Hey guys,

Random question, but does the Power FC tend to drain the cars battery when turned off somehow?

Ive heard mixed rumours that it can? and ever since I put the power fc in my car the battery would die after a week. Then I got another battery (not sure of condition) and put it in the boot and now the battery dies within hours... Not sure if this has anything to do with power FC or what.

Sorry if this is in the wrong section.

 

Probably just a worn out battery...

 

Have you monitored your alternator output as you idled and drive?

 

bump this up i have the same problem, after 2 days of not stating my car the battery will have fully drained
if i have the commander plugged in and the car is off it still displays and is on so thats whats making me think its the power fc, so i have to unplug the commander everytime i turn off my car

 

I have owned two PFCs in the same 92 FD since 1992.
You have a wiring problem as that is not the norm!

 

im not too familiar with wiring but my friend told me it might be something to do with the wiring harness/battery ground?

 

Get a mutlimeter and download the factory wiring diagram and start from there. Does the car have any other electrical issues that you are aware off?