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Old 04-13-2015, 09:38 PM   #1
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So I got my truck driveable again. Replaced all the brakes, rotors, control arms, battery, alternator. I took on a test drive and it the voltage jumps around anywhere from 12-18 volts, the idle is very rough, it stalls out occasionally, and twice all the electrics cut out and shut down then restarted again while I was driving. I'll try to get a video tomorrow, but any ideas would be great before I take it to a shop.
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Old 04-13-2015, 10:14 PM   #2
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Hmm, recheck all your battery and alternator connections and cables. What was wrong with it before replacing all that?
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Old 04-13-2015, 10:43 PM   #3
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well mostly mechanical, suspension, brake issues. I think it had a misfire before but I'm not sure. I haven't driven it enough for codes to throw.
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Old 04-13-2015, 10:47 PM   #4
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I still guess the battery connections and cables or a bad alternator out of the box.
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Old 04-15-2015, 12:26 AM   #5
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So I got it to throw a code P0356. Think that could be causing that issue?
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Old 04-15-2015, 09:52 AM   #6
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Possibly;

http://www.obd-codes.com/p0356
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Old 04-15-2015, 07:03 PM   #7
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Coil 6 or plug 6 is bad. To rule out the COP, swap 5&6 see if the codes changes to a P0355, it if does, the COP is bad, if it stays P0356, the plug is bad. Or the connector to 6 is worn/no plugged in correctly. Look for chaffed wires on the connector.
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Old 04-15-2015, 11:41 PM   #8
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if I'm looking at the engine which plug is plug 6?
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Old 04-15-2015, 11:48 PM   #9
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For either 4.6 or 5.4


Click the image to open in full size.
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Old 04-16-2015, 12:04 AM   #10
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Quote:
the voltage jumps around anywhere from 12-18 volts,
You need to fix the above issue, jumping all over is a sign of bad voltage regulator.
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Old 04-16-2015, 12:04 AM
 
 
 
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