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Car just kills while driving???

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Old Jul 7, 2015 | 09:59 PM
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Default Car just kills while driving???

My car 06m6 just randomly kills while driving. No check engine lights or anything. Put the car in neutral and it fires right back up while coasting. Anyone experienced this?
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Old Jul 7, 2015 | 10:27 PM
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Some details would likely help.

Is the car stock?

Original tune?

M6 or auto?

Does it do it while just driving down the road? Coasting? Engine braking?
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Old Jul 7, 2015 | 11:28 PM
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So your electrical power is still there, the engine just shuts off?


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Old Jul 8, 2015 | 06:16 AM
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Car is M6 cammed. When it kills, its not just the engine. Everything goes off like it was sitting in the garage. Fires right up when I hit the start button.
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Old Jul 8, 2015 | 07:53 AM
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Check for body and communication codes. This will give an idea of which module is loosing power or ground. Code will say "loss of communication with module X."
Note, a hand held code reader will not work. Will need a real scanner or tech2
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Old Jul 8, 2015 | 09:55 PM
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I would start with a wire wiggle of the power wires while doing a voltage drop test. Sounds like it could momentarily losing battery voltage.
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Old Jul 8, 2015 | 11:16 PM
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Originally Posted by stein3282
My car 06m6 just randomly kills while driving. No check engine lights or anything. Put the car in neutral and it fires right back up while coasting. Anyone experienced this?
i tried search, because i read this problem about 3 years ago, it was the battery cable connected at the starter.

problem is i cant remember if the nut was not tight or the entire lug at on the starter was broken and sorta loose. either way, they reached the starter terminal/battery cable lug and wiggled it (with NO finger rings on) and found it (?) loose
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Old Jul 9, 2015 | 06:33 AM
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Originally Posted by ChevyDave
i tried search, because i read this problem about 3 years ago, it was the battery cable connected at the starter.

problem is i cant remember if the nut was not tight or the entire lug at on the starter was broken and sorta loose. either way, they reached the starter terminal/battery cable lug and wiggled it (with NO finger rings on) and found it (?) loose
This makes the most sense to me as it just started happening after I had longtubes installed on the car. The one mod I did not do myself. Guess I will be getting under there and checking for some loose wires.
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Old Jul 11, 2015 | 02:06 PM
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Did you check all your power wires, Including the negative side of the circuit?


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Old Jul 12, 2015 | 10:01 AM
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A friend of mine had same issues..ground wire at battery was corroded really bad..inside the coating..couldn't tell till he took it off. replaced with new cable solved the problem.
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Old Jul 12, 2015 | 10:04 AM
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It's probably something regarding the battery... not sure.
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Old Jul 14, 2015 | 05:44 AM
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Thanks guys. I have not had a chance to troubleshoot yet, but thanks for all the suggestions. I will post once I find something.
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Old Apr 13, 2017 | 03:30 PM
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Same problem a few years ago. Finally tested out to be a bad engine ECM. Replaced - problem gone.
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Old Apr 13, 2017 | 07:26 PM
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Originally Posted by Wes Burch
Same problem a few years ago. Finally tested out to be a bad engine ECM. Replaced - problem gone.
​​​​​​Sane thing was wrong with mine also...I got a new ECM.
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