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She's blowen a fuse and I don't know why.

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#141 ·
At this point, this is what I would do. Document it. Write down on a piece of paper every condition that you can recall when the fuse blew. Example: It was raining (how hard?). Were you driving through puddles of sufficient depth to cause a lot of splashing. Were you turning right or left at the time. Was it windy. The road was bumpy etc. be detailed, and put it in your glove compartment If it happens again, get out the paper and start eliminating things that did not repeat.
Also, just a thought. I was thinking whether or not going around with a spray bottle would do anything. I.E. If the coil is suspected of grounding out when wet, spray it down with water. Would localize it if the fuse blows (long shot!).
 
#142 ·
norcalfocus01 said:
Do you really think my battery is bad if I got 12 volts in it?
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Sorry I disagree with Socon when he told you No. Volts will tell you if you have a dead cell, also if the car has been running or you just took it off the charger it still has what they call a surface charge on it. You need to run the headlights blower motor for 30 seconds with the car off. This remove the surface charge, a 100% battery will show 12.4, for every 200mV decrease is a 25% decrease in battery life.

12.4V =100%
12.2V = 75%
12.0V = 50%
11.8V = 25%

But really the best way is to test CCA (Cold Cranking Amps) But you need overpriced gizmoraters, and thingamejigggers for that.
 
#143 ·
norcalfocus01 said:
Relay out.




I loved using the butt joints with the heat shrink ends on them. But my local store doesn't have them anymore. I know tape not the best but I tape it up really good.

The day this happened it was raining [dunno] So its possible it got water somewhere. Hell it could have been my headlight plug coming undone.




[cheers] Thanks for everyones help.
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I dont think water is an issue at all. Water for automobiles corrodes wires and causes resistance. Example being a Dim headlight. You have a lack of resistance, I know your were thinking water conducts, and is conducting to ground. That would be near impossible. Honestly I think it would still have enough resistance to not blow the fuse. Take your ohm meter and put both leads in a cup of water I'm curious to actually know this....lol
 
#144 ·
matt49064 said:
hey i might be able to help my car did the same thing there is a ground wire next to the coil and for some reason it came out of the little clip it went in and as you driving it will arc against the coil and blow that fuse let me know if this helps
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Spray bottle test will show this.....Its how we find poor IGN wires or cracked insulation boots.

Only works on High voltage Ign parts tho. 12V system you will see no results, so dont go soaking down your fuse box lol....
 
#148 ·
wait so has it not happened anymore? I'm really not gonna look back through a bunch of diagnostic pages right now to find that answer.

stop chasing down a problem if it happened once.
 
#149 ·
S0C0nFused said:
I disagree with you disagreeing with me disagreeing with NorcalFocus01.

Please read the whole discussion. the question was, could a bad battery cause a fuse to blow, to which I answered "No". [wiggle]
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O I thought I read somewhere he had it tested and it was bad an such......I was skimming. My bad.
 
Discussion starter · #151 ·
Drove it 175 miles last Sunday. Never had a issue. This is even after putting the wires and all back together. The battery still starts the car without a struggle. So where does this leave me? I'm not spending $90 on a new battery when mine still works. Until the issue happens again (which it may never) I'm not going to waste my time running through miles of wire. I will say my tucked wire got smashed between the tranny and frame rail, but that has since been pulled out and un smashed.

So at this point, its back to finishing up my build plans.
 
#152 ·
Right! But, really. Write down everything you can remember about the conditions at the time and stick it somewhere you can find in later. IF it happens again, you can compare notes. I cannot stress how helpful this can eventually be with a (potentially) intermittent problem.
 
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