I recently picked up an sc300 with a fresh 2jzgte swap. I know for a fact it is not a vacuume leak or IACV problem. I'm pretty sure it's a wiring issue but dont know where its at or where to start looking. Car starts and runs fine. When the car is in reverse and then put into drive it stalls when I shift passed Neutral. When the car is in drive and I shift to park it stalls also. It is a 1992 sc300 with an aristo swap and an automatic transmission. Ant info would help out big time. It is a very annoying problem. Thanks guys

 

Neutral safety switch maybe. The car shouldn't start in reverse at all.

 

Is there a certain way I should wire it and if so does anyone know how the wiring should go?

 

I hate to bump an old thread but I was wondering if you figured this out? My Gs400 will start in park but the cluster doesnt light up. As soon as put it in reverse the cluster comes on but if I put it back in park or neutral it shuts off. Same goes for drive. I start in neutral and go into drive no problem. If I shift back up to neutral it stalls.