97 Boxster with Intermittent Brown Out

[Bush Pilot]

Originally Posted by JFP in PA

Don't bet on it. The corrosion issue is internal to the cable, not just at the connections. Porsche has a TSB about it and improved replacement cables because of it. And a voltage drop test only takes about 10 seconds to run.

OK. Thank you. I'll give it a try. That said when you say "primary" do you mean the high current cables from the battery (+) terminal to the alternator and starter? If so, any thoughts on what voltage drop is acceptable? I suppose another method would be to measure the resistance of the cable and compare that resistance to what an analysis would yield for how much resistance should be there based upon the cable gauge, type (stranded/solid) and length.

[blue62]

Originally Posted by Bush Pilot

OK. Thank you. I'll give it a try. That said when you say "primary" do you mean the high current cables from the battery (+) terminal to the alternator and starter? If so, any thoughts on what voltage drop is acceptable? I suppose another method would be to measure the resistance of the cable and compare that resistance to what an analysis would yield for how much resistance should be there based upon the cable gauge, type (stranded/solid) and length.

"Primary cables" = both battery cables.
Acceptable voltage drop.= It should be very little... a few mili amps.
Go to Utube and look up voltage drop tests.
You will see how to do the tests properly and what to expect for voltage drop.

Edit: I said mili amps I ment to say mili volts.