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RWD - Charging Mystery Continues: 1993 Volvo 940

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Charging Mystery Continues: 1993 Volvo 940 900

"After driving the car for about 20-25 minutes, while leaving the engine running, the voltage across the battery terminals reads about 12.3v. This indicates that it is not charging.(No lights or fan were on during the measurement.) Charging appears to be intermittent"

--> When its not charging get voltage measurement at the alt itself - between B+ post to its own body. If voltage is present then there could be conduction issue with your alt grounding wire (the blue wire from alt body to inlet manifold). The wire could still be conducting but has developed internal resistance high enough due to age thus not reaching ground (zero volt) level.

Which dashboard light lights up during ignition on? Does the one with batt icon lights up too?

Amarin.






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New Charging Mystery Continues: 1993 Volvo 940 [900]
posted by  onlyVolvo  on Mon May 13 23:04 CST 2019 >

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