Boxster stops while driving - 986 Forum - The Community for Porsche Boxster & Cayman Owners

sbhodge · 01-12-2011, 12:47 AM

Car is now with local mechanic. He started it up and it died on him a minute later. He said it sounds fuel related. Will run it through the scan tool and have a look at all the basic things first. Seems pretty keen and enthusiastic. Will keep you all posted when I hear more.

sbhodge · 01-15-2011, 12:09 PM

My mechanic is 100% certain it is fuel related as when the car died at idle we lost all fuel pressure. He has been told not to remove or replace the fuel pump unless he can get hold of a porsche computer to re-calibrate it once it goes back in. Apparently the car won't restart if he can't do this.

Does anybody know if this is true?

mikefocke · 01-15-2011, 03:28 PM

There is no mention of recalibration. Ask the mechanic if that isn't '02 and later.

http://www.renntech.org/forums/index.php/tutorials/article/61-fuel-filter-replacement-to-my01

sbhodge · 01-17-2011, 04:26 PM

Hi Mike
I couldn't find anything on re-calibration either. Found a step by step instruction for fuel pump replacement on pelican parts. Looks like it may just be relay failure. Tested the relay which failed. Tested power to fuel pump which was fine. Checked all the lines for splits or wear and tear. Have ordered a new relay and some basic maintenance parts from Porsche. Will let you know how I go. Hopefully it is that simple fingers crossed.

sbhodge · 02-28-2011, 02:11 AM

Just replaced fuel pump and fuel relay. Relay was totally dead. When relay was replaced found there was power to the pump but the pump would die after about 30 seconds. Now that both have been replaced,the car runs well at idle without hesitation. Will hopefully give it a good run in a day or so. We are still in our wet season and the roads are a bit flooded with lots of pot holes.

Thanks everyone for your replies.

90red · 03-01-2011, 05:58 PM

Interesting story... looking forward to hearing if this fixed your problem!

sbhodge · 03-03-2011, 01:33 PM

Took it out on the highway a couple of times and it seems to be going well. The only thing I have noticed is that when I shift from Park to Drive it stays in 1st gear for a couple of seconds before shifting up to second. If I stop and shift to Neutral or Park before going into Drive it does the same thing. If I stop the car without taking it out of Drive and accelerate the car will take off in second gear.

I am sure that tiptronics always start in second gear in Drive (automatic mode) or am I wrong?