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 Posted: Wed Feb 13, 2013 8:39 am |
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Joined: Mar 14, 2010
Posts: 713
Trade Rating: +2
Location: Suffolk
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Basically I've just got myself a Gti, the battery went dead the first night I had it but tbh I think that was something the seller wasn't telling me about the battery.
I replaced it with the one that was in my old 1.1L which has a start up power of 400A, is that enough for a 2.0L engine like in the Gti? It just sounds like the battery is struggling to turn the engine over. I does it, but only just!
Thanks 
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| "Being second is to be the first of the ones who lose. " Ayrton Senna | |
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Posted: Wed Feb 13, 2013 8:42 am |
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Joined: Mar 14, 2010
Posts: 713
Trade Rating: +2
Location: Suffolk
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The battery it drained had only got down to 12.40V but all I heard was a click from the engine bay when trying to start it. The one I replaced it with is at 12.60V and as I said before, just about does it.
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| "Being second is to be the first of the ones who lose. " Ayrton Senna | |
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Posted: Wed Feb 13, 2013 1:14 pm |
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Joined: Feb 10, 2010
Posts: 4266
Trade Rating: +4
Location: Palestine
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well you need a 60AmH battery to start a 2.0 Liter engine,so how much the one you had from the 1.1 is?
but i guess your problem is in the starter motor,not the battery.
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Posted: Wed Feb 13, 2013 1:55 pm |
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Joined: Apr 14, 2010
Posts: 713
Trade Rating: +2
Location: Gothenburg, Sweden
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| Ben.M wrote: |
| The battery it drained had only got down to 12.40V but all I heard was a click from the engine bay when trying to start it. The one I replaced it with is at 12.60V and as I said before, just about does it. |
One common mode of failure for batteries (lead-acid) are that the voltage can seem fairly OK when not stressed, but when you try to draw a big current from them (as when that solenoid on the starter clicks shut) the voltage collapses and the starter won't turn.
A battery in this state (or on the way to it)often also has a large self discharge rate. Ie it might work fine if the car is a daily driver that sees reasonable distances, but if you leave it a couple of days it might not be enough left to start the car.
The smaller battery from a 1.1 (probably 44/45 Ah) might be enough, at least for a while, if the charging system of the car is otherwise OK, the car doesn't do short journeys, and the car normally starts quickly - but the endurance if the car is hard to start is less, especially in cold weather; in short, slimmer margins... I'd go for a new properly sized one.
BTW, how old is the battery from the 1.1?
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| Silvermetallic 2004 206 RC | |
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Posted: Wed Feb 13, 2013 3:23 pm |
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Joined: Feb 07, 2010
Posts: 2505
Trade Rating: +19
Location: West mids
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Gotta agree with timon, sounds like it could be the starter if you have fitted a different battery it rules the battery out as it should still start, I started mine with a sit on lawn mower battery before.
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Posted: Wed Feb 13, 2013 4:27 pm |
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Joined: Mar 14, 2010
Posts: 713
Trade Rating: +2
Location: Suffolk
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| Timon2210 wrote: |
well you need a 60AmH battery to start a 2.0 Liter engine,so how much the one you had from the 1.1 is?
but i guess your problem is in the starter motor,not the battery. |
Just looked it up and the 1.1L's battery is 40AmH, only a year old I think.
Ok, I had no idea that could happen mtempsch, I'm really hoping its the battery that's the problem but I'll update this post in the morning regarding weather it starts or not :/
Thanks for your help guys!
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| "Being second is to be the first of the ones who lose. " Ayrton Senna | |
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Posted: Thu Feb 14, 2013 10:22 am |
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Joined: Mar 14, 2010
Posts: 713
Trade Rating: +2
Location: Suffolk
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Meant to write this earlier but was busy. Anyway, the car started this morning so I think it must have been the other battery. If I have this happen again I'll update this post again,
Thanks 
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| "Being second is to be the first of the ones who lose. " Ayrton Senna | |
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Posted: Thu Feb 14, 2013 1:22 pm |
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Joined: Feb 10, 2010
Posts: 4266
Trade Rating: +4
Location: Palestine
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well glad it started,keep us posted
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