I bought a 95 sc400. Got it at a good price. Drove the car for about a month. Then it would not start. Turned over just would not fire. Removed the aftermarket alarm and disarmed the factory. Couldn't get it to fire so I left it all winter. Now that spring is here I went through the wiring under the dash and soldered all the old splices and found a wire with a cut in it and soldered it also. Turn the key and she fired up. I was happy! Then I got out of the car and went to the front and it sputtered to a stop. !
Now it will fire up but stops after a couple of seconds. Will not keep running. I tried ecu, igniters, coil, and crank sensor. I also did the fuel pump ecu mod.Still doing the same thing. Get codes 14 and 15 now. When it would not start never had a code. Does anyone know what to try next? Any help would be appreciated. Thank you

 

You might have cut a ground and you missed soldering it. codes 14 and 15 are ignitor signals. If you didn't know, you have 2 coils.

 

Thanks for the advise and you are right I didn't solder the ground under the dash. I will try that and post if it works.

 

Well I went under the dash again today and soldered the green ground wire and still have the same problem starts and stall out right away. Codes 14 and 15. Still looking for suggestions.