Andres

If I am lucky (it allways happened in town) I have the enough inertia to drive the car to one side of the road. I get calm, I turn out the key, I wait for a second, I turn on the key... and it runs. It happened to me three times in 15 days. I bought the car one month ago, and it was checked by the Porsche car dealer of my hometown. Is it usual? Any of you suffered anyting similar? Thank you.

Bill Gregory

Did the dealer read the codes to see if any specific faults registered?

Dunasso

Did you buy it from the Porsche dealer, or a private owner? In either case, you may want to take it back to the dealer. Let them experience the problem first hand ( let them have it for a few days if needed) since it only happens intermittantly. Although it sounds electrical, it's anyones guess as to the source of the problem.

DaveK

The first thing I would do is replace the DME relay. Since it is needed for fuel and spark, it could well cause this problem. The fact that the car starts again and runs OK means it might not be that - but I think it's well worth ruling this out first. It's only a £20 / $20 fix.

It might also be worth giving a few more details. When it stops :

- Is it running fine before it stops?
- This is not stalling as you slow down - it's as you drive along at a constant speed?
- I assume ignition is still on, and all the warning lights are on?

John Boggiano

I think Dave's right about the DME relay.

nine64

try check the battery earth, it happen to a friend of my and it solve his promblem.
hope this help

Andres

Yes it was running well before stops. When the car stops the Warning light turns on. This morning hapened again when I was parking. But this time made a strange noise on the motor when I switch on the key. I stop. I tried again, and it runs.

Andres

What do you mean? That it could be disconnected?

nine64

no it was not disconnected, it's just need to be replace.
it happen randomly for him. sometime it's goes days with out it happen.
i am not sure but i will try to describe it. it should be on the side of the battery if you look under the trunk carpet you can see a wire that attach to the car body, i thinks that's the one.
hope this help.

Dunasso

Well, I am uncertain of the local laws in your area but it seems to me that if you bought the car one month ago and you've been experiencing this problems for fifteen days( which is approximately 1/2 month) then it would be in your best interest to take the car to the dealer to have it repaired properly. I am also sure that everyone here would be in agreement that there may possibly be something that the dealer would do for you sence you just purchased the car from them. On the other hand, if you bought the car from an individual then you may be on your own and then process of illimination may be the cheapest way out for you. In any case you should at least give the dealer a call, just to see what they can do for you if anything at all.

Richard Curtis

Buy a DME relay. Replace the old one with it. If the problem goes away, that was your problem. According to everything I've read about 964s, DME relays are a common cause for a car to stop running (and, sometimes, to restart easily). If this isn't your problem, then you've got a spare DME, which other 964 owners seem to recommend carrying in the car for that day when the relay DOES expire.

bhensarl

Check out the battery ground too, like Tenn suggested, since you're troubleshooting. It is located in the luggage compartment underneath the carpet. If you do a search you should be able to find a picture of it as I believe there was a post on here recently regarding the ground becoming oxidized and losing effectiveness.
Brian

Andres

The car is on the Porsche dealer. They changed the EDM, but when I went to pick up the car it hapened again.I begin to be worried about.

Glen

Fuel pump going bad acts this way, has happened to me twice.

jenskleis

Hola Andres! Bienvenido entre aficionados del 964!

It is too early to worry!

If the car suddenly stops, it could be that your idle microswitch needs cleaning. My car also suddenly stopped when it was warm, and I fixed the problem by simply cleaning the idle microswitch with some alcohol.

If you just bought the car, I strongly recommend that you hurry up and buy Adrian Streather's book about the 964. That will help you a lot in the future, as you get to know your car.

Actually, I will go to Madrid this weekend as I have a job interview there on Monday. If I'm lucky, we might be able to take our 964s for a spin sometime soon.

Take care and let us know what was wrong when you find out.