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phil

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Since: Nov 15, 2007
Posts: 2



(Msg. 1) Posted: Thu Nov 15, 2007 9:41 am
Post subject: Engine ckeck light has come on!
Archived from groups: alt>autos>hyundai (more info?)
This is the problem that has beaten my garage.

Car-Accent 1.6 CDX 3 years old

The engine check light has come on twice in three days and flashed for
about 15 secs each time. Both times it occurred after just over a minutes
driving from cold. The garage checked the error messages and it said
‘Random misfire on cylinder one, and on two, and on three, and on four’.

They took the car in for days and checked everything that could be checked,
but came up with the answer that all was perfectly in spec and that nothing
was wrong.

Can anybody help by suggesting what could be wrong with the engine. Any
serious sleuthing would be very welcome.

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esp1

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Since: Jan 01, 2005
Posts: 1154



(Msg. 2) Posted: Thu Nov 15, 2007 8:43 pm
Post subject: Re: Engine ckeck light has come on! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"phil" <a@a> wrote in message
news:Xns99E99F8C5903Dusususus@216.196.109.131...
> This is the problem that has beaten my garage.
>
> Car-Accent 1.6 CDX 3 years old
>
> The engine check light has come on twice in three days and flashed for
> about 15 secs each time. Both times it occurred after just over a minutes
> driving from cold. The garage checked the error messages and it said
> ‘Random misfire on cylinder one, and on two, and on three, and on four’.
>
> They took the car in for days and checked everything that could be
> checked,
> but came up with the answer that all was perfectly in spec and that
> nothing
> was wrong.
>
> Can anybody help by suggesting what could be wrong with the engine. Any
> serious sleuthing would be very welcome.

Intermittent problems are difficult to diagnose. Misfires can happen from
ignition parts starting to go bad. Modules, wires, etc. Damp and cold
weather magnifies that sort of thing. Have the plugs been changed? Wires?
If nothing else crops up, they are cheap places to start.

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phil

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Since: Nov 15, 2007
Posts: 2



(Msg. 3) Posted: Thu Nov 15, 2007 8:43 pm
Post subject: Re: Engine ckeck light has come on! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Edwin Pawlowski" <esp.TakeThisOut@snet.net> wrote in
news:ec2%i.6072$Z01.5807@trndny01:

>
> "phil" <a@a> wrote in message
> news:Xns99E99F8C5903Dusususus@216.196.109.131...
>> This is the problem that has beaten my garage.
>>
>> Car-Accent 1.6 CDX 3 years old
>>
>> The engine check light has come on twice in three days and flashed
>> for about 15 secs each time. Both times it occurred after just over a
>> minutes driving from cold. The garage checked the error messages and
>> it said ‘Random misfire on cylinder one, and on two, and on three,
>> and on four’.
>>
>> They took the car in for days and checked everything that could be
>> checked,
>> but came up with the answer that all was perfectly in spec and that
>> nothing
>> was wrong.
>>
>> Can anybody help by suggesting what could be wrong with the engine.
>> Any serious sleuthing would be very welcome.
>
> Intermittent problems are difficult to diagnose. Misfires can happen
> from ignition parts starting to go bad. Modules, wires, etc. Damp
> and cold weather magnifies that sort of thing. Have the plugs been
> changed? Wires? If nothing else crops up, they are cheap places to
> start.
>
> Intermittent problems are difficult to diagnose. Misfires can happen
> from ignition parts starting to go bad. Modules, wires, etc. Damp
> and cold weather magnifies that sort of thing. Have the plugs been
> changed? Wires? If nothing else crops up, they are cheap places to
> start.
>
> Thank you Edwin Pawlowski. The garage checked all the electrical side
including leads and plugs etc (which were changed 5,000 miles ago) and
found absolutely nothing. They concluded it might be mechanical but
couldn't find anything. Any more ideas?
>
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hyundaitech2

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Since: Oct 09, 2004
Posts: 1964



(Msg. 4) Posted: Fri Nov 16, 2007 12:36 pm
Post subject: Re: Engine ckeck light has come on! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Since you have misfire readings on all four cylinders, you should start
looking at things that affect all cylinders equally, such as fuel
pressure, fuel quality, and perhaps even the crank sensor.

--
Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai/
More information at http://www.talkaboutautos.com/faq.html
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esp1

External


Since: Jan 01, 2005
Posts: 1154



(Msg. 5) Posted: Fri Nov 16, 2007 12:50 pm
Post subject: Re: Engine ckeck light has come on! [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"phil" <a@a> wrote in message
>> Thank you Edwin Pawlowski. The garage checked all the electrical side
> including leads and plugs etc (which were changed 5,000 miles ago) and
> found absolutely nothing. They concluded it might be mechanical but
> couldn't find anything. Any more ideas?
>>
>

Since in both cases it happened from cold, make a note of the temperature
outside. It may only do so, say, below 30 degrees. If that continues, leave
the car at the shop on a cold day and have them put the meter on it when
they start it up. I can't think of many mechanical items that can cause a
mis-fire. Since it happens on all cylinders, it is more likely to be
something like an ignition module than an individual wire. Engines have
many sensors also and one may be malfunctioning giving a bad signal,
injection problem, etc.
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