Mud-club
		Vehicle & Technical => Defender => Topic started by: westy 90 on April 08, 2010, 20:07:42
		
			
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				after starting the engine on my 300tdi defender the battery light comes on very faint. Give it a little rev and it goes out. Any ideas ? i think it mite be the alternater.  
			
 
			
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				Usually its the alternator, if you've been offroading the brushes can stick a little, if its a lucas type you can take the plate off the back of the alternator in situ, 3 screws hold it on, you may have to thin the wall on a socket to get them out as they sit in small counterbores, 7mm I think
			
 
			
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				alternator
check out put it may work a bit but o/p will be down
i just changed a friends for this reason
its was 12.5-13 now up to 14v again
			 
			
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				maybe check the engine idle speed is correct first before fingering alternator ?
			
 
			
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				Maybe even check the belt tension before you spend money??  :doh:
			
 
			
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I had the same, then finally the tensioner gave up and the temp guage flew up!  Just caught it all in time though!
			 
			
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Maybe even check the belt tension before you spend money??  :doh:
was gonna say that but with 300tdi if there is a tension problem with serpentine belt then alternator light is least of worries, lack of steering and overheating too.
Saying that... if the belt is in poor nick or contaminated... :-k