Basic problem was car felt heavy to drive in night with lights on. Thought to have alternator tested. Recently placed new belt and appropriate tension was given.
Car is Cold so is alternator
No Load Condition:
@ idle Battery Voltage = 14.2 V
@2k RPM Battery Voltage = 14.2 v
On- Load:
Head- Lights; Low and High Beam
@ idle Battery Voltage = 13.7 V
@2k RPM Battery Voltage = 13.7 v
With AC along with blower motor
@ idle Battery Voltage = 13.4 V
@2k RPM Battery Voltage = 13.4 v
Car and Alternator are hot
No Load Condition:
@ idle Battery Voltage = 13.7 V
@2k RPM Battery Voltage = 13.9 v
On- Load:
Head- Lights; Low and High Beam
@ idle Battery Voltage = 13.4 V
@2k RPM Battery Voltage = 13.5 v
With AC along with blower motor
@ idle Battery Voltage = 12.9 V
@2k RPM Battery Voltage = 13.4 v
From tests above i think alternator 's voltage regulator is weak i guess as it gets too hot under load. You cant touch it. As compared to power pump that is on same bracket so if it was engine transferring heat it should be almost same.
Engine = F18B( 99 accord )
@syncview @Xulfiqar @spectra @SER_GTR
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