20a Engine Fuse Blown - JeepForum.com
 
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post #1 of 5 Old 07-27-2017, 12:08 PM Thread Starter
Armeloth
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20a Engine Fuse Blown

So I was driving home last week and my ZJ just shut off randomly. I checked the fuses and the engine control fuse under the hood, the 20a, fuse was blown. I replaced the fuse and tried to crank it again, and the fuse blew immediately upon turning the key over.

I let it set for about 30 minutes, enough time to cool it off, and then I put another fuse in and it cranked up and I drove home.

I didnt drive it for a few days and when I finally drove it, i drove it for about 45 minutes and it did the same thing. I changed the fuse and it started back up, only to blow again ten minutes later. After it cooled down, I put another fuse in and drove it home.

Does anybody have a direction as to what might be causing this fuse to keep blowing?

Thanks

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post #2 of 5 Old 07-27-2017, 12:13 PM
wingless
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Location: Florida
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Something on that circuit is drawing too much current.

Has the current been measured?

Have the components been inspected? Has the wiring been inspected?

Which fuse / circuit?


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post #3 of 5 Old 07-27-2017, 03:06 PM
HighLonesome
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02 sensor wire shorting out somewhere can cause that.
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post #4 of 5 Old 07-27-2017, 05:49 PM Thread Starter
Armeloth
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I haven't checked current. And I haven't done much to try to diagnose it. I hate electronic stuff and I've been working a lot lately.

So an oxygen sensor? Anywhere else to look?
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post #5 of 5 Old 07-27-2017, 06:05 PM
wingless
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Quote:
Originally Posted by wingless View Post
Have the components been inspected? Has the wiring been inspected?

Which fuse / circuit?
Quote:
Originally Posted by Armeloth View Post
Anywhere else to look?
It is something wrong in the Jeep.


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electrical , fuse , shut off , zj

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