battery gauge jumping
- Thread starter migraine
- Start date
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yo,
With the key in START or RUN, battery voltage is present at the charge indicator. If the generator (GEN) is not generating power, the voltage regulator inside the generator grounds the charge indicator through Circuit). The charge indicator illuminates.
When the generator is generating power, the voltage regulator inside the generator applies battery voltage to the charge indicator through Circuit. With battery voltage present at both ends of the charge indicator, there is no current flow and the charge indicator does not illuminate.
Ck alt/batt voltage
With the engine running at 2000 rpm, check the generator output voltage. The voltage should be between 13.0 and 15.0 volts.
a normal battery that is fully charged produces 12.6 volts
Check that click, it may be coming from da Charge Indicator Lamp Relay (I have not seen one of these yet and most 90 wiring diagrams do not show it, so let us know if it is there or not.
see Location in Engine Bay Diagram in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Next is to ck wiring;
Charge Indicator Wiring Diagram in 90-91 Bronco & F Series
Source: by Chilton http://content.chiltonsonline.com/content/images/8828/images/88286w25.pdf
With the key in START or RUN, battery voltage is present at the charge indicator. If the generator (GEN) is not generating power, the voltage regulator inside the generator grounds the charge indicator through Circuit). The charge indicator illuminates.
When the generator is generating power, the voltage regulator inside the generator applies battery voltage to the charge indicator through Circuit. With battery voltage present at both ends of the charge indicator, there is no current flow and the charge indicator does not illuminate.
Ck alt/batt voltage
With the engine running at 2000 rpm, check the generator output voltage. The voltage should be between 13.0 and 15.0 volts.
a normal battery that is fully charged produces 12.6 volts
Check that click, it may be coming from da Charge Indicator Lamp Relay (I have not seen one of these yet and most 90 wiring diagrams do not show it, so let us know if it is there or not.
see Location in Engine Bay Diagram in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Next is to ck wiring;
Charge Indicator Wiring Diagram in 90-91 Bronco & F Series
Source: by Chilton http://content.chiltonsonline.com/content/images/8828/images/88286w25.pdf
