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Reversed jump start 1993 240 sedan

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

oilguzzlingmonkey
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Joined: Wed Aug 03, 2016 1:25 pm
Year and Model: 93' 240, 2-02' v70s
Location: Hampton, NH
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oilguzzlingmonkey

Reversed jump start 1993 240 sedan

Post by oilguzzlingmonkey » Wed Aug 03, 2016 1:37 pm

Hi all, new to the forum but have owned Volvos for years. My 18 yr old son recently acquired a 93 240 sedan for short money. We have replaced the fuel pump, replaced all the exterior lighting and tune up performed. His door locks are still drawing .4 amps with the car shut off so they are next. Unfortunately the battery died at a friends house and he incorrectly hooked up jumper cables. Now the car will not do anything even with the jumper cables hooked up correctly. I know he fried something but have no idea where to start looking for a problem. There is no battery 60 amp fuse so this must be an early 1993. All the fuses in the box check OK. Can anyone point us in the right direction? Which item is most likely to fry first upon reverse polarity?

Derbyrunner
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Joined: Wed Aug 17, 2016 6:26 am
Year and Model: 1998 S70
Location: Kentucky
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Derbyrunner

Re: Reversed jump start 1993 240 sedan

Post by Derbyrunner » Wed Aug 17, 2016 6:49 pm

My son done same thing on S70 and it's blowing the ignition fuse (15 amp). Hopefully someone can help out. I also changed the voltage regulator as advised on another forum.

Derbyrunner
Posts: 14
Joined: Wed Aug 17, 2016 6:26 am
Year and Model: 1998 S70
Location: Kentucky
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Derbyrunner

Re: Reversed jump start 1993 240 sedan

Post by Derbyrunner » Fri Aug 19, 2016 1:46 pm

I changed the relays in main fuse box that had a j on top of it and the main engine relay. It was a tedious task that left me with 4 empty boxes of fuses so I hope this helps you out.

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