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Unread 01-24-2015, 03:38 PM   #1
Registered User
Join Date: Jan 2015
Posts: 2
95 starting issue

I'm having problems getting my 95 wrangler 4.0 started. Never have any any electrical issues before, but I recently had someone else working on my vehicle, and in there care the battery died. The hooked up the battery charger to get it started and told me that smoke came out of the ecu. This is all their story not mine. Anyways, I'm at a loss at why it wont start. This is what I know, battery, starter, alternator are all in good shape. Jeep cranks perfectly, but will not start, even on ether. I'm not getting any spark, but I know that the coil is good. Im only getting ten volts to one lead to the coil. Has brand new crank position sensor, but I am not getting any voltage to it. Check engine light will not go off, and It wont give me the code when I turn the key three times. Upshift light is also staying on. What should be my next step, should I plan on replacing computer.

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Unread 01-25-2015, 02:59 PM   #2
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1993 YJ Wrangler 
Join Date: Jun 2014
Location: Apopka, Florida
Posts: 61

From the sound of your thread you already known the answer to your question. When you hook up the charger backwards, you will let the smoke out of most IC's (diodes, resistors etc), net result but new IC's in this case ECU and any other solid sate device that was hooked to the battery at the time.
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Unread 01-26-2015, 06:49 AM   #3
Web Wheeler
1989 YJ Wrangler 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 18,791
Replied on your other thread. Follow the directions on the hard start.
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