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Unread 04-09-2010, 02:12 PM   #1
disarm6565
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No Power

Drove to work on Thursday, got back to the Jeep after work and it has no power. I tried to pop start it, nothing. I tried to jump it, nothing. I replaced the battery and terminal cables, nothing. All fuses look fine. Starter/solenoid about a year old. Oh and by no power I don't mean it won't start, I mean there is absolutely no power anywhere.

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Unread 04-09-2010, 02:16 PM   #2
Louie4
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When you turn the key do the dash lights come on at all? Do you hear any relays clicking?
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Unread 04-09-2010, 02:18 PM   #3
disarm6565
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I hear clicks of relays but no starter clicks and no lights. Not even the light under the hood works.
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Unread 04-09-2010, 02:30 PM   #4
Louie4
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Do you have a voltmeter? Have you gotten the starter tested? No lights at all in the dash when you first turn the key? Do you hear the fuel pump prime?
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Unread 04-09-2010, 02:54 PM   #5
disarm6565
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Fuel pump not priming, I have a volt meter but don't really know where to start with it. I haven't had the starter tested yet but its not clicking so it's probably not broken. and yes no lights in the dash either. no power anywhere.
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Unread 04-09-2010, 03:02 PM   #6
Louie4
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I wanted to confirm the no dash lights because that tells me its the ignition switch. My old '86 Civic did the same thing. I finally traced it back to the ignition switch. I took it apart and cleaned the contacts put some grease on it and it worked fine.
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Unread 04-09-2010, 03:04 PM   #7
disarm6565
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Wouldn't the light under my hood be working if it was the ignition switch, or my headlights/hazards/brakes?
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Unread 04-09-2010, 03:09 PM   #8
Louie4
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Quote:
Originally Posted by disarm6565 View Post
Wouldn't the light under my hood be working if it was the ignition switch, or my headlights/hazards/brakes?
Yep they should. Strike the ignition switch. Take the voltmeter and start seeing what's getting power and what isn't. Have you tried to jump start it? If you touch the battery terminal wires are they hot?
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Unread 04-09-2010, 03:12 PM   #9
disarm6565
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That was the point of the post, I don't know where to start. Should I be checking continuity or voltage? Could it be a fusable link? I can take things apart and put them back together but I'm a complete amateur when it comes to electrical matters, at least anything other than running wire and soldering.
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Unread 04-09-2010, 03:37 PM   #10
Louie4
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If it was me I would check voltage at the battery (12-13 volts), then go to the fuse panel under hood, then check all fuses for continuity, then I would check all fuses under the dash. I would also check power to the starter. Of course you would want to check all this with the key in the "ON" position. Once you start confirming what has power and what doesn't you can narrow your wire tracing. Just takes time and patience which I sometimes lack the latter.
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Unread 04-09-2010, 03:40 PM   #11
slopoke36
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I agree with louie that you should clean your ignition switch first, then check your starter and make sure that is pulling the needed power and the cables are still connected correctly.

Sadly, if that doesn't work you are going to have to test all the switches and circuits under load, with your headlight switch in the on position. Start with hood light using your mutimeter and go from there.

I would approach the situation like this:
Check fuses (already did)
Battery connection (already did)
Ignition switch
starter connection
trace wires using mutimeter

I hate electric problems, good luck
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Unread 04-10-2010, 08:55 AM   #12
disarm6565
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am i checking voltage or continuity? Also, could it be the ecu?
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Last edited by disarm6565; 04-10-2010 at 09:09 AM..
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Unread 04-10-2010, 09:00 AM   #13
Roadyy
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Check voltage. Put the black wire from meter to ground on jeep then put the red lead to the connection on each item being tested for power. Make a list of each thing you tested with the voltage found at each item. This will give you reference to go by if you find power on each or not.
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Unread 04-10-2010, 10:42 AM   #14
River Ryder
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sounds like your ground is off, loose, or has a poor conection, very simple. Follow the negative lead off the batery to the engine and check that it is not broken loose, or corroded. also check the ground to the body off the batery in the same manner.

Chances are thats your problem. Hope this helps
Keith
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Unread 04-10-2010, 11:03 AM   #15
disarm6565
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@ River Ryder.

My first reaction to it was that it was a bad ground. Several years ago I used to have to adjust the ground cable during rain storms to get power for some strange reason. Anyway I replaced the large ground cable to the engine block but not the one going to the body. Perhaps that is the culprit.
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