How The Weekend Finished Up

[rexcramer]

WTH, the battery and the alternator both tested good at Autozone. So I put it back in and fired it up. Magic, charging system mysteriously fixed its self? System is putting out +/-14.4 volts.

I plugged my OBDII reader in and zero codes stored or pending. Long shot; I am tempted to pull the 'high amp' fuse cover off and look for corrosion. Any suggestions from my esteemed colleagues?

I have to fix/replace something or my wife will never get back in the car.

[ryanjboutin]

Originally Posted by rexcramer

WTH, the battery and the alternator both tested good at Autozone. So I put it back in and fired it up. Magic, charging system mysteriously fixed its self? System is putting out +/-14.4 volts.

I plugged my OBDII reader in and zero codes stored or pending. Long shot; I am tempted to pull the 'high amp' fuse cover off and look for corrosion. Any suggestions from my esteemed colleagues?

I have to fix/replace something or my wife will never get back in the car.

For what it's worth, and you may already know, but simply putting a Fluke on a battery does indicate its status.
I assume Autozone put a load tester on the battery, and gave you the OK on it.

I had a similar problem on an old Ford van a while back.
The battery terminals were not making good contact.
No visual signs of corrosion on the battery posts or lead clamps.
Just enough dirt/oil/time had seeped between the post and clamps to make the system shut down.

Hit it with electrical cleaner, wire brush, and placed the red & green chemically infused battery felt pads and never had a problem again.

I put those impregnated donuts on all of my batteries.

https://www.amazon.com/989-Anti-Corrosion-Washers-2-Pack-12-Volt/dp/B000CQFS0O/ref=sr_1_fkmr0_3?s=automotive&ie=UTF8&qid=1475327305&sr=1-3-fkmr0&keywords=battery+corrosion+preventative+donut

[Gilles]

Originally Posted by rexcramer

WTH, the battery and the alternator both tested good at Autozone. So I put it back in and fired it up. Magic, charging system mysteriously fixed its self? System is putting out +/-14.4 volts.

I plugged my OBDII reader in and zero codes stored or pending. Long shot; I am tempted to pull the 'high amp' fuse cover off and look for corrosion. Any suggestions from my esteemed colleagues?

I have to fix/replace something or my wife will never get back in the car.

Hello Rex, try wiggling the cable that connects the positive side of the battery to a male fitting on the firewall, this fitting is the connector of the 'high amp fuse box' that sits behind the firebox.

I went nuts trying to determine an electrical issue on my CS, and found out that the battery cable connects into the male connector 'by friction"…! After I removed the cable and clean the surface rust with electric contact cleaner, and pushing the cable back into the male prong with some dielectric grease and so far have not had the same issue.

Also noticed that the male connector has some kind of coating on it, so I avoid sanding it too much, I don't understand why Porsche didn't install a standard 'bolt/nut connector' instead of a spiral spring that allows the power from the battery to power distribution box…

Good luck with your search!