General Motor hold just after the first start

[GHALICH]

hello world!

I have a concern on my fiat palio ELX 2006 (Engine: 1.2 16V fire 100000 Km)
when I start "even the hot engine, it starts at quarter turn but stops

IMMEDIATELY after 2 seconds
I restarted a second time and it does not stop without problem
diagnosis indicates defect, "the probe lamnda"

HOW can ME explain this PROBLEM
Thank you

 

[Peter Pick-Up]

Well, it's probably the Lambda sonde, or O2 sensor in the exhaust.
Change it for a new one, see if this cures the problem.

 

[GHALICH]

A SCANER TECHNICAL SAY THAT THE "Lambda sonde" is never the problem

 

[Peter Pick-Up]

Well, they do go bad, FIAT advises to change them regularly ( every 120.000km or so.)
In fact the lambda sonde ( O2 sensor) on my Palio failed last year at 130.000km, so I had to replace it....!

 

[GHALICH]

But had you this problem before the change THE SONDE "PETER"!!!

Well, they do go bad, FIAT advises to change them regularly ( every 120.000km or so.)
In fact the lambda sonde ( O2 sensor) on my Palio failed last year at 130.000km, so I had to replace it....!

 

[Peter Pick-Up]

Fuel mileage was slightly higher, sometimes the engine suddenly died, or hesitated, and sometimes, after a cold start, the engine ran on 3 cylinders.
At my local Fiat dealership, they hook the car on the Fiat Examinizer computer, and that showed one stored fault: defective lamda sonde.
After changing the O2 sensor, everything went back to normal.