heater core problem on 2003 Mitsubishi Diamante

if the pipe or faulty
o-ring leaks from my heater core...what would it affect to make the neutral light flash alternately while im driving? and the car has poor acceleration...the car drives but i cant hear the transmission shift through each gear like it should. plse help

Asked by for the 2003 Mitsubishi Diamante
1 answer
probably not related unless the heater core is leaking fluid onto neutral saftey swith or related wiring and causing interference,sounds like a job for a qualifyed shop