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Bad Alternator: Causing Break Up/ Mis- fire

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Old 10-07-2010, 05:25 PM
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Default Bad Alternator: Causing Break Up/ Mis- fire

I was driving home on my new motor (50 miles on it) and it was pulling very nice and smooth until about five to ten minutes after I started. I then lost my tach/ speedo and eventually had a loss of power and a stalling feeling. I pulled into Advanced Auto luckily and it stalled the second I pulled in. Immediately I checked my oil, coolant level, every plug on my harness, all grounds and fuses. I had a feeling my alternator/ battery was going and saw a battery light flash before it stalled. The guy jumped me that worked there and it started instantly and was enough to get me home. I took out my alternator out and the bench test failed and the battery was holding a charge after it was charged. I have never experienced a battery dying causing bad mis- fires even though it makes sense considering the spark did not have enough power to jump the gap. Has anyone else experinced this?

My setup is:
B20b bottom end stock sleeves
9:1 Ross, Eagle combo
B16a SiR II fully built head
z6 engine harness
NGK plugs and wires gapped correctly
Old 10-07-2010, 05:48 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

Ron where are you? lol
Old 10-07-2010, 07:56 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

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Old 10-07-2010, 08:20 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

Had the same thing happen to me when my alternator die on me
Old 10-07-2010, 08:25 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

I'm also not surprised by the power loss and stalling caused by a bad alternator. So can we presume that replacing the alternator has fixed the problem?
Old 10-07-2010, 08:37 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

dude u answered ur own question.. think about it, alternator cannot charge battery so engine is running off a battery as charge decreases so will engine performance as well as operation.
Old 10-07-2010, 11:07 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

Originally Posted by RonJ@HT
I'm also not surprised by the power loss and stalling caused by a bad alternator. So can we presume that replacing the alternator has fixed the problem?
i posted a WTB on here for it and am getting a new one. the parts stores around here want $170+ for one and my friends do not have an extra one
Old 10-07-2010, 11:08 PM
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Default Re: Bad Alternator: Causing Break Up/ Mis- fire

Originally Posted by tico
dude u answered ur own question.. think about it, alternator cannot charge battery so engine is running off a battery as charge decreases so will engine performance as well as operation.

um i know? i wasn't asking what was wrong. I was asking has this happened to anyone else
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