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Discussion Starter #1
Hi
I'll try and be concise about the problem as it's turning into a long story.
*New starter motor about a year back.
*New battery about 6 months ago.
*For past 3 or 4 months have problem starting if car not driven for couple of days
*Assumed drain due to device but measured amp draw when switched off is 0.04A which I think is low/ok.
*If battery is unplugged takes 3 days to drop from 13.23V to 12.92V (0.31v drop) (and starts ok)
*If battery plugged in then takes 2.5 days to drop from 13v to 12.74V (0.26v drop)
*Have unplugged alternator and left for several days, voltage drop the same.
*Will start from jump start every time.
*Will always start if been driven in previous 24hours.

A friend has suggested it may be a starter motor fault where the motor requires higher than normal voltage to start. Has anyone else had similar problems ?

Any help with this much appreciated as the problem is starting to drive me nuts.

Thanks

Dave
 

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It could be a starter problem, but your description tends to indicate that the starter is turning ok once it gets the juice. Hyundais tend to have problems with the connections of the battery cables. Here's a TSB describing how to test it.
 

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