(No longer) Stuck, no fuel pressure!! Fuel pump!! (Upated)

[Andrew Olson]

Good job, Jim. Check back with us in about 2-years to let us know if your fix has held up.

As for the cap going at the same time... wow! That's quite a coincidence. Glad you found it.

[86'928S MeteorGrey]

Sorry to hear of the trouble with the pump. Great investigation photos. I'm not sure if my car still has an in-tank pump or not. My inclination is to remove it next time I am in there.

Thanks again for the use of the screwdriver on the fun run. Hopefully you were never at a point where that screwdriver was all you needed. Did it show up in the mail?

[jcorenman]

Originally Posted by 86'928S MeteorGrey

Sorry to hear of the trouble with the pump. Great investigation photos. I'm not sure if my car still has an in-tank pump or not. My inclination is to remove it next time I am in there.

Thanks again for the use of the screwdriver on the fun run. Hopefully you were never at a point where that screwdriver was all you needed. Did it show up in the mail?

Mike,

If you pop the cover on the back of the fuel tank (two 10mm nuts up high, between tank and bumper-cover) you can see the filter and pump, and the hose that connects to the fitting in the bottom of the tank. Take a look at that tank fitting, if there are terminals and wires then it is the in-tank pump fitting. I would at least pull it out and have a look.

Here is Andrew's write-up from a couple of years ago. (It looks like he fitted a new pump without changing the hose... How is it doing?? ):
http://forums.rennlist.com/rennforum...-044-pump.html

And yes we got the screwdriver back, thanks! I'm glad it was helpful!

[Andrew Olson]

I ran out of gas in my driveway a month or so ago. I should have taken the opportunity to check it then.

[ROG100]

For the first time in 7 years my GTS left me stranded last Friday night.
Sean and I did all the usual checks. Car would start and tick over at a slow 300/400 rpm but would not take any pressure on the accelerator before it died. Seemed to be a fuel issue as we had low pressure on the fuel pressure gauge 15/20 psi.
Here is the strangest part. The car would still run at the low 300/400 rpm WITHOUT the fuel pump relay or jumper. I would be interested in knowing why?
It started to rain and I secumbed to my AAA Plat card and had the car taken home - sound familiar Jim.

Well the result & cause is a mirror image of Jim's issue. No need to take pictures as they are all identicle to mine. Doc Mirror took out the jammed external and the pieces of the internal and will do a failure anyalasis when he gets back from skiing.

Here's the kicker - both pumps were only two years old. I think this is the life expectancy Andrew predicted.

Had the new pumps in stock and replaced them and car runs fine again.

The hose that Jim chose is not ideal for immersion in fuel - however a far better choice than what is supplied. I will do some more research and see if there is a better alternative available.
All this may be a mute point at some point in the future due to the OEM no longer making the intank pump. However after checking Porsche's stock they have 1400 sitting in Germany so they will not be NLA for a while.

[jcorenman]

Roger, Sorry to hear that you got stuck!! That's no fun at all.

So you fit the new in-tank pump without replacing the hose? Be sure to make a note on the calendar

And I agree that the Weatherhead hose from NAPA is not ideal-- the nitrile inner tube is fine (that's where the hose manufacturer intended the fuel to go) but I am thinking that the neoprene outer tube may not hold up that well with the current fuel concoctions. Stainless braid-over-nitrile might be a better choice.

[ROG100]

Jim,
I needed my car and will go back in and make it good.
Besides when you have a few internal and external pumps sitting on the shelf its an easy fix.
I am looking at PTFE - Teflon.
Roger