997-1 Voltage Drop - Charging System

[EleCTriCT]

Hey Everyone...

I have a 2006 997 Cab / Tip I'm dealing with right now..

Battery going dead issues... new alt/battery.. Found I have major voltage drop from the alt to the batt...

Some of my reading has lead me to beleive that there is a known issue with the 997 battery cables...

Does anyone know more? Which cables/ Updated part numbers etc? Labour time?

I've done some forum searching and scanned through the tsb's but havent found much.

Thanks in advance for anyone's Help!

Cheers!

Derek.

[AP 997S]

I saw this comment on another Porsche site.

"The cable from starter to battery was overcrimped at factory on some cars. When the car has been running for a while it overheats and makes it hard to restart. Eventually the starter will go bad.

If you're under warranty it will be covered and in some cases goodwilled.

It's supposed to be an easy diagnosis by measuring voltage drop on either end."

I understand parts & labor to change this cable is quite high since the starter is in the motor compartment and the battery is in the trunk.

[Loren]

Plus TSB 8/06 0101 Breakdowns Due to Loose Ground Strap -- dated Sep 13, 2006

[PAULSPEED]

There also is a larger(Fatter) cable for the 997-2. The

997-2 cable works great on a 2006 car.

The bad news is the motor needs to be removed

for a tip car. Rumor is that it can be done with a

manual.

A dealer near me replaced one with a tip, but

it was extremely hard work to do.

Paul

[RFM]

The cable can be replaced on a Tip car with the engine in place as well but is much harder to do. There is simply more room to work in the engine bay on a manual.

[PAULSPEED]

It is the transmission cooler on top of the transmission

that is in the way.

Paul

[EleCTriCT]

Thanks everyone... Quick update. 2006 997 cab/tip Problem: vehicle doesn't start in am, dead battery. Alternator and multiple batteries previously replaced. We found regulated voltage at battery low during charging system check. Approx 12.8v With our diag and some input from the forum we condemned the main battery cable from the tranny to the front firewall. With our diag and cable replacement was about 8 hours labour. Vehicle regulated voltage well over 13v. Another Porsche back on the road. Cheers!

Edited July 21, 2011 by EleCTriCT