Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

#6 Fuse Keeps Blowing car won't start 98 s70 Help

  #1  
Old 07-28-2018, 04:43 AM
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Default #6 Fuse Keeps Blowing car won't start 98 s70 Help

[SPOILER]Hi i recently had to take my 98 s70 in because the radiator was leaking and over heating I got the car back not even a week later I'm at the store and I go to start. My car and go home and the car won't start won't make any noise do anything at all. The lights and radio work fine so no battery issue and I tapped the starter thinking maybe that was the issue nope, I noticed my door auto lock button wasn't working I looked at the fuses under the hood and the #6 (25) fuse was light up indicated it was blown. Its the central locking; driving mode selector. I replaced it and as soon as I placed the fuse in the slot pop it blows again evey time I try to put a new one. The car won't start I'm sure its because of the fuse I just spent over a grand on the radiator and can't afford to have anymore done I'm wondering I'd there is hopefully a DIY method to getting my car running again. I really need some help its my only car and I have a two month old who's check up is coming up pretty soon and I need to be mobile. I would appreciate any insight into the issue. Thank you
 
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Old 07-28-2018, 07:42 AM
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Spending "a grand" on the radiator has nothing to do with your current issue. You have a dead short to ground somewhere. It is time to start checking over the wiring harness, etc. With these kind of problems, the source can be a bad switch, bad wiring, bad insulation, anything that would cause direct current to go to ground and pop the fuse.

I understand that these kind of issues are frustrating, but I don't see how it has anything to do with changing a radiator.
 
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Old 07-28-2018, 09:17 AM
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So of course you have a dead short to ground in that circuit. You can fix that for 1 penny, but the problem is finding it. You cannot afford to hire somebody else to find the problem. You will have to find it yourself.

So the DIY method you are looking for would be to look at the wiring diagram and trace the wires on that circuit to the various places it goes in power distribution. If the short is a wiring problem you would find that just by inspection. I will admit the wiring diagram is very complex, but that one circuit isn't. I will also admit that finding and seeing wires is difficult physically. They are mostly hidden behind and inside stuff.

I have a wiring diagram pdf for that car, but it seems like I don't see it any more on volvowiringdiagrams.com. Found it here: https://www.scribd.com/document/2878...vo-c70-s70-v70

Be warned the pages are scrambled a bit. My copy is like that too.
 

Last edited by firebirdparts; 07-28-2018 at 09:30 AM.
  #4  
Old 07-28-2018, 10:43 AM
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What system exactly is fuse #6 for? My son has our S70 right now so I cannot go out to the fuse panel and see what circuit/function it protects?
 
  #5  
Old 07-28-2018, 11:47 PM
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https://volvornt.harte-hanks.com/man..._102.htm#pg102

I don't see anything on fuse #6.
Stater relay is #17, so If you turn your key and you don't hear the starter cranking, I would check there first.

What is your location?
 
  #6  
Old 07-29-2018, 10:16 AM
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Ok, I asked my son to check the #6 fuse on our 1998 S70 T5, and according to the guide on the cover of the fuse panel, fuse #6 is supposed to be a 20 Amp fuse for the central locking system.
 
  #7  
Old 07-29-2018, 03:54 PM
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The wiring diagram shows that fuse 6 (by the way they number fuses) powers 6 little fuses. So if you are numbering fuses the same way the diagram does, then you could pull all those and divide the problem up very nicely.

There is with old cars always the possibility that this fuse was blown for years, but it's an awful big one for that.
 
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