defender-kris Posted August 8, 2010 Share Posted August 8, 2010 my alternator has stopped working when the car is running it shows up on the meter at 12.1 what can i do. Would a disco 200tdi one fit my defender 200tdi or what about getting it reconditioned and what is the going price for this ??? Quote Link to comment Share on other sites More sharing options...
Gromit Posted August 9, 2010 Share Posted August 9, 2010 you can recon it yourself for very little money, and it's pretty easy. see here Quote Link to comment Share on other sites More sharing options...
Adam001 Posted August 9, 2010 Share Posted August 9, 2010 Is the alternator light on? (no charge light) Quote Link to comment Share on other sites More sharing options...
defender-kris Posted August 9, 2010 Author Share Posted August 9, 2010 no the lights is not coming on Quote Link to comment Share on other sites More sharing options...
Gromit Posted August 9, 2010 Share Posted August 9, 2010 no the lights is not coming on Is the bulb working? Have you checked the voltage at the alternator? Quote Link to comment Share on other sites More sharing options...
defender-kris Posted August 9, 2010 Author Share Posted August 9, 2010 no i have not could you please tell how would i do this and what it should be at ??? Quote Link to comment Share on other sites More sharing options...
errol209 Posted August 9, 2010 Share Posted August 9, 2010 no i have not could you please tell how would i do this and what it should be at ??? Do you have a multimeter? (other similar products here here and here, Ref: 287132) Quote Link to comment Share on other sites More sharing options...
defender-kris Posted August 9, 2010 Author Share Posted August 9, 2010 YEP GOT ONE Quote Link to comment Share on other sites More sharing options...
errol209 Posted August 9, 2010 Share Posted August 9, 2010 YEP GOT ONE Good. Set it to measure 15V DC. Feel down the back of the alternator and find either a squarish plug with a wire clip over it or a big terminal, both with two thick brown wires connecting to them (two different styles of alternator connection). If it's a plug, whip the clip and cover off but leave it plugged in. Start the engine and measure the voltage from the thick brown wires to the engine block - should be over 14V with the engine revving (careful, the alternator is connected to the battery - don't short anything and mind the pulleys/belts/fan) Also on the back of the alternator there should be a thinner brown/black wire. Check the voltage of this wire to the block too. This should be the same. Lastly take the warning light block out, take the charge warning bulb out and check the resistance of the filament - should be "something". Let us know the answers. Quote Link to comment Share on other sites More sharing options...
defender-kris Posted August 9, 2010 Author Share Posted August 9, 2010 HI errol209 I got 12.1 on one of them & 12.4 on the other Quote Link to comment Share on other sites More sharing options...
Gromit Posted August 10, 2010 Share Posted August 10, 2010 HI errol209 I got 12.1 on one of them & 12.4 on the other If this was while revving the engine, then the alternator is not charging. Take it out and get it recon'd, either yourself or by an auto electrician. Quote Link to comment Share on other sites More sharing options...
errol209 Posted August 10, 2010 Share Posted August 10, 2010 If this was while revving the engine, then the alternator is not charging. Take it out and get it recon'd, either yourself or by an auto electrician. ^^^^ Wot Gromit sed. The regulator / rectifier electronics are knacked. Gromit's Illustrated How To is here Quote Link to comment Share on other sites More sharing options...
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