Idling Voltage after warming up is tooo low (2JZ in A70)

MrOizo

New Member
May 24, 2008
205
0
0
Auckland, New Zealand
Hey peoples.

I have been noticing that after my car has warmed up, the voltage will drop to around 11-11.5 volts until i tap the throttle and will go to the normal level of about 13.8v-14.0v. Once warm, the revs are at about 600RPM

I have battery in the boot(trunk) with 35mm^2 (1-2Gauge) cable and the negative going straight to ground.
I have good earths all round, engine to chassis in 4 locations with 4GA.

What could be the cause of the problem i am having?

Any input would be appreciated.

Cheers!

(JZA70-R with 2JZGTE)