I have a 1995 sc400. A friend replaced the engine for me. I bought an engine (with harness) and transmission out of a 1993 sc400. Having some trouble getting it operational. It will start and run if you hold down the gas pedal, or use starting fluid. Is anything different on the 1993 engine that would prevent this from working? It plugged right into all the computers without a problem. Going to try a different idle air control valve and MAF that I have off of a ls400 tomorrow. Any advice is appreciated. Thanks