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94 850 Keep losing all electricity

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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skloon
Posts: 526
Joined: 17 June 2010
Year and Model: 94 850 95 850 04 S60
Location: Edmonton AB
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Re: 94 850 Keep losing all electricity

Post by skloon »

I lose the radio first then everything- even the hazard lights- it usually comes back in a couple of seconds- I tried it with the six month old battery out of my wifes car and no difference- I will make up some new cables after I get the steering rack into the wife's v70

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BEJinFbk
Posts: 4067
Joined: 5 January 2008
Year and Model: '98 V70 R
Location: Fairbanks, Alaska
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Post by BEJinFbk »

Was the ignition switch new or a JY replacement?
Are you monitoring voltage while driving?
Maybe a dying accessory overload relay?
( 105 and/or 106 ? )

I'm just trying to figure out if your system is losing
power gradually or dropping out all at once.

And before you start replacing cables,
run some voltage drop tests.
'98 V70 R - Well Equipped for Life Up North... ;)

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skloon
Posts: 526
Joined: 17 June 2010
Year and Model: 94 850 95 850 04 S60
Location: Edmonton AB
Been thanked: 2 times

Post by skloon »

Brand new Volvo part- in the bag- laying in my stash of parts for a couple of years but new

User avatar
BEJinFbk
Posts: 4067
Joined: 5 January 2008
Year and Model: '98 V70 R
Location: Fairbanks, Alaska
Has thanked: 93 times
Been thanked: 146 times

Post by BEJinFbk »

I missed the hazard lights...
That means constant power is dropping out.
I agree with checking all main cables, but again,
start with some metering before you begin tearing
things down. It may be an easier, cheaper fix.

And keeping an eye on your voltage levels is never
a bad idea when your having electrical problems.
You can tie in a DMM through the accessory connector
or just pick it up at the cig lighter with a plug.

These things are kinda handy, too:
http://www.ebay.com/itm/LED-Display-Cig ... Swc0FUnWHd

All shapes and sizes!
http://www.ebay.com/itm/4in1-3-1A-Dual- ... SwFMZWru~a
'98 V70 R - Well Equipped for Life Up North... ;)

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