RPMulli

So, I've owned the car for a couple months now and it has broken down not once but twice at the gas station. First time I had it flat bedded home. After some troubleshooting, i replaced the fuel pump, relay and fuel filter. She started right up.

Recently I've cleaned the MAF, Throttle body, reset the ECU, changed the oil, replaced the spark plugs, cleaned air filter, replaced fuel pump, replaced my IMS bearing, flushed tranny fluid, replaced carbon control valve.

Now, today the car started like any other day. I drove home for lunch and as i started it to leave it sort of struggled to reach operating idle. I thought nothing of it at the time. The the issue did stick in my mind prior to me reaching the gas station. After getting to the gas station, I filled the car up from just below a 1/4 tank. Went to start... Just cranking.... and cranking. No firing. Fail.

Out of every car I've owned, I never had two breakdowns. No matter what the mileage on the engine or age of the car.

I'm looking for some input on this particular problem. My thoughts are the ignition system since i just did decent maintenace to the fuel system. ALL input welcome. I need to be prepared so i can tackle this issue after work today in the gas station parking lot.

philooo

argh man that sucks... !

Did you manage to start it up at some point or you had to tow it again ?

I feel your pain as I am struggling to debug my cold start problem. yesterday problem again, this morning, no problem... I bet tomorrow it will be there again..

I have this durametric tool that contains tons of values, unfortunately without a good manual I can't do much with it.

Is there a place where the durametric values are explained ? or something to help troubleshouting with the durametric ?

RPMulli

I dont have a ECU reader like you. I'm going to attempt to revive this paper weight In a couple hours.

Dennis C

The durametric values should be available online.

r1de23, sorry to hear about your troubles. My 996 has been very reliable. I do have the occasional start where the engine cranks a little longer, but not often. Good luck with the fix!

RPMulli

BTW: the fuses are good.

ivangene

Sorry man

Do be surprised to find its something that you have already replaced (fuel pump) but like your initial thought, it better be something else

That said, IIRC ignition failure (ie electrical) throws a CEL

Good luck, these cars can be great....

RPMulli

Anyone have an details on the ignition switch under the dash? Possible culprit?

RPMulli

They are great when you can drive them.

Ahmet

Did you conclusively diagnose the first problem to be the fuel pump?

Van

Same gas station?

chsu74

Fuel filter? They should be replaced every 60K miles. You have a 99-01 right?

thirteeneast

+1

There are some photos on here at the end of one of the threads regarding ignition s/w

When the ignition antenna ring on my 5 series BMW failed it caused all sorts of weird and wonderful problems.

RPMulli

Different gas station.

RPMulli

Replaced it already, the last time it broke down.

RPMulli

I was actually shooting in the dark at the time (i knew little to nothing about the Porsche) I bench tested the fuel pump and it would not pump while submerged in fuel. So I "assume" it was the pump. The relay and fuel filter were replaced as well. My carbon control valve was howling after the fact, so i repalced that a few weeks after i "fixed" the first break down.

Throw out some more ideas for me, so i can hopefully get this thing started at the gas station.