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Volvo 740 turbo 1990, cross-cable jump start

Tiny
PINKFLAMINGO4279
  • MEMBER
  • 1990 VOLVO 740
We tried to jump start our Volvo but had the cables crossed positive to negative. What part is most likely to fail because of this? We suspect that it may be related to the relay part number 899931. Please let us know where to look for the problem.



When we try to start the car there is no response what so ever. Nothing happens, no noise and no lights or anything.
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Saturday, December 30th, 2006 AT 4:40 PM

2 Replies

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
You really could provide more information, like what the car is doing as you try to start it, etc.
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Saturday, December 30th, 2006 AT 9:53 PM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
The pcm can be blown by crossing the cables. Follow up with Bruce's request to help nail it down instead of a magic bullet.
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Saturday, December 30th, 2006 AT 10:21 PM

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