Forums
New posts
Search forums
Image search
Shop
Amazon Store
T-Shirts
Stickers
Members
Current visitors
Supporting Member Upgrade
Calendar
Sponsors
About
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Image search
Search
Search titles only
By:
Search titles only
By:
Menu
Install the app
Install
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Jeep Wrangler JK
JK General Discussion
Running with no Battery?
Reply to thread
Message
<blockquote data-quote="Nic_dEntremont" data-source="post: 453585" data-attributes="member: 24390"><p>I've been dealing with an annoying electrical problem with my 2015 Wrangler Sahara. I have an original post about it here.</p><p></p><p><a href="https://wranglerjkforum.net/threads/hello-from-nova-scotia.30802/#post-453449" target="_blank">https://wranglerjkforum.net/threads/hello-from-nova-scotia.30802/#post-453449</a></p><p></p><p>Short story is that all the warning lights come on at random and the vehicle gets stuck in whatever gear you're on. You lose the tachometer, speedometer, fuel, tire pressure... So far I've been driving it by keeping the battery unplugged while it's parked. If I keep the battery plugged in, it starts but within a few minutes, the problems start.</p><p></p><p>I tried new battery terminals, charging the battery, replacing the battery, disassembling the fuse box. I thought I had a high IOD but I can't seem to measure any since I reinstalled the fuse box. I checked all the wiring harnesses and ground locations I could find.</p><p></p><p>Yesterday I took it for a drive and had it running for about a half hour with no issues. The night before I decided to keep the battery plugged in while it was parked for a few hours and although it started just fine, within a couple minutes of driving the problem started.</p><p></p><p>A work colleague who has experience working on cars said that the best way to test an alternator is to start a car and while it's running, unplug the battery... I tried that. It started, no warnings, I unplugged the negative terminal on the battery and right away all the lights and warnings I was seeing came on. I read up on Jeeps since then and found that they won't run properly off just an alternator but it sounds like they should run for at least a bit. Are my test results an indication of a bad alternator or is that no longer a valid test method on newer cars?</p></blockquote><p></p>
[QUOTE="Nic_dEntremont, post: 453585, member: 24390"] I've been dealing with an annoying electrical problem with my 2015 Wrangler Sahara. I have an original post about it here. [URL]https://wranglerjkforum.net/threads/hello-from-nova-scotia.30802/#post-453449[/URL] Short story is that all the warning lights come on at random and the vehicle gets stuck in whatever gear you're on. You lose the tachometer, speedometer, fuel, tire pressure... So far I've been driving it by keeping the battery unplugged while it's parked. If I keep the battery plugged in, it starts but within a few minutes, the problems start. I tried new battery terminals, charging the battery, replacing the battery, disassembling the fuse box. I thought I had a high IOD but I can't seem to measure any since I reinstalled the fuse box. I checked all the wiring harnesses and ground locations I could find. Yesterday I took it for a drive and had it running for about a half hour with no issues. The night before I decided to keep the battery plugged in while it was parked for a few hours and although it started just fine, within a couple minutes of driving the problem started. A work colleague who has experience working on cars said that the best way to test an alternator is to start a car and while it's running, unplug the battery... I tried that. It started, no warnings, I unplugged the negative terminal on the battery and right away all the lights and warnings I was seeing came on. I read up on Jeeps since then and found that they won't run properly off just an alternator but it sounds like they should run for at least a bit. Are my test results an indication of a bad alternator or is that no longer a valid test method on newer cars? [/QUOTE]
Verification
Post reply
Jeep Wrangler JK
JK General Discussion
Running with no Battery?
Top
Bottom