Is it the alternator or VR? - Saab General Bulletin Board - Saabnet.com
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Alternators rarely go bad. An alternator is just a hunk of spinning wire, inside another hunk of non-spinning wire. About all that can go bad is the bearings.
I assume the problem is an Alternator (or BAT) light. This could be due to a bad diode inside the alternator - if so, replacing the alternator is a solution. However, the most likely problem is the voltage regulator, more specifically, the brushes mounted on it. These wear down. I would replace the VR first. Easy and cheap.
Remove the negative lead to the battery, for safety. The VR is the diamond-shaped device on the back of the alternator - very easy to access. remove the two screws, and pop the VR out. Pop in a new one (about $50 from a decent autoparts store).
Again, I'm assuming you've got a BAT light, and if you stick a voltmeter on the battery when the car is running, you see less than 12.5 volts. If not, please post the symptoms.
posted by 192.249....
Posts in this Thread:
- saab 900 alternator, Bernie
, Mon, 19 Jul 2004 11:53:03- As Vlad said-, Dick in Falls Church, Mon, 19 Jul 2004 17:39:44
- Check the ground strap before replacing alternator (-), Vlad, Mon, 19 Jul 2004 12:52:02
- Should post on C900 board >, ChipJ, Mon, 19 Jul 2004 12:30:01
- Is it the alternator or VR?, Ari
, Mon, 19 Jul 2004 12:28:33 <-- Viewing This Message
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