Hi, I my Volvo cranks but doesn't start any ideas on what it can be ?

Hi guys! I have the same problem, my volvo 1990 240 GL idles but dosent start. I have changed the fuel pump relay, tested the in tank fuel pump, it works. When i turn the ignition, i cannot hear the pumps going, neither the in-tank or the out-tank one. I have tested the ohms on the air mass meter and its good. I have changed the fuel filter. The main fuel pump works when bridged from the fuse panel, and the in tank pump works when bridged from the relay, and sends fuel to the injectors. I have tried to start the car while bridging the pump on the fuse pannel, still not running. I feel like i am running out of options at this point. Any input would be much appreciated. thank you!