Bruce Amacker Posted May 4, 2011 Share Posted May 4, 2011 Is this new? I haven't seen this before on replacement FICMs. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted May 4, 2011 Share Posted May 4, 2011 Highest I have seen is 49.5 momentary spiking. Quote Link to comment Share on other sites More sharing options...
Matt Saunoras Posted May 5, 2011 Share Posted May 5, 2011 I can think of one aftermarket company that makes a 58v "upgraded" version Quote Link to comment Share on other sites More sharing options...
mchan68 Posted May 5, 2011 Share Posted May 5, 2011 I can think of one aftermarket company that makes a 58v "upgraded" versionThat would be SWAMPS. I remember having one particular truck that would peak out at 50 volts even. Since this particular truck didn't have any driveability issues, I chose not to pursue it any further. Quote Link to comment Share on other sites More sharing options...
Bruce Amacker Posted May 5, 2011 Author Share Posted May 5, 2011 This was a new OEM module and the data came from an IDS. (student) Quote Link to comment Share on other sites More sharing options...
64nomore Posted June 22, 2011 Share Posted June 22, 2011 I read somewhere online that a large power inverter (12v dc to 120 ac) can cause this but don't remember the source. Quote Link to comment Share on other sites More sharing options...
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