Should it not say to use sensor ground (signal return)? I thought all sensors used sensor ground? Is there something different abut this one?
Flex Fuel Sensor Wiring
Moderators: jsmcortina, muythaibxr
Flex Fuel Sensor Wiring
In the manual it shows the instructions below:
Should it not say to use sensor ground (signal return)? I thought all sensors used sensor ground? Is there something different abut this one?
Should it not say to use sensor ground (signal return)? I thought all sensors used sensor ground? Is there something different abut this one?
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
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jsmcortina
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Re: Flex Fuel Sensor Wiring
Flex puts out a digital signal so any ground offset should have no impact. What is the current draw on the flex sensor? If very small then it would be ok to share the sensor ground.
James
James
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Re: Flex Fuel Sensor Wiring
Ah OK, I cannot find the datasheet, but it is the common Continental/GM 13577379.jsmcortina wrote:Flex puts out a digital signal so any ground offset should have no impact. What is the current draw on the flex sensor? If very small then it would be ok to share the sensor ground.
James
1995 Ford Lightning. Dart based 427 Windsor, Novi 2000, full sequential, E-85, etc. MS3X/v3.57
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lifeandffl
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Re: Flex Fuel Sensor Wiring
Okay, I'm not sure if there is something wrong with my MS3X but I am getting 5V OUT of the flex line. Can anyone confirm whether or not it should have any voltage coming from the MS3X pin 5?
-Joey
-Joey
Re: Flex Fuel Sensor Wiring
The Flex pin has a built-in pull-up resistor to 5v; the flex sensor itself grounds this pull-up, giving a signal the processor can recognise.
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Coming soon: OctoMAP Sensor Module
TTR Ignition Systems