Alternator Stopped Working (2001 VW Golf 2.0L)
My friend has a 2001 VW Golf 2.0L that stopped charging. Battery voltage was 11.5 volts unloaded, and with the engine running stayed at the same voltage. I figure he could have a bad ground, bad fuse, bad relay, or bad alternator.
I charged him up enough to get the car to a European mechanic, who wants to charge $340 just for the alternator. The mechanic also said it needed to be replaced without doing any diagnostic at all except for what I had already done. I found a black wire going to the alternator and measured resistance to ground, and found it open. Should the wires circled in the picture below show continuity to ground? http://i7.photobucket.com/albums/y26...m/KIMG0179.jpg My friend doesn't have much money, and I don't like the "replace parts until it starts working" philosophy of repair work. If you know what I can check, and where to look, that would be great. |
The smaller wire is the field excitation signal from the engine computer. The larger wire goes to the positive terminal of the battery. Neither wire should show a connection to ground.
My question is: Where is the serpentine belt? |
Yeah, where's the belt?
Also that little wire looks pulled tight to me... if there is a fault with it, I'd suspect a break in the wire right at the connector where it is pulled into a hard bend. Oh, and friends don't let friends have newer VWs... AND THE $340 ALTERNATOR IS THE REASON WHY. |
Thanks guys. I'll see if I can keep my friend from the poor house...
The belt is on the alternator, it just has the ribs out. |
Is the belt flipped? Maybe it has no traction and nothing is spinning properly.
|
Some serpentines ride pulleys on both sides.
regards Mech |
All the alternators I have ever seen had the serpentine ribs contacting the pulley surface. The above picture is not showing that.
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Now I'm confused...
Looking at pictures from a Google search, it appears the belt is ribbed on both sides. http://www.iloveme.net/otherpics/tensionerbefore.jpg http://img.photobucket.com/albums/v3...y/DSC09222.jpg http://upload.generationdub.com/images/DIYserp06.jpg http://quirk-images.com/ebay01/vw2/06A-260-849-C-x.jpg |
EDIT: Posted at about the same time as redpoint did... hadn't ever seen a belt ribbed on both sides before... cool!
Was also trying to find a pic of the routing, and this is what I found: http://i340.photobucket.com/albums/o...project_88.jpg No AC on that one though... From DIY: Serpentine Belt Replacement 2.0 / 1.8T (MKIV) |
Update:
My friend found a re-manufactured alternator for $130 and the absurdly expensive European automotive shop charged $100 to put it in. $230 out the door... and I warned him about buying a VW. At least he is saving a ton of money in gas now that he's out of his Ford Exploder. |
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