Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 9/2002 900 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Help with charging problem dignosis needed. 900

posted by  someone claiming to be carmist on  Tue Oct 5 17:57 CST 2004 [RELATED]

Battery won't hold a charge. Have to jump it to get it running.

With engine running at minimum load, I get 12.6 V across the + and - battery terminals (dips to around 9 when the radiator fan come on). At the same time, I get 13.6 V measured at the alternator - but it won't go above 13.9 even with the engine revving and with minimum load.

I can't find a problem with the wiring, so I am thinking (having read the entire section in the FAQ page) it's the alternator.

This evening I removed the voltage regulator to see if the brushes were worn out, but I am not sure how to tell for sure. How can I tell? Is there a good site that explains how to tell?

If the brushes are OK, should I replace the entire alternator? Based on the symptoms, would you agree that the alternator or regulator is the culprit? TIA

Regards,

Calvin (92 940GL 198K, 96 850 Turbo 97K)






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New Help with charging problem dignosis needed. [900]
posted by  someone claiming to be carmist  on Tue Oct 5 17:57 CST 2004 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.