993 stalls minutes after starting

I just bought a '94 993 which has done 98000 km (~60000 miles) and have discovered a fault whereby the engine dies after driving for a couple of minutes (as if no fuel were being fed to the engine).

After attempting to restart for a couple of minutes (several retries where the engine does not fire at all), it does eventually start again. It doesn't seem to be a problem after the engine has warmed up and it only happens ONCE on any one journey.

Any suggestions ? I'm having it looked at in
a week or two.

Thanks in advance

Richard

94 993???? didnt know they made em.. maybe 95??

Just wondering

I think they may have been available in Europe in 94. Most likely a "95" sold early. As far as your question, does it have records and when was the fuel filter changed last.

[This message has been edited by 89911 (edited 07-11-2001).]

The 993 was introduced in Europe as a 94 model. The US got it as a 95 model.

The early 993 had a fault where the car would stall coming down to idle on occasion. The car will start right up again and run fine. My understanding from a friend at Porsche is there is no simple fix for the problem on the early car, although it was addressed by the factory midway through the first model year. It has something to do with the electronics. A black 95 993 cabriolet with 10k miles that I almost bought last summer had the problem, but neither of the 95 coupes I owned had it. It has to do with the idle dipping too far down coming off of revs and stalling the motor. I suppose replacing a bunch of expensive components, including the computer, would fix it.

Vic
88 Carrera

Thanks for the speedy response, I'm actually the 3rd owner of a car originally bought in Germany.

My gut feeling is that it's not the design fault you speak of because the car does take considerable effort to restart (a minute or 2 with cars lining up behind - embarrassing).

The dealer I got it from said he couldn't start it at all because of a fault with the UK fitted ('Meta System') immobiliser which he had fixed (a dry solder joint); I'm wondering whether it's maybe the same problem

Any ideas of pricing for possible upgrade to the computer or fuel delivery system ?

I'll get the fuel filter checked and just monitor it for the time being. It has happened 3 times in 1 month of ownership.

Thanks again

Richard

[This message has been edited by rzwood (edited 07-12-2001).]

[This message has been edited by rzwood (edited 07-12-2001).]

forget the 993, get an SC, my car starts all the time, no problems ever

Richard:

You say the fault is intermittant and seems to happen when the car is cold ... can you tell me, when you start the car every time, does it usually catch the first time you turn the key?

The 993 is a much different car from the 930, but I had an 1987 930 which became difficult to start; it would usually catch on the second try and once in a while would just die completely. It got to the point where if you keyed the engine 10 times in a row, it would start maybe three or four times. It turned out to be an intermittant grounding problem to the fuel pump relay. When I grounded the fuel pump relay independently, the car started 10 times out of 10 and the stalling disappeared.

I would think if there was an immobilizer problem it would be impossible to get the car to start at all, but ground problems can be a little weirder. But the stalling and hard starting makes me think of the fuel pump.

Vic
88 Carrera

Richard:

Your best bet is to post this on http://forums.rennlist.com in the 993 BBS section. There are a few 94 993 owners in the UK who might be able to help you (or recommend a place to bring it).

Bar

The car starts 1st time every time, it's only after a couple of minutes running that the problem occurs. I've even been stationary with the car idling and then the engine has just stopped. Restarting took about 7 or 8 goes, with no firing at all. The 1st time it fires it starts which makes me think 'fuel'

Check your DME/fuel pump relay--It gives its location on the fuse box cover. If the number on it starts w/ 944 instead of 993, try replacing it. Dealer told me thats the first thing they do with symptoms like your car and mine. Porsche put out a bulletin that all 944. relays should be replaced w/ the 993. relays.

Thanks, I'll get it checked. Bit strange
having a 944 fuel pump relay in a 993 ??


[This message has been edited by rzwood (edited 07-18-2001).]

Had the same problem with my C2. It was the DME relay. It does indeed have a 944 prefix on the top. Mine liked to die at speed on the Expressway. Changed the unit and it never occurred again.