M27 ignition fuse keeps blowing
11-23-2016 | 02:32 PM
#11
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Joined: Mar 2008
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Likes: 78
From: HB, So Cal
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DavidBennett (07-14-2021)
04-01-2021 | 10:25 AM
#12
JK Newbie
Joined: Apr 2021
Posts: 2
Likes: 2
From: Chicago
The same problem
So this last friday, my jeep started up fine 3 times and the third time was a trip into town, about 10 miles. I parked, go into the store and about 50 minutes later the Jeep wouldn't start.
Turns out the ignition switch/window module fuse keeps blowing. It seems i can get one good start and drive and then i have to replace it again.
Maintenance/etc leading to this event:
- jeep sat for about 8-9 days
- the next day it ran 100% all around for errands
- then I installed 1 ton steering, a stabilizer and drag link short inner end.
- adjusted alignment and steering
- the next morning I installed the doors after a few months and washed it (it was on and off 3 times then)
- then test drove into town for steering n such
- then fuse M27 was blown.
And it keeps blowing, but I cant find any diagrams for all the wiring involved in this fuse/system or where i can troubleshoot grounds and such.
Turns out the ignition switch/window module fuse keeps blowing. It seems i can get one good start and drive and then i have to replace it again.
Maintenance/etc leading to this event:
- jeep sat for about 8-9 days
- the next day it ran 100% all around for errands
- then I installed 1 ton steering, a stabilizer and drag link short inner end.
- adjusted alignment and steering
- the next morning I installed the doors after a few months and washed it (it was on and off 3 times then)
- then test drove into town for steering n such
- then fuse M27 was blown.
And it keeps blowing, but I cant find any diagrams for all the wiring involved in this fuse/system or where i can troubleshoot grounds and such.
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DavidBennett (07-14-2021)
04-01-2021 | 08:02 PM
#13
Thread Starter
JK Newbie
Joined: Aug 2015
Posts: 44
Likes: 4
From: Yuma, AZ
HI, did you ever find out what was the problem? I have the same problem, my M27 is constantly blowing. I replaced and as soon as I turn just a contact so not crank yet it blows, it gets spark there and I need to replace it again. After blowing few of them it starts working again. But I have to figure out what makes this problem. My Jeep is JK 2010.
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DavidBennett (07-14-2021)
04-01-2021 | 08:54 PM
#14
JK Newbie
Joined: Apr 2021
Posts: 2
Likes: 2
From: Chicago
For me, it was my ignition wire grounding out. During the maintenance I was doing I had removed my amp and sub. The tape wasn’t covering the ignition wire well enough and it eventually wiggled over to a seat bolt and grounded out. Have you had anything wired to your ignition source?
Thank you.
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DavidBennett (07-14-2021)
06-16-2021 | 12:00 AM
#15
JK Newbie
Joined: Jun 2021
Posts: 1
Likes: 0
From: Charlotte, NC
Same Issue
For me, it was my ignition wire grounding out. During the maintenance I was doing I had removed my amp and sub. The tape wasn’t covering the ignition wire well enough and it eventually wiggled over to a seat bolt and grounded out. Have you had anything wired to your ignition source?
