Fiat Cinquecento idle problem
PC
speed in the last
few days and just today the idle speed has begun to swing between the normal
idle speed and around 1500 rpm. It does this on a cycle of around 3-4
seconds. I dimly remember a reference to a faulty Lamda sensor causing this.
Does anyone recognise these symptoms?
TIA
Pete
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Andy Hewitt
> Our N Registered 899cc Cinque SX has developed a faster than normal idle
> speed in the last
> few days and just today the idle speed has begun to swing between the normal
> idle speed and around 1500 rpm. It does this on a cycle of around 3-4
> seconds. I dimly remember a reference to a faulty Lamda sensor causing this.
> Does anyone recognise these symptoms?
> TIA
> Pete
Yes, get the Lambda sensor checked first. After that you'll need to get
plugged into a Fiat Examiner tester.
I presume you've checked spark plugs and such first?
--
** Andy Hewitt ** FAF#1 'It's better burn out, than fade away'
Mac G3/400, Diversion 600s, Trekky, Honda Concerto EX
*Web page update - 10/00* http://homepage.ntlworld.com/ahewitt/index.htm
PC
I haven't checked the plugs because this up-down up-down cycling isn't the
sort of thing that plugs would cause, in any case they're fairly recent. I
was hoping to avoid the Fiat Dealer because of their hourly rates. Can't my
local guy with the Sun gear do any subsequent setting up?
Pete
Andy Hewitt <ahe...@ntlworld.com> wrote in message
news:1ejkidh.1574c461t3fa80N%ahe...@ntlworld.com...
> PC <pete.c...@HATESSPAMbtinternet.com> wrote:
>
> > Our N Registered 899cc Cinque SX has developed a faster than normal idle
> > speed in the last
> > few days and just today the idle speed has begun to swing between the
normal
> > idle speed and around 1500 rpm..........
> Yes, get the Lambda sensor checked first. After that you'll need to get
> plugged into a Fiat Examiner tester.
>
> I presume you've checked spark plugs and such first?
>
> --
> ** Andy Hewitt ** FAF#1 'It's better burn out, than fade away'
> Mac G3/400, Diversion 600s, Trekky, Honda Concerto EX
> *Web page update - 10/00* http://homepage.ntlworld.com/ahewitt/index.htm
Andy Hewitt
> Thanks for the reply Andy.
> I haven't checked the plugs because this up-down up-down cycling isn't the
> sort of thing that plugs would cause,
Just check them anyway, it only takes a few minutes, and they can be the
root cause of many a silly problem.
> in any case they're fairly recent. I
> was hoping to avoid the Fiat Dealer because of their hourly rates. Can't my
> local guy with the Sun gear do any subsequent setting up?
Hmm, it might be cheaper in the long run to go to a Fiat dealer - even
if you can just get the initial diagnosis done.
I doubt any third party testers could diagnose properly. Unless it's a
really early model, it'll have the security system on it, and they
haven't disclosed the data for this so that it can be bypassed.
Steve H.
Steve.
PC
As Muttley says "Frazzen, Razzen, Grazzen....."
I really didn't want to have to pay their prices. It's the only thing about
the car that I'm unhappy about. I hate electronic boxes!
Pete
Andy Hewitt <ahe...@ntlworld.com> wrote in message
news:1ejlf78.b228e01qxddxyN%ahe...@ntlworld.com...
Mike
Andy Hewitt <ahe...@ntlworld.com> wrote in message
news:1ejlf78.b228e01qxddxyN%ahe...@ntlworld.com...
> PC <pete.c...@HATESSPAMbtinternet.com> wrote:
>
> > Thanks for the reply Andy.
> > I haven't checked the plugs because this up-down up-down cycling isn't
the
> > sort of thing that plugs would cause,
>
> Just check them anyway, it only takes a few minutes, and they can be the
> root cause of many a silly problem.
>
Agreed , these cars are very sensitive to spark plugs , we frequently find
problems if the wrong make is fitted. Only fit the genuine Fiat specified
type (which I beleive is a Champion on this car) and do not fit any other
make if you are to avoid problems.
Regards
Mike
Andy Hewitt
> Thanks Andy,
> As Muttley says "Frazzen, Razzen, Grazzen....."
> I really didn't want to have to pay their prices. It's the only thing about
> the car that I'm unhappy about. I hate electronic boxes!
> Pete
If you buy a car under 8 years old, you can't get away from it.
PC
jobbies. Are you saying that I should seriosly consider new Champions as a
cure for the present problem Mike? It's a good bit cheaper than forking out
for a Lambda sensor! Or are you saying that there is a Lambda sensor problem
caused by the wrong make of plug?
Pete
Mike <mik...@iname.com> wrote in message news:3a06a505$1...@news.telinco.net...
Andy Hewitt
> It's done around 3,000 flawless miles on the fancy Bosch 4 electrode
> jobbies. Are you saying that I should seriosly consider new Champions as a
> cure for the present problem Mike? It's a good bit cheaper than forking out
> for a Lambda sensor! Or are you saying that there is a Lambda sensor problem
> caused by the wrong make of plug?
> Pete
You could be looking at such a problem. I don't think the make of plug
per se' is the problem. In fact I think Champions are crap, Bosch are
much better plugs. However, plugs made specifically for car
manufacturers are often made to better tolerances than the ones you by
over the counter.
If you really want a reliable plug, go for NGK.
A faulty plug could quite easily damage a Lambda sensor though. So you
could easily have both problems, fitting just a lambda sensor, without
the plugs isn't going to cure it, nor is vice versa.