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Old 18-12-11
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Unable to jump start 156

My wife had a baby so I've been driving her car for a few weeks instead of my 156.

The battery seemed to be flat so I've just tried to jump start it but it won't work.

I used a small Toyota for the charge, could that be the problem? Or is it likely to be something more sinister?

A few dash lights came on but there was nothing else at all.

Thanks in advance for any advice!
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Old 18-12-11
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Remove the battery and charge it (for at least 24hrs), if that fails replace the battery and ensure you have fuel in the car. Sounds basic but you have to start somewhere.
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Old 18-12-11
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+1 for biffa's advice........take it of and charge it first.......jump leads just boost the power slightly.....if ur battery is dead flat then it wont work

if u have not got a charger ask friends or buy one...they are worth it for times like this
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Old 18-12-11
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Brilliant, thanks gents.

Definitely got a full tank.

Will get on to borrowing a charger.
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Old 18-12-11
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If it's dead flat putting the leads on and leaving the car running for good while, (about long enough for a cup of tea!) should put some charge back into the dead battery. Do this before trying to start it.
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Old 18-12-11
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Never had issues jump starting a car with a dead battery

As said, go have a brew once its all connected up & donor car running and give the dead battery a chance to get 'juiced up'
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Old 18-12-11
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be really careful if you use a battery charger in the house, the cheaper chargers can ruin a good battery if left on for too long. I have to agree with everyone else, unless your jump leads have a lot of corroision on them it should be faily easy to jumpstart a car with just a flat battery
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Old 18-12-11
Grahameo
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Not on an Alfa JTD it isn't... Not recommended to jump start anyway, the power spikes involved aren't regulated and can fry your ECU.... But if you must try it, it must be a an engine and battery combination of greater amp/hr cranking capacity than your own... or you might as well pee against the wind.....
Example: your car is say 1.8 and 65 amp/hr, their car 2.0 and 75 amp/hr then you'll be fine, make sure that you jump charge for at least ten minutes before attempting starting... Even a healthy battery and alternator on the doner charge vehicle will take at least 4 minutes on tick over to replace the cranking amp charge they used just to start their own engine up!
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Old 02-01-12
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Originally Posted by Grahameo View Post
Not on an Alfa JTD it isn't... Not recommended to jump start anyway, the power spikes involved aren't regulated and can fry your ECU.... But if you must try it, it must be a an engine and battery combination of greater amp/hr cranking capacity than your own... or you might as well pee against the wind.....
Example: your car is say 1.8 and 65 amp/hr, their car 2.0 and 75 amp/hr then you'll be fine, make sure that you jump charge for at least ten minutes before attempting starting... Even a healthy battery and alternator on the doner charge vehicle will take at least 4 minutes on tick over to replace the cranking amp charge they used just to start their own engine up!
Good advice
My 2.4JTD was stored for around 2 months and when I returned to her even the central locking didn't work. I could not "jump" start it with my 1.5 alfasud sprint so I got my local indie to go to it.
They fitted a new battery (it had been new around 18 months ago) under warrenty and didn't even chagre me for the call out
I did a trip to see the in laws over in France which was a round trip of 1100 miles then she went back into storage (driving the sprint for the "summer")
When it was time to change over (around 3 months) again she was flat. I tried to jump start her from the sprint again (tried for 15mins at 3000 rpm) no chance.
It then dawned on me that my jtd probably required 60 + amps to turn the engine over and the sprint ledd than 20
Phoned the wife for her 1.9 jtd - started frist time

Thing is we have just spent new year at a holiday park - 3 nights and the battery is flat once agian
The AA man said the battery was good (but only had 5 volts charge) and started it first go with his booster pack. he checked for any "drain" but found nothing
Has any body else had a problem with leaving thier car for over 2 days?????????
Could it be the "famous" alfa electrics strike agian
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Old 02-01-12
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only jump start with surge protection leads or ya can cook both cars ecu ..................
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Old 03-01-12
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Originally Posted by davealfa11 View Post
only jump start with surge protection leads or ya can cook both cars ecu ..................

"can"........I've jumpstarted Alfas dozens of times, and jumped other cars off the Alfas, and never had any issues.....

Has anyone actually ever had a problem, or is this an urban myth, just repeated by internet knowledge? I'd agree that its best to follow manufacturer instructions, and connect pos to pos, and earth to earth - on the engine block rather than the battery.......
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Old 03-01-12
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It is certainly happens on some cars. Later Rover diesels (eg my old 25) have the ECU right next to the battery and its easy to brush against the case with the +ve from the donor car and fry the output stage. Whenever the weather was extra cold there always seemed to be someone posting their car was dead after an attempted jumpstart. Thats direct damage rather than a voltage surge though.........

Keith
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Old 03-01-12
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Originally Posted by rgwm View Post
"can"........I've jumpstarted Alfas dozens of times, and jumped other cars off the Alfas, and never had any issues.....

Has anyone actually ever had a problem, or is this an urban myth, just repeated by internet knowledge? I'd agree that its best to follow manufacturer instructions, and connect pos to pos, and earth to earth - on the engine block rather than the battery.......
It is not a myth and it happens more often than people think.
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