New member, new 944 owner.... Help please

[LarryPowell82]

I just picked up my first 944 a few weeks ago. it has been running great without issues until today. when I got home today and turned the key off everything turned off EXCEPT the engine. radio, lights, fans everything turned off and the engine still ran. someone please help.

Larry

[zedsn]

I would suspect the ignition switch or the electronic piece that is screwed into the back of the igniiton switch.

[LarryPowell82]

so if the engine is running and the key is out. i pull the wires connected to the ignition switch should the engine then turn off?

[mytrplseven]

Exactly right. Pull the connector off the back and the problem should go away. A replacement ignition switch may be in your future. BTW, welcome to the adventure.

[LarryPowell82]

thanks mytrplseven, unfortunately the problem did not go away when I pulled the wires from the ignition switch. still need help

[zedsn]

seems to me that you have 12 volts coming from some where that is preventing your car from turning off. This is not a common problem and you might want to seek professional help. I am not sure but you could try to put an on/ off switch on the positive coil wire side under the hood just to get your car to shut off for now.

[Tom944]

My guess would be that pin 3 on the DME relay is at 12v all the time. Could be a fault in the relay. This pin should only be at 12v when the key is on (from schematic).

[LarryPowell82]

Ok update, I got a new relay in today. no luck any other ideas out there?? if not I am going to get harness and re-wire the whole thing.

[TibetanT]

It depends.

First, what year is your 944? If it is before 1987, I probably will be guessing.

If it is a 1987 or later car, I may give you some pointers since I traced a very similar problem to BAD wiring coming from the fuse box blocks. Do you have any records of maintenance done prior?

Also, were are you located?

[LarryPowell82]

its a 1983 and I am in Phoenix