11-13-2015, 03:52 AM
that is correct,
the #1 rule in electronics, is never diagnose logic, when the power bus is full of noise.
in fact its the first check,
one other common on cars, Noise wise, is the alternator with bad 3 phase diode pack, if one diode short, the alternator makes HUGE electrical noise
and if the ecu caps are not good, this gets worse.
can be heard on your AM radio , if present.(off station, between them.) IT sings a tone that rises with RPM,
the #1 rule in electronics, is never diagnose logic, when the power bus is full of noise.
in fact its the first check,
one other common on cars, Noise wise, is the alternator with bad 3 phase diode pack, if one diode short, the alternator makes HUGE electrical noise
and if the ecu caps are not good, this gets worse.
can be heard on your AM radio , if present.(off station, between them.) IT sings a tone that rises with RPM,
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