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Regulated Voltage is High - Anyone Fixed This? 850

I noticed some odd behaviour of the console lights (randomly going on and off) and even my cell phone speakerphone stopped working. Turn lights are blnking much faster than usual.
I checked voltage in the lighter socket, it is 14.5V when I start the engine, but in 10 seconds goes to 17.2V. It stays at 17.2V regardless of the load, so it looks like it is regulated, but high.
The battery is old, but working fine.
Did anyone saw this? Is this s bad alternator of some ground connections? Any idea?
Thank you.








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Regulated Voltage is High - Anyone Fixed This? 850

I want to conclude this thread, so it will be useful for somebody in the future. Thank you to all of you who replied and helped.

Simptoms of overvoltage:

-Bright lights
-ABS, Tracks lights are ON all the time
-Engine knocking white accelerating
-SRS lamp goes ON and OFF
-Other odd things - flashing lights on the dashboard, fast turn lights blinking, fast wipers, etc.

Damage, if left untreated:

-Boiled battery (mine boiled and died, lots of steam, sulfur stench, tow truck home)
-Burned headlight
-Failed cell phone hands-free kit

Fix:

Only voltage regulator needed to be replaced, the alrenator was good. Voltage regulator (Bosh, various part numbers, check for your car) is accessible without alternator removal. Disconnect ground wire at the battery, remove 3 small screws holding the plastic cover, remove 2 wires, (thick and thin) and take the cover off. It is held with 3 plastic clips, push them outward. You need a Philips screwdriver with a short handle (those stubby ones). Wiggle the cover out (the hardest part). Locate the regulator, it is held by 2 screws. Replace it with a new one, put everything together. Start the engine and measure voltage at the battery. It should be around 14V, slightly varying from the load and engine RPM.








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Regulated Voltage is High - Anyone Fixed This? 850

The regulator is probably shot. Its on the back of the alternator and it's replaceable. If you posted your email I would've sent you the file for repairing it.



Mike
'95 850T








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Regulated Voltage is High - Anyone Fixed This? 850

Mike,
Thanks a lot. Please use groups@fedka.com
I lost my password and do not login properly.
I also think it must be a regulator, since the alternator outputs enough power for everyting (lights, seat heaters, etc.)
Yuri








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Regulated Voltage is High - Anyone Fixed This? 850

Ok, I sent you the file.


Mike







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