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Unread 10-08-2012, 01:25 PM   #1
SilverSE06tj
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2006 TJ Wrangler 
 
Join Date: Oct 2012
Location: Cornelius, NC
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No Power. Battery,Altenator, and starter all good.

Desperate help for any trouble shooting tips. 2006 TJ (SE) wont crank. Put the key in ignition...nothing. Might beep for a second. I had the battery tested (purchased in August), the alternator, and the starter. They are all testing fine at Adv Auto Parts. I checked all the fuses. Could it be the ecm? 97k miles

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Unread 10-08-2012, 01:27 PM   #2
asim04LJ
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Are your terminals clean? Did you check the grounds?
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Unread 10-08-2012, 02:04 PM   #3
Jerry Bransford
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Do your headlights turn on? Are they at full brightness? If they are on at full brightness, what do they do when the key is turned to the Start position? Do they dim/go out or do they stay on at full brightness?
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Unread 10-08-2012, 06:27 PM   #4
bonechief121
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2005 TJ Wrangler 
 
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Mine was doing the exact same thing. I changed relays checked battery starter all cables. The weird thing was the rear window defogger witch would be the only thing to stay on. Ended up being the ignition fuse loose in its socket in the fuse box under the hood. Took about five days of after work trouble shooting to figure it out.
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Unread 10-08-2012, 08:35 PM   #5
AtomicDog
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Grounds and cables would be my first move, then starter circuit, i.e starter relay and ignition switch. Really need to know if voltage is dropping or nothing changes. Do the above checks with the headlights. If you can, hook the meter leads to the starter and read the voltage during start. Do the same thing at the battery. Run one side of a jumper cable between the ground post of the battery and the engine.
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Unread 10-09-2012, 10:19 AM   #6
SilverSE06tj
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Thanks! Ground appear fine. I am off to get a ohm reader an d test the ground. I cleaned the terminals really well. WHen i put the key in the ignition nothing happens. Headlights dont come on. If i turn the key a few times, the speedometer and the rpm needles will bounce once.
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Unread 10-09-2012, 10:48 AM   #7
gmiller0737
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If you are 100% sure the Battery is good you must have some kind of connection issue start by inspecting every battery cable connection at battery-Junction block & engine.
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Unread 10-09-2012, 10:58 AM   #8
KP-J33PIN
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Disconnect your terminals and take a wire brush to each terminal. My TJ would randomly not want to start somedays. quick disconnect for a few minutes with a wire brush to clean the terminals and mine would fire right up!
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Unread 11-16-2012, 09:32 AM   #9
SilverSE06tj
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Turned out to be an issue with the batter terminals. All good now.
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Unread 11-17-2012, 10:02 PM   #10
AtomicDog
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Thanks for the update! Glad all is well.
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Unread 11-26-2012, 05:12 PM   #11
M1ark
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Quote:
Originally Posted by SilverSE06tj View Post
Turned out to be an issue with the batter terminals. All good now.
I am having the exact same problem. Changed out the battery and same thing. How did you know which terminal was bad?
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Unread 11-26-2012, 08:20 PM   #12
XXRider
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Quote:
Originally Posted by M1ark View Post
I am having the exact same problem. Changed out the battery and same thing. How did you know which terminal was bad?
Clean them both, should be metal on metal. Use a wire brush to clean the connectors down to bare metal. Make sure the terminals on the battery have no corrosion on them.

http://www.howtocleanstuff.net/how-t...ery-terminals/
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alternator , battery , ecm , power , starter

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