mrgto
Junior Member
- Joined
- Dec 12, 2018
- Posts
- 21
- Reaction score
- 0
- Location
- US
- First Name
- Mike
- Truck Year
- 1988
- Truck Model
- r30
- Engine Size
- 350
Hey Guys,
It's actually an '87 350 TBI.
I'm in the middle of trouble shooting my motor. When running Tunerpro RT, it shows that the Battery Volts are low. well under the 13.5-14v that my voltmeter is showing off the alternator. I have an aftermarket 12v Gauge and it's showing what my voltmeter shows.
My question is where does the ECM pickup the 12v "signal' that it's reading.
My thoughts are a bad wire.
It's actually an '87 350 TBI.
I'm in the middle of trouble shooting my motor. When running Tunerpro RT, it shows that the Battery Volts are low. well under the 13.5-14v that my voltmeter is showing off the alternator. I have an aftermarket 12v Gauge and it's showing what my voltmeter shows.
My question is where does the ECM pickup the 12v "signal' that it's reading.
My thoughts are a bad wire.
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