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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

crlande
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Joined: Sat Jul 27, 2013 8:48 pm
Year and Model: 240DL;850;S70
Location: Lehigh Valley, PA
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850 dash warning lights

Post by crlande »

Ok board members, I got one for you... Hopped in my 850 this morning and started off to work. Less than mile and all the warning lights and headlights start to flicker. Turn around and hop in another car. This afternoon the car fires up, the air pump sounded muffled compared to the usual wind up, all warning lights are on, occasional flicker but all on. I jiggled some cables under hood, fiddled with the key while in ignition, turned on accessories, windows, headlights with nothing different. Car idles fine and starts each time. Did not check the diagnostics boxes under hood yet. Where the heck do I start diagnosing?
Thanks,
Carl
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misha
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Year and Model: '97 850 2.5 20v
Location: Serbia
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Re: 850 dash warning lights

Post by misha »

Ignition switch or alternator.
'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
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Cookeh
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Year and Model: 1996 Volvo 850 T5
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Re: 850 dash warning lights

Post by Cookeh »

I'm with misha on this one, you can test the ignition barrel/switch by jiggling the keys slightly with engine running and seeing if that temporarily fixes the problem.
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
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Re: 850 dash warning lights

Post by crlande »

Yes I thought the same. Tried jiggling the key in ignition several times, no difference.
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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 »

Did you checked the alternator output voltage?
'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 »

I have not checked the voltage output yet.
Thanks for your idea/ information.
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 »

Two days of doing nothing to car, the battery was 12.2 with engine off. Started car and battery was 11.5 while engine running. I am leaning towards alternator issue.
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misha
Posts: 4577
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 »

Check voltage output directly on alternator....on b+ and alternator housing.
We need this to determine if alternator is bad or battery cables are bad.
'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 »

Today the battery was 12.2 before starting. The B+ and alternator housing was 11.45 as was the battery 11.45 while running.
User avatar
misha
Posts: 4577
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 67 times
Been thanked: 176 times

Re: 850 dash warning lights

Post by misha »

Yep....alternator is shot.
Could be voltage regulator or the alternator itself.
'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
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