Over the last few weeks I have been driving more and more in the dark and have noticed that when I have a bunch of things running like headlights and heater fan on at idle (waiting for stoplights) I am showing about 11.5v on the dash gauge.
Symptoms:
Headlights and foglights on: almost no drop
Heater fan and rear defroster: 1v drop
Turn signals: transient 1v drop at first flash then maybe .25v
When the engine is cold (and idling at 1000 rpm) drops are minimal.
As soon as I get back on the gas things go back up to 12.5-13.5v on the gauge.
So far I have done the following:
Got rid of the bullshit Rockford Fosgate battery terminals and installed marine type terminals and a new alternator today.
New Exide battery less than 2 months ago.
New 4 ga wire from + batt split to 2 8ga primary wires that go into fusebox.
New fusible link.
New 8ga ground wire from right rear of head to firewall.
New 4ga – batt to left fender.
Cleaned up ground point C.
The engine runs fine and there are no other effects but with everything I have put into this I should have a steady 12v at all times.
Voltage readings at the battery terminals after new batt terminals and alternator installation. Idle @ 650 rpm.
Engine off: 12.4v
Running no accessories: 13.5v
Running all lights/accessories: 9.4v WTF!?
Tomorrow morning I will do a new 4ga Batt – to block and I’m thinking of running 8ga ground wires from the left fender batt point to the following:
Alternator bracket
Firewall point C
Junction box ground points in drivers’ kickpanel at D and E
Do you guys think this will do the trick or should I be working more on the + end of things? I’m about out of ideas.
Thanks!
Symptoms:
Headlights and foglights on: almost no drop
Heater fan and rear defroster: 1v drop
Turn signals: transient 1v drop at first flash then maybe .25v
When the engine is cold (and idling at 1000 rpm) drops are minimal.
As soon as I get back on the gas things go back up to 12.5-13.5v on the gauge.
So far I have done the following:
Got rid of the bullshit Rockford Fosgate battery terminals and installed marine type terminals and a new alternator today.
New Exide battery less than 2 months ago.
New 4 ga wire from + batt split to 2 8ga primary wires that go into fusebox.
New fusible link.
New 8ga ground wire from right rear of head to firewall.
New 4ga – batt to left fender.
Cleaned up ground point C.
The engine runs fine and there are no other effects but with everything I have put into this I should have a steady 12v at all times.
Voltage readings at the battery terminals after new batt terminals and alternator installation. Idle @ 650 rpm.
Engine off: 12.4v
Running no accessories: 13.5v
Running all lights/accessories: 9.4v WTF!?
Tomorrow morning I will do a new 4ga Batt – to block and I’m thinking of running 8ga ground wires from the left fender batt point to the following:
Alternator bracket
Firewall point C
Junction box ground points in drivers’ kickpanel at D and E
Do you guys think this will do the trick or should I be working more on the + end of things? I’m about out of ideas.
Thanks!