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upgrade charging system?

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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BEJinFbk
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Re: upgrade charging system?

Post by BEJinFbk »

If you drive in a lot of salt,
definitely check ALL positive
cables, ground straps and
their connections.
'98 V70 R - Well Equipped for Life Up North... ;)
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Re: upgrade charging system?

Post by xHeart »

It is a Midwest car with extreme cold and salted road indeed. The cables are original 23+ years.
Mulling over buy or build?

Unless you say otherwise, I'll take cables off, clean and restore connectors, and reinstall.

Following device connected to lighter port was reading 13.3v during the 30-min test drive.
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misha
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Re: upgrade charging system?

Post by misha »

No cleaning is possible because they are burnt under insulation.
They must be replaced.
Cig.lighter output will allways show less than real.
Battery terminals should be used for checking.
'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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BEJinFbk
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Year and Model: '98 V70 R
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Re: upgrade charging system?

Post by BEJinFbk »

I have one of those for each rig.
They aren’t a DVM on the alt output,
but they give you a quick snap shot
of the voltage from the distribution block.
And ya need to charge stuff anyway... :mrgreen:

AFA the cabling, with heavy salt, there can
absolutely be a lot of nasty business going on
under the insulation. You can take a whack at
cleaning, but you may very well have to replace. :(
'98 V70 R - Well Equipped for Life Up North... ;)
xHeart
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Re: upgrade charging system?

Post by xHeart »

You're correct Misha, the reading at battery cable while idling is 13.5-13.6v, so yes, it is higher than the reading at the cig.lighter.

Unless otherwise, ordering this item https://www.fcpeuro.com/products/volvo- ... 70-9456836
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Past: German Shepherd | 1997 Volvo 854 | 1989 Volvo 740 GL | 1979 Volvo 240
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misha
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Re: upgrade charging system?

Post by misha »

That's what you need.
But you can build your own for about 10-15$...i guess.
'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
xHeart
Posts: 2850
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 2.0/2.4/3.2
Location: Great Lakes - USA
Has thanked: 29 times
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Re: upgrade charging system?

Post by xHeart »

Is this FcpEURO cable long enough?
There are 2 more connectors fastened on at the positive red battery connector, assuming one goes to starter.

FROM VIDA:`
Removing the existing cable terminals
Remove the splash guard over the starter motor connections.
Detach the connection at the starter motor/generator.
Cut off the cable terminals on the cable to be replaced. WHAT?
Insulate the ends of the cables with electrical insulation tape. WHAT?
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Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km
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abscate
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Re: upgrade charging system?

Post by abscate »

The positive battery cable on these cars is buried inside the main electrical loom so you can’t really remove th sold one without major surgery. You just leave it in, and it is considered good electrical practice to insulate the ends of dead, unused wires,

Route the new one along the bus, and secure with zip ties every 10-15 cm and when it bends
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Re: upgrade charging system?

Post by xHeart »

abscate wrote: Thu Dec 26, 2019 7:30 am That’s a big drop on the B+

Do you have an IR gauge you can check the temperature of the cable after 15 minutes running with all the lights on ?
While waiting on new cable, I do not have IR gauge but my multimeter can read temperature with the specialty probe. Where to place probe for temp read?
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Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km
Past: German Shepherd | 1997 Volvo 854 | 1989 Volvo 740 GL | 1979 Volvo 240
xHeart
Posts: 2850
Joined: Sat Dec 03, 2011 8:05 am
Year and Model: 2.0/2.4/3.2
Location: Great Lakes - USA
Has thanked: 29 times
Been thanked: 55 times

Re: upgrade charging system?

Post by xHeart »

It is known that VIDA DiCE doesn't read 1997 850 for diagnostic over OBD2, but the database matches VIN and provides Parts and Repairs under INFORMATION tab with useful instructions.
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Golden Retriever | 2014D VIDA DiCE | 2020 V60CC | 2013A XC90 +150mi/241km | 2001 V70XC +200mi/322km
Past: German Shepherd | 1997 Volvo 854 | 1989 Volvo 740 GL | 1979 Volvo 240
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