Very stumped on my car. There is no crank sensor below my distributor. Only thing I found is down below the passenger side lower engine case. It screws into the engine horizontally towards the torque converter and the wire runs to a upper intakemanifold mounted plug. Looks like something the dealer hooks into to check RPM. Plug wires go no where except to the screw in sensor. Very stumped as to why my injectors are not firing. Where is the crank sensor on my 89 Volvo 740 turbo wagon. Car just might be a later injection model system. Is there any way to pull engine codes?
Anyone know what's up?

Because you don't have a crank/rpm sensor. You have a hall sensor built into the distributor. That controls spark. You do have a radio suppressor relay that triggers the injectors. Normally near the coolant overflow tank. If there are 2 there. One is RSR the other radiator electric fan. They interchange. Swap them and see if it starts. And pulling codes on a 2.2 ignition is primitive. Just blinking lights you count. All covered below.

Look here: https://www.brickboard.com/FAQ/700-900/

Scroll down to drop down file lists. A ton of info.
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Post Back. That's whats makes this forum work.

Late posting back, but it was two things, radio suppression relay and the fuel pump relay. After reading so many post I just decided why not replace these two high mileage components.. I also found the positive battery terminal corroded into the wire insulation. I cut it back to some clean copper and all is good.

I'd highly recommend replacing, or at least renewing the heat sink paste, on the power stage/ign amplifier.