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hi there new to all this have a 94 lantra estate thats having charging dificulties the car has just started to die completly .had a second hand engine fitted by hyundai worked for a whille then started to run into trouble was told that the battery had had it so had a new one fitted the alternator was checked and wasnt charging at its full potental so replaced that with a brand new one but still having problems the new alternator is doing the exact same thing and only charging the battery intermitently .thinking that the problem lies somewhere else have you any surgestions as to where the fault could lie thanking you in advance

welcome to the forum :00000732:

if you have just had a new engine fitted one thing springs to mind. have all the earthing leads been fitted back? there should be a earth lead from the chassis to the engine is it making good contact?

one earth lead hadnt been replaced properly on the engine block noticed it last night when it started arcing iv tightened it back up but still haveing same problem wondering if this could have caused damage to the new alternator that id just fitted going to replace alternator again tommorrow if this problem still occurs after fitting is there any other things it could be iv tested the wire on the positive side of the battery to see if there is any current been drained whille the engine is not running and there isnt a current running through so i dont think it could be drained from a short etc . i tested the output of the alternator and is only charging when the engine is cold but cuts off 2 mins after the engine has started any other thoughts thanks

get the alternator checked out and/or replaced first then report back if you've still got a problem

:57:
will do cheers for the help let you know out come keeping fingers crossed :cigareta:
intresting site by the way keep up the good work :clap: :clap:

:banana: :banana: :banana: :banana: :banana: :banana: :banana: :D
reporting back : alternator replaced problem seems to have been solved !!!!
looks like the stray earth wire was affecting the first alt and blew the second . engine seems to be running better than ever proberly due to the new battery
thanks for taking the time to read my question ,had fun reading other peoples questions as im new to the hyundai engine used to working on fords so found it very informative :thumbsup: if i occur any other problems this will be the first port of call :beer: cheers !

This post has been edited by caldom: Jan 16 2006, 10:13 AM

Hi guys, i'm a newbie in need of some help, my wife has a 1.6gls Lantra '95 It still has an intermediate charging prob after 10 months, i have to charge the battery every night otherwise if she drives it next day it will die. I've had 3 alternators and 2 batteries so far and the symptoms persist, as above, it charges when cold (14.5volt) but 5mins later the charge rate dropes to 12.5volt and stays there, sometimes it drops to 10volt. One thing that does puzzle me is, when ever the car dies due to a flat battery there is no warning from the battery charge light on the dash, it only seems to illuminate when ignition is switched on with a fully charged battery, does this have any bearing on my prop, i've had the dash apart and all bulbs/connectors are ok, my work shop manual says its impperative that all HT leads are positioned correctly otherwise electrical probs can occur, is this right 'cause mine all lay over each other! Thanks in advance.

firstly the h.t. leads would have nothing to do with your problem, have you tried dis-connecting the battery of an evening and then re-connecting again in the morning? it could be that something is draining the battery when it left idle

Cheers Montego, i've tried that in the past and no good, do you know how many earth straps there are? Sorry to be a pain but my next question is, on our Lantra there is a small black box adj to the power steering resevoir/screen wash resevoir with a multi plug, what is this please? Rgds, Phil.