Technical Running issues 93 Cinquecento

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Technical Running issues 93 Cinquecento

JTPickup

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Hi
I'm experiencing running issues in my 899cc cinq.
It has been running well up until yesterday when it feels very hesitant on acceleration and almost like it's going to start kangarooing. Not smooth to drive like it normally is.
All fluids are fine. No warning lights on the dash.
Is there anything obvious I should be checking/replacing?
Many thanks
 
I had the same problem you describe. It was the MAP (open your bonnet, look at the passenger side .. it also has a vacuum tube connected).

When pulling away it felt as though I had kangaroo petrol, running .. it would sputter and hesitate and then die but restart immediately.

Try disconnecting the electrical connector at your MAP - if the symptoms subside or disappear, suspect the MAP.

The attached thumbnail shows you what your MAP looks like.

You can also try cleaning the stepper motor - an air valve. Face your engine and look at the injection system. Bottom leftish is a sensor held in with 2 screws and an electrical connector. Remove, clean the body and the sensor.

Sometimes it's very difficult to trace a fault. It may be worthwhile looking at this thread:
https://www.fiatforum.com/cinquecento-seicento/450186-seicento-2002-stuttering.html
 

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Thank you very much for your reply. I shall see if this can locate the areas you mention and follow your steps.
 
Another point to bear in mind is the fuel pump ..

If the car begins 'misfiring' or cutting out whilst accelerating or at higher speeds (but is ok when idling..) .. the in-tank fuel pump may be on its last legs
 
Thanks. At the moment the car isn't cutting out.
I read the links to the other post and feel pretty deflated now as it sounds like it could be so many things!
One thing I had noticed over the last couple of weeks before this started is a slight smell of fuel in the cabin after I'd driven the car.
 
Just an update..drove it yesterday for 12 miles with no issues at all.
Very strange, could it be affected at all from the very intense heat last week? It was one of the hottest days when I took it out and it started playing up.
 
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