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What's up with the ICP readings? As a side note, I have been watching the FICM readings for a while but not on the graph. On the digital display it never drops below 47.5 volts.
Digital gauge is showing a sample that may be an average between
the sample times. The trace should be "live"' and you will see every bump.
That is the problem with digital. You have to know the sample rate
and it it's averaging or not. But sometime the scope type trace is too
much info to work with.
Ramsay, What are you using to show the trace for the FICM?
BTW You should see the IDS trace for the alt output. No big dips
like yours but it does have some saw tooth to it.
Digital gauge is showing a sample that may be an average between
the sample times. The trace should be "live"' and you will see every bump.
That is the problem with digital. You have to know the sample rate
and it it's averaging or not. But sometime the scope type trace is too
much info to work with.
Ramsay, What are you using to show the trace for the FICM?
BTW You should see the IDS trace for the alt output. No big dips
like yours but it does have some saw tooth to it.
Did you have an alternator or battery go out on you recently?
I did a battery load test and one of the batteries is toast. So I guess to answer your question...Yes. On a side note. can anyone tell me what the voltage should read while cranking?
Digital gauge is showing a sample that may be an average between
the sample times. The trace should be "live"' and you will see every bump.
That is the problem with digital. You have to know the sample rate
and it it's averaging or not. But sometime the scope type trace is too
much info to work with.
Ramsay, What are you using to show the trace for the FICM?
BTW You should see the IDS trace for the alt output. No big dips
like yours but it does have some saw tooth to it.
I did a battery load test and one of the batteries is toast. So I guess to answer your question...Yes. On a side note. can anyone tell me what the voltage should read while cranking?
Dips down to 11 are common, but down to 10 is also considered okay for a short period. If you see 9's, that's certainly less than incredible and a reason to consider more capable batteries, a time to clean up grounds, or a time to ensure that your starter isn't starting to go south.
With the new 850 CCA batteries when I do the first start of the day.
10.x does flash on for just a blink then back up as it starts right up.
But the real voltage is +0.5 higher do to the SGII way of reading it.
So I really think it more likely in the 11.5 or more range.
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