Login Register

1999 v70 NA battery drain

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

Post Reply
User avatar
abscate
MVS Moderator
Posts: 35272
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1497 times
Been thanked: 3810 times

Re: 1999 v70 NA battery drain

Post by abscate »

Adding a bit of knowledge to this one. College is uphill from her apartment so I suddenly realized that with the 1999 free wheel alternator pulley she wasn’t charging in the way home at all
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

User avatar
xanthefin
Posts: 444
Joined: 4 May 2019
Year and Model: 1997 850
Location: Pluto
Has thanked: 106 times
Been thanked: 130 times

Post by xanthefin »

I'll vote that battery charger too due so short driving.

User avatar
Eddystone
Posts: 564
Joined: 20 January 2014
Year and Model: 1967 Ford GT40 Mk IV
Location: Lorain, Ohio
Has thanked: 63 times
Been thanked: 81 times

Post by Eddystone »

I bought one of these and have found it to be both cheap and satisfactory. It also supplies some information about what it's actually doing.

Nexpeak 1.75-Amp Car Battery Charger on AMAZON. $17

I read through the thread and see that you bought a new battery. I just replaced the battery in my 940. It would charge up and show over 12.5 VDC, but that was misleading. The first time I drew any current from it (as in starting) it would drop down to about 10.5 VDC which I figure is a bad cell or at least a functionally bad cell. Since replacement, no issues.

Of course, you and I both know what our real issue is, and that's having too many cars. I now have three Volvos and a 1964 Corvair. We have two drivers and seldom have more than one car out of the driveway at any given time.

Also, compared to our 1999 Volvos, even the oddball Corvair is easier to figure out and cheaper to buy parts for. It also has the advantage of not having a liquid cooling system which I have seen much more of in my Volvos than I care to lately.
1998 V70 Non-Turbo/Auto The Perfect Driving Appliance
1993 945 Turbo/Auto Pickemup Truck that Will Not Die. New 960 seats!
1999 S70 T5 Turbo/Auto which is better than Abscate's T5
All U.S. market models.
All running and on the road.
PM me if you are in Ohio. I'm in Lorain.

User avatar
abscate
MVS Moderator
Posts: 35272
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1497 times
Been thanked: 3810 times

Post by abscate »

I Forgot to close loop on solution. We put a 5 amp trickle charger permanently installed on it and it’s been fine since

She plugs in on weekends, and on Wednesday in cold weather, too.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

Post Reply
  • Similar Topics
    Replies
    Views
    Last post