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850 dash warning lights Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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misha
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Year and Model: '97 850 2.5 20v
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Re: 850 dash warning lights

Post by misha »

I'm not sure....but i think that there you should have battery voltage.
However....you don't have output from the alternator.Replacement should give you a proper 13.8-14.2v at idle.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
Chuck W
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Re: 850 dash warning lights

Post by Chuck W »

crlande wrote: Tue Feb 04, 2020 1:12 pm Hey misha! I measured 7.5 volts on the thin wire with key pos II. Not sure if that means anything. FCEuro alternator is being shipped here.
Thanks again.
Carl
Since you said that you didn't have a "Battery" light on, did you try grounding that this wire? Doing so should cause the battery(and other lights I mentioned in my post) to light. That would rule out any issues with that exciter circuit wiring.
'97 854 T5 - Manual Swap, M4.4,COP, P2R Brakes, 16T, chassis bracing, XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/exhaust/302s/Flashable M4.4, chassis bracing, 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.
crlande
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Year and Model: 240DL;850;S70
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Re: 850 dash warning lights  Topic is solved

Post by crlande »

OK everyone! I big thank you to misha with the knowledge and advice. After a few hours a day, after work, after brain clearing jogs, and in two days of rain, I have replaced alternator and fired her up today. No flickering dash lights. Consider this a fix! Hot damn! Thanks again misha! Nice directional guidance.
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misha
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Year and Model: '97 850 2.5 20v
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Re: 850 dash warning lights

Post by misha »

I'm glad that you solved the problem. ;)
Do you have proper voltage readings now on both....alternator and battery terminals?
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
crlande
Posts: 323
Joined: Sat Jul 27, 2013 8:48 pm
Year and Model: 240DL;850;S70
Location: Lehigh Valley, PA
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Re: 850 dash warning lights

Post by crlande »

Was too happy to check but I will go out and check right now for you! And yes it is raining again.
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misha
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Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
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Re: 850 dash warning lights

Post by misha »

Don't bother!
Whenever you have time.
I just wanted to check that problem is gone.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
crlande
Posts: 323
Joined: Sat Jul 27, 2013 8:48 pm
Year and Model: 240DL;850;S70
Location: Lehigh Valley, PA
Has thanked: 1 time
Been thanked: 26 times

Re: 850 dash warning lights

Post by crlande »

Yes they look good at both!! And I don't mind the rain, love to play soccer in it. Feels better on the knees!!
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misha
Posts: 4570
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 66 times
Been thanked: 176 times

Re: 850 dash warning lights

Post by misha »

Problem solved!
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
crlande
Posts: 323
Joined: Sat Jul 27, 2013 8:48 pm
Year and Model: 240DL;850;S70
Location: Lehigh Valley, PA
Has thanked: 1 time
Been thanked: 26 times

Re: 850 dash warning lights

Post by crlande »

Did not even need to swap the pulley as FCP recommended. Their special tool ( $7 CTA 8089 socket) would not have worked anyway. I grabbed a free loaner pulley tool kit from local Autozone but did not need to use that either as the FCP reman Bosch alternator had the same size pulley on it as my original alternator.
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