insights on a strange DC electric phenomenon?
a couple yrs ago, i disconnected the BIRD solenoid that allows both engine and coach batts to link for charging and emergency start. since then, i have disconnect the pos term of the fully charged ...
Forum Discussion
MEASURE
MEASURE
MEASURE
ECU's are not autonomous. They have ROM, RAM and DRAM, EPROM, and they consume power to some degree.
Make your own cigarette lighter feeding power supply. All's it takes is 12 volts worth of any battery, and a wire and plug.
Connect the alternate power supply to the cigarette lighter plug.
Disconnect the battery negative cable.
Connect your digital multi-meter across the disconnected negative battery cable. Be sure the meter leads are plugged into AMPS and not MILLI-AMPS. Set the dial for AMPS
Yank the plug on the cigarette lighter 12 volts.
Go read the amperage on your multi-meter.
Be sure the car interior light, glove box light and any other lights are not burning, when you do this.
If under 1-amp, reconnect the cigarette lighter power supply then switch the leads to MILLI-AMPS and turn the dial to MILLI-AMPS
Disconnect the lighter plug power supply once again, then go read the milliamp draw on the meter.
I intensely dislike quiescent draws of 50 ma or more.
But when you reconnect, the non-loss of power to the engine ECU will have retained ECU calibration. No rough starts or stalling.
MEASURE
MEASURE
ECU's are not autonomous. They have ROM, RAM and DRAM, EPROM, and they consume power to some degree.
Make your own cigarette lighter feeding power supply. All's it takes is 12 volts worth of any battery, and a wire and plug.
Connect the alternate power supply to the cigarette lighter plug.
Disconnect the battery negative cable.
Connect your digital multi-meter across the disconnected negative battery cable. Be sure the meter leads are plugged into AMPS and not MILLI-AMPS. Set the dial for AMPS
Yank the plug on the cigarette lighter 12 volts.
Go read the amperage on your multi-meter.
Be sure the car interior light, glove box light and any other lights are not burning, when you do this.
If under 1-amp, reconnect the cigarette lighter power supply then switch the leads to MILLI-AMPS and turn the dial to MILLI-AMPS
Disconnect the lighter plug power supply once again, then go read the milliamp draw on the meter.
I intensely dislike quiescent draws of 50 ma or more.
But when you reconnect, the non-loss of power to the engine ECU will have retained ECU calibration. No rough starts or stalling.
