I'm using an Express Van 411 (12212156 OS, low resolution crank) to control a C4 L98 engine. The thing is up and running great except one issue. When AC is requested, only one fan runs. The second fan kicks in (as normal) when coolant temp reaches 195. But by then AC head pressure is causing the compressor to go off line. Once the second fan does kick in, head pressure drops and compressor runs forever. Anyone have any idea how to make an AC request run both fans?