Usually the starter motor is the culprit.
Porsche 997 alternator cable replacement.
Had this 997 come in today for a little tsb update.
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Occasionally after driving the car wouldn t start which was an issue with the early 997 s.
It is a very common and very well documented issue in early 997 s.
This is for seasoned mechanics who knows what they are doing.
A properly functioning alternator will show above 14v while running.
Alternator repair regulator replacement.
Step 3 check the cables.
All i can add is a.
Porsche 911s of years 2007 and 2008 and maybe afterwards using a differently keyed l dfm connector on the voltage regulator than previous years 997s.
The job requires pulling the alternator to get the cable off it removing the cable from the starter then.
May qualify for free shipping.
Parts 997 607 019 03 997 607 019 03 997 607 019 03 99760701903.
Porsche have a stronger thicker upgrade replacement available.
The alternator to starter motor cable isn t quite heavy duty enough and can corrode internally or.
Genuine porsche battery cable positive connection point to starter semi sol semi alternator instock ships today.
The alternator is connected straight to the positive terminal of the battery via a 16mm2 cable without any fuse or relay.
You do everything at your own risk.
Cost me 30 with a genuine bosch regulator versus 1000 for a new porsche alternator.
How to replace the alternator starter cable on a porsche 997 1 c4s 2006 disclaimer.
However there is a cable that connects from the starter to the alternator which can cause slow cranking issues.
If you are unsure of what you are doing you should consult with a certified mechanic or better a porsche dealer.
No small task unfortunately.
They could be damaged causing symptoms that look like a bad alternator.