dereko

Filter, what filter? A 2003 doesn't have a replaceable filter than I know of?

Ahsai

The green/white is the +12v supply and the fat brown is the ground. Be careful with sparks on a seized motor. I would not recommend jumping the pump from there for safety reasons.

There should be a teabag filter built in at the pump's intake. Not replaceable though.

Mike Murphy

Youre right, a filter is on some of the earlier 996s, such as the 1999 model.

Gretch

and 2000 C4, at least.

dereko

Update, have tried direct power to the pump, dead.

Removed pump from tank, measured motor, open circuit. Can't see any unusual signs of dirt or contaminants on filter, pump looks as new as the day I replaced it.

Just bad luck I guess, pump was only replaced a couple of years ago and hardly done 1000kms

Moral of the story, drive it more???

Ahsai

Glad to hear you found the culprit. You can take apart the pump and try to see what failed inside.

Ahsai

Also a good idea to make sure the inlet/filter is not clogged, which will strain and kill the pump.

paul29

Not familiar with Porsche fuel pumps but the experts here can/will chime in and advise if this is viable. If it is a straight DC fuel pump motor you can rock the armature and possibly break it free by reversing the pump + and - leads back and forth a half a dozen times with a separate battery if need be. Have done this on N American FI vehicles with a "frozen fuel pump" that have sat for extended periods of time with good success.