The car idles randomly, it is impossible to say when it will do it, sometimes after driving for about 5 plus kilometres, sometimes from the word go after starting in the morning.
Hot or cold? 2005? CODES.
OBD plug under dash.
Check for codes.Google the codes. That's JUST a beginning,here.
IAC or cold start valve? NOT on a 2005.
SOURCE: when i start my fiat it idles irregular and sluggidh pull away
The
following are the general instructions on the start of diagnosing any
electronically controlled engine or transmission problem. The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM), which is very rarely the problem. Other
basic checks must be done as well such as mechanical problems with
the engine as well as engine state of tune and mileage on the engine.
The transmission can have mechanical issues as well such as no gear
engagement at all or a failed pump or other pressure related
problems.
SOURCE: fiat palio 16v stalls all the time when started,
a valve on the inlet manifold but what one without seeing it ?? honestly do not know ,check for a split or perished vacumn hose first though
Testimonial: "cam belt broke a month or 2 ago and 8 valves where replaced!"
SOURCE: fiat palio 16v
its a dodgy sensor ---but what one?? i would go for the autochoke one first but i have no idea what one it is ,now ask me about a seat 124 or a seat 1500 ,same as fiat but made here in spain
Testimonial: "thanks!"
SOURCE: I am facing starting problem in Fiat Palio 1.9 D
propably there is a pblm with the diesel injection mechanism(sensor maybe)
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Thank you very much Colin, you have been a huge help ! silly question ththough, what do the vacuum pipes look like ? suppose they the ones that does not have water running through them ?
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