone knows what the hell is going on why It isnt able to connect?
btw Once I plug in the cable some FT232R USB UART thing appears in device manager-however says that it doesnt have drivers, and It doesnt auto installs drivers for it, tried manually installing driver for it-No success,it doesnt recognizes the driver files as correct ones..


Anyone maybe knows what could be the problem?

Tried installing it as well on XP , and I dont even get to the stage where it installs the Com Port...

Soooo frustrated since none of this software crap even works,tried searching in other forums for solution ..nothing..
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Old 05-05-2015   #38
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Hi HP,
regarding the fuel pump and level transmitter; how accurate is the sender? Mine is quite poor and I am considering replacing it. Where did you source the pump and did it arrive with the gasket?
Cheers
Steve
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Old 11-05-2015   #39
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

itaa5x, I have used the EcuScan software on an Alfa 159 and it's brilliant, don't give up. The only kit I have managed to get working on my B so far is a very old Sykes Pickavant setup, which is awful in comparison.

Steve, the sender is reasonably accurate on mine but does wander a little at lower levels. I'm currently just over 1/4 tank and any right hand bend sees a drop and the warning light come on. The new one is the same as the old - all my Cinquecentos were the same - it's a Fiat thing!
I got my pump from eurocarcare: http://www.eurocarcare.co.uk/ - ask for Big Mick.
The gasket doesn't come with it and you will need to buy it separately.
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Old 12-05-2015   #40
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Many thanks for the reply. My tank is half full when the low fuel light comes on. Perhaps I just need to 'bend' the float wire I little.
Cheers Steve
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Old 17-12-2015   #41
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

That's very useful information! I have same problem. But after one week my alternator died. By the way - it's very difficult to change alternator! ;-( today i'll put restored alternator back and i hope second problem will be resolved
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Old 22-12-2015   #42
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

What and where is the IAC valve?
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Old 22-12-2015   #43
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

It's a valve that controls the idle speed and engine breaking force when you lift the throttle. It basically bypasses the throttle to allow a small amount of air into the engine even when you lift the throttle fully.
It's located on the intake side near the throttle body and it looks like this:

http://g03.a.alicdn.com/kf/HTB1sGnWI...41-091-X10.jpg

It's mounted with two bolts and connected with a 2-pin connector.
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Old 23-12-2015   #44
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

Quote Originally Posted by HP View Post
Not sure if this helps, but...

Mine had a tendancy to almost stall when slowing for junctions and a slight hesitancy on acceleration. Not a major hiccup, just a slight running weak feel. The idle could occasionally dip as well.

Had the injectors refurbished, slight improvement.
Changed the fuel filter, slight improvement.
Changed the fuel pump today - bingo!

Idles better, no weak running and although it still had loads of power it probably has about 10% more now
Although mine is now locked up for winter, i have noticed it would stall when breaking after a steep descent or braking hard. As i do less than 1000 miles a year in it, it was not really me worh investigating.
I think i'll give it a full service over winter and that may help for when it comes out again in May.
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Old 14-04-2016   #45
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Re: What could Be Wrong with my Barchetta? Stalling and hectic idle

My Barchetta did exactly this last night. Wouldn't idle steady, and was trying to stall when stationary. It did stall as I stopped to reverse into the drive. Tried the car 20 mins later and the idle was fine. Fine again this morning on start up, although it will get a decent drive today...

Looks like some investigation is needed.
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