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  #1  
Old 05-26-2006, 08:00 AM
Andy Andy is offline
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Posts: 10
Default Punto Mk1 Weird Electrics

A strange thing seems to be happening I had the punto Mk1 sitting on the
drive for over a week without starting it and when I went to start it the
ignition light and injector light on the dash were very faint and I tried
turning over the engine but the engine clicked and that was about it. I then
tried jump leads from a battery I have had on charge the last couple of days
and that didn't turn over the engine. So I decided to hook up the jump leads
to my other car and I ran the car for a while then went into the punto
turned the key but no red lights came on the dash at all but the Speedo shot
up to 40mph for some reason and the fuel gauge moved but no click or a
sound from the engine, it wont even try to turn over.

At the moment I have checked all fuses including those in the engine
compartment and they are OK. So at the moment all I get on the dash is no
lights but the Speedo shoots up to 40mph. Thinking of nothing else to do I
am thinking maybe the electrics have malfunctioned or the ECU is a bit
confused so I have disconnected earth on the car battery and hoping this
might reset things? - do I leave the battery disconnected overnight or would
10 minutes or something do it?




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  #2  
Old 05-26-2006, 10:45 AM
ato_zee ato_zee is offline
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Default Punto Mk1 Weird Electrics


On 26-May-2006, "Andy" <andy@indigo.ie> wrote:
Quote:
So I decided to hook up the jump leads to my other car and I ran the car for a while then went into the punto turned the key but no red lights came on the dash at all but the Speedo shot up to 40mph for some reason and the fuel gauge moved but no click or a sound from the engine, it wont even try to turn over.


You need a lead with a 12V low wattage bulb on the end to trace
voltages, or a test screwdriver with a flying lead and clip, the clip
you clip onto a good earthing point, engine block or chassis.
Start across the battery, then pull the small push on connector
on the starter, poke the screwdriver tip in to make contact, and get
someone (with the car out of gear, and the handbrake on) to turn
the ign. switch to the Start position. Does the lamp light? If
so push the blade back on, and try starting again. If 12V isn't getting
to the starter blade in the Start position it isn't going to crank.
It may be the battery is totally flat, or knackered, so remove it,
put it on the charger until all cells gas freely. Don't use a naked
flame to check, you get sprayed with acid if the battery explodes.
Any anti-theft circuits involved?
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  #3  
Old 05-27-2006, 04:59 AM
Andy Andy is offline
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Join Date: Apr 2004
Posts: 10
Default Punto Mk1 Weird Electrics

Thank you for your advice. Amazingly all it must have been that the Battery
was so flat it caused these weird goings on - yes I would expect the engine
not to turn over with a flat battery but as for all this weird goings on
with the instrument gauge and warning lights on the dash is very strange!

Anyway I gave the battery a good overnight charge and fitted it back on and
all seems to be working as it should.

Thanks again, I was beginning to think it was going to be a weird electrical
or ECU fault instead of just a flat battery!

----------------------------------------------------------------------------------------------------------------------------------------------



<ato_zee@hotmail.com> wrote in message
news:A_ydnaMhUdsq0erZRVnysA@pipex.net...
Quote:
On 26-May-2006, "Andy" <andy@indigo.ie> wrote:
Quote:
So I decided to hook up the jump leads to my other car and I ran the car for a while then went into the punto turned the key but no red lights came on the dash at all but the Speedo shot up to 40mph for some reason and the fuel gauge moved but no click or a sound from the engine, it wont even try to turn over.
You need a lead with a 12V low wattage bulb on the end to trace voltages, or a test screwdriver with a flying lead and clip, the clip you clip onto a good earthing point, engine block or chassis. Start across the battery, then pull the small push on connector on the starter, poke the screwdriver tip in to make contact, and get someone (with the car out of gear, and the handbrake on) to turn the ign. switch to the Start position. Does the lamp light? If so push the blade back on, and try starting again. If 12V isn't getting to the starter blade in the Start position it isn't going to crank. It may be the battery is totally flat, or knackered, so remove it, put it on the charger until all cells gas freely. Don't use a naked flame to check, you get sprayed with acid if the battery explodes. Any anti-theft circuits involved?




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  #4  
Old 05-30-2006, 02:17 AM
David Farrant David Farrant is offline
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Join Date: May 2006
Posts: 4
Default Punto Mk1 Weird Electrics


On 27-May-2006, "Andy" <andy@indigo.ie> wrote:
Quote:
Thank you for your advice. Amazingly all it must have been that the Battery was so flat it caused these weird goings on - yes I would expect the engine not to turn over with a flat battery but as for all this weird goings on with the instrument gauge and warning lights on the dash is very strange! Anyway I gave the battery a good overnight charge and fitted it back on and all seems to be working as it should. Thanks again, I was beginning to think it was going to be a weird electrical or ECU fault instead of just a flat battery!


You can also get odd faults with high resistance between the battery and the
battery leads, or a bad earth somewhere. It just means cleaning all joints
until you find the bad ones! Sometimes a high current will make them get
hot, especially while trying to start the engine. I had a dodgy connection
in that big plug on the ecu with mine and it took ages to find, as it was
intermitent and nearly drove me nuts. Italian electrics? Getting better but
still a favourite area for problems.

David.
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  #5  
Old 06-20-2009, 05:41 AM
Brummakmugkip Brummakmugkip is offline
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Old 07-01-2009, 05:22 AM
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Old 07-01-2009, 07:19 PM
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