I have a 91 maxima 5 speed, and when I try to turn off the car it just keeps running. All the accessories turn off like my radio and AC but The engine keeps on going just like the keyu is in. Does anyone have any ideas on what it could be?

 

Ignition switch problem?

 

No I checked it it works fine.

 

How did you check it? For some reason, the power to the ignition system is staying on. Also apparently the power to the fuel pump is staying on also. These two facts seem to support something that controls both. Unless you mean it's dieseling(running but very rough)

 

No not dieseling it runs great just cant shut off, I checked the switch with a muti meter in all positions with the key and it checked out fine. Do these cars have a relay or some sort of control box for the ignition?

 

Also if I disconect the positive from the battery it shuts off and when I reconnect it its back to normall untill I turn it back on and then the same.

 

That doesn't tell me anything about if the ign switch is okay. If you cut the power, of course the engine is going to stop.

If not the switch, maybe the ign relay is sticking? Try swapping it with another one of the same color.

 

which is the ign relay? sorry I dont have the repair manual. I just got the car.

 

Bring the car over tomorrow and and I'll take a look
Assuming you can get it to shut off and restart.
or give me a call/IM tonight and I'll see if I can come over

 

I'd wonder about a worn out ignition switch. Or a short powering up the ignition wires. Nothing else electrical running besides the engine? i.e. radiator fans, interior fans, etc? Start looking at all the wires for shorts-engine to ignition switch

 

I removed the bottom blue relay from the relays by the fuse panel under the driver dash, and it works fine now it shuts off and everything works . What does that relay do?

 

thats the ign relay
according to the haynes manual theres a second ign relay in the driver side kickpanel, next to where the dead pedal would be

 

scanned it in to help, i dont know if just leaving out the ign relay you took out will hurt your car at all...