my ecs is blinking error code 73 which is Ignition pulse system anyone have any ideas as to what may cause this also my ecs light comes on while driving i then let up on gas it will shut off then please i really would like to figure this out

 

thanks

 

also my speedometer is really slow to move up and down any ideas?

I have an 86 GL wagon. If I turn the ignition to the accessory mode then my ECU also flashes the 73 code. According to the Haynes manual, all that means is that you have a GL 4x4 wagon from Cali. I don't have the Haynes manual in front of me now, so I don't recall the exact description. All the code is really telling you is a description of your car. If your ECS light comes on, then look at what code comes up while your ECS light is on. If it's intermittent then pull over to the side of the road when the light is on without turning off the car to check the code. Anyway, my GL was having the ECS come on intermittently and I discovered that the 73 code is just a designation of the car. Good luck.