adwarrior

I have a 1990 944 S2 Uk car. I'm having trouble with it restarting after being turned off for a short while e.g. if I pop in the petrol station to fill it up. When I get back in the car it fires into life without any problem and then dies out, the revs just drop, no coughing or spluttering or anything. I turn it over and nothing, again not firing at all. I can try starting it 3 or 4 times and nothing, then on the 5th of 6th attempt it fires up and runs normally. I have also had this happen one or two times while travelling along, all of the sudden it just dies. I pull over and same thing, try starting it 4 or 5 times and nothing, then it fires into life. Sometimes I have to give it pedal to get it going sometimes none at all. So as you can see I'm having trouble dtermining if it's fuel or electrics. Anyone have any experience of this or any clues as to what it may be?
Thanks in advance.

tifosiman

I'd be willing to bet it is the fuel pump relay. Buy another and see if that's it. May be worth keeping a spare in the glovebox...

Tifo

adwarrior

Thanks you're the second to suggest that. I'll give it a try. Do you know where it's located?

tifosiman

Take the top off the fuse-box that is under the hood. Flip the top over and there should be a diagram on the inside of it. The other relay to check would be the DME relay. Both are cheap.

Hope that helps!

Tifo

OZ951

I had a warm start problem with my car that was the result of the idle mixture screw being fully closed. That also lead to low idle speed, idle hunting and near stalls when stopping at lights etc. Opening the screw 1-2 turns fixed all that.