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Rpm freeze

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Old 08-16-2011, 08:52 PM   #1
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Default Rpm freeze

With my carb'd ls1 and msd 6010 box, if I run both fans for long then get on it, it'll freeze at about 5000 rpm and power cuts out. What could this be about? If I keep both fans off, this doesn't happen. Do I need to run the msd and or the fans on a relay? Thanks in advance
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Old 08-16-2011, 09:16 PM   #2
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Maybe you aren't getting a full 12 volts to box when the fans are running.

How do you have things wired? What does your volt meter read with the fans on and off?
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Old 08-23-2011, 12:20 PM   #3
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There are a few threads about high RPM trouble with the MSD box being attributed to poor 12v supply. I run mine on a relay and haven't seen any problems at all. I would recommend doing that.
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Old 08-23-2011, 12:23 PM   #4
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ran dedicated 10ga to mine...no issues as my efans are on there own relays.
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Old 08-26-2011, 10:13 PM   #5
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could be a bad ground too.
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Old 08-27-2011, 12:12 PM   #6
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^^^^^
the cause of many a head scratcher.
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