The idle of my fiat is low. It has a flat spot when I lull away, however fine when i drive
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.
I had a fiat punto that did this is it over heating as well if it is it has a colant air block sounds stupid but i have known and put wright at least a dozen of these and are all still running fine if not iregular idles are caused by faulty plugs faulty coil packs leaking hoses to carbs or injector could be faulty leads if you check the above im sure one of them will solve it cheers ivan
SOURCE: uno,power
Sounds like you got some bad gas. I would either try an additive to remove water and some octane boost. If that doesn't work you will need to drain the tank. This has been a real problem with the price of gas going up. Some stations in my area have been shut down for putting water in the gas. If it was running fine before you got gas, then more than likely this is your problem.
Rtae this as a Fixya if this solves your problem. Ask more questions if you need to.
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 punto 02 reg 1.2
I'd start with replacing fuel filter and running a good fuel system cleaner through it with next tankfull
SOURCE: my fiat idles but wont rev
That maybe what the rev limiter is set for.That way you can not over rev causing engine damage.
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Hi,Please explain what you mean by "irregular". Have you tried adjusting the idle?
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