Carrera 4 Fuel Pump

[spd64]

I'm about to attempt to swap out the fuel pump on my 1999 C4 myself. I was wondering if anyone else had done this, or if anyone knew where i can find a good DIY manual for how to do this.

[xmac]

This is the closest DIY with pictures I could find. If you get a chance take some pictures and upload.

http://www.6speedonline.com/forums/996-turbo-gt2/180764-fuel-pump-system-exposed-couple-pictures.html

[Loren]

The fuel pump is inside the gas tank. It will take a special tool to take the large nut on the tank off and the tank should be drained first.

Once the fuel pump is replaced the fuel level sensor will need to be re-calibrated - using exactly 28 liters of fuel only. And C4 is tricky because of the saddle-bag gas tank that sits over the front axle.

About a 2 hour job for someone that has done before - plus you will need a Porsche PST2 or PIWIS tester for the calibration.

If you haven't done this before you might want to take it to your local Porsche shop and get a quote.

Edited December 6, 2011 by Loren
corrected calibrate amount for C4

[logray]

There's this write up too.

http://www.pelicanparts.com/techarticles/Boxster_Tech/22-FUEL-Fuel_Pump/22-FUEL-Fuel_Pump.htm

Not so much a DIY job unless you have a PST2 then I would consider it...

[spd64]

I would rather do this one myself. The Porsche center for highway robbery (dealership) is right by my house so if need be I can just have AAA bring it there if I just can't do it on my own. From what others have said the tool to get in the tank isn't needed and as long as you run most of the gas out of the tank things go well.

Really the only question I have now is can I install the new pump and then run it over to the dealership for them to calibrate it?

I trust you, Loren, and if you say don't attempt this one myself I most likely won't, but I would like to try to do this as I rarely get to work on the Porsche as I have my Supra and other past cars.

Let me know

[Loren]

There's this write up too.

http://www.pelicanpa...L-Fuel_Pump.htm

Not so much a DIY job unless you have a PST2 then I would consider it...

C4 has two sucking jets (Porsche's words) so the Pelican DIY is not a C4. Just a few more hoses and fitting on C4 - again because of the saddle bag tank.

In this case the Turbo DIY is more accurate. But of course use the shop manual if you have one.

[Loren]

I would rather do this one myself. The Porsche center for highway robbery (dealership) is right by my house so if need be I can just have AAA bring it there if I just can't do it on my own. From what others have said the tool to get in the tank isn't needed and as long as you run most of the gas out of the tank things go well.

Really the only question I have now is can I install the new pump and then run it over to the dealership for them to calibrate it?

I trust you, Loren, and if you say don't attempt this one myself I most likely won't, but I would like to try to do this as I rarely get to work on the Porsche as I have my Supra and other past cars.

Let me know

It's your choice - if you want to do it or not.

Just realize the Porsche dealer may want to charge you to:

- remove the fuel in the tank

- put in exactly 28 liters

- calibrate using the PST2 or PIWIS tester.

So, if you want to do it less expensively you might find a PST2 to borrow.

[JFP in PA]

As strange as this is going to sound, swapping out the pump is the cheapest part of doing one of these. The time (read labor) to make sure the tank is fully empty, then refill it with a precise amount of fuel, and do the recalibration is going to be a couple of hours of shop and diagnostics time. Pulling and replacing the pump is about an hour. Unless you have access to everything you need, swapping out the pump and then towing the car to the dealer is most likely going to end up costing you more than if you just let them do it…….