That means that your idle is set too low and the alternator cant turn fast
enough to produce the required voltage and amperage needed to keep the
engine running. The oil light coming sounds like it is being caused by the
same thing, either that or the engine is worn enough so that at low rpms,
the oil pump cant pump enough oil to keep the pressure above 4-5psi in the
I recommend adjusting the idle (if you can) to a higher idle.
Where did you purchase this car? I see 30mph, meaning US standard, but have
never heard of the KA model in the US, it sounds foreign. Is that another
name for a different model?
I don't think the idle can be adjusted because it is controlled by the
electronic fuel injection.
However, with one of my previous (fuel injected) cars I also had a
problem with low idle speed. It turned out to be a filthy actuator that
controls the throttle valve on idle. If it gets filthy it can't control
the throttle quickly enough, causing the engine to die when the revs
drop to fast.
You may also experience a fluctuating idle speed, but you may not have
noticed that because only some Ka's have a rev-counter.
Usually cleaning the actuator does the trick, otherwise it must be replaced.
It's a european model (they still use mph in the UK). See
http://en.wikipedia.org/wiki/Ford_Ka for some info.
You are right, it is fuel injected and therefore the idle is controlled
solely by the computer. The computer will adjust the IAC and injectors to
control the air:fuel ratio in the cylinders. So it looks like it might be
the IAC giving your problems.
I wasnt aware of that.. HMM, interesting. Thanks for the info.
The Ford KA is sold in Asia, Europe and Latin America and built in Spain
(with production changed to Poland) and Brasil. It is a small car similar to
the Peugeot 107 and Toyota Aygo. The class of car that these are in is
smaller than anything sold in the US and is called a city car. They are
intended to be driven around a city and not on the highway (hence the class
I think they are sold in Mexico, which might be a source of the car in the
US, although it is not built to US safety standards.
Ok after looking it up, this car is European in nature and not a US car. So
what ENGINE are we talking about here, MILEAGE on this car, and what YEAR..
Need more input..
I have to say it sounds like an IAC valve. Does it do it when you are
stopping or just slowing down below 30mph? Will it do it if you dont take
your foot completely off the accelorator pedal?
Keep in mind most people who post in this forum are American or Canadian,
and as such, you have vehicles over there that most of us only hear bits and
pieces about, but never seen.. LOL
I did see there are two engine sizes available in the new KA, but again I
dont know what year your KA is, or even what the odometer is reading.
You can post in metric, most of us can do the conversion (if needed) since
Ford makes Canadian cars as well and they are all metric.
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