'91 CSS ECM problem w/system...

[MadPSI]

I installed a PPI 2300M amp and a 12" Orion HCCA sub in my car and it hits pretty hard. Unfortunately, the car's been acting up since I installed the system.

For some reason, the amp draw becomes so high that it seems that the ECM goes into a "protection mode" and the car won't start for a while. Eventually the car starts and acts normally, and no problems occur if I don't turn the stereo up. As soon as I turn up the volume for a while the car decides not to start again the next time.

The car is bone stock, with a line converter used to feed the amp a signal from the stock head unit. Is there a way to combat this problem? Better battery? Better alternator? Something to further protect the ECM?

[jdcutty]

Upgrade the battery cable to at least the size of your power lead, clean all connections, get an optima red top, 160A alt, and a cap. Just some suggestions.

[MadPSI]

I have 0-Gage wire running to the amp from the battery, and a short 12" 0-Gage ground wire as well. I guess I'll try a better battery first, since I've seen 4000+ watt systems use stock alternators, and caps are basically useless...

I guess I was looking more for a way to isolate the ECM from the rest of the car's electrical system...