Hello all, having some issues with my '83 240, running a B23. Car was running fine previous to this. Just started up the other day, put it into reverse, began backing up, and it died. Would not start again.

Here are the symptoms:
- Will not start. Turns over and over but does not catch, and I don't hear it even trying to.

My troubleshooting steps:
1. Checked fuel pumps - jumpered them and the both sound fine, no whine, just a good solid whir. Tried cranking with pumps jumped, no change.

2. Checked intake piping - no vac leaks that I can see.

3. Checked wiring - all connectors firmly in place, all grounds connected and tight (block to batt, intake to block, system grounds to intake, all good). The wiring harness was rebuilt by myself over 3k mi ago with new Volvo wires, everything that was degraded was replaced completely to the connectors).

4. Checked for spark at coil, distributor, and plugs, all good.

5. Pulled plugs - no fouling, gaps good, spark fine outside of the block.

6. Let the block dry out for 4 hours with the plugs out, reinstalled. No change.

7. Pulled the connector off the Coolant Temp Sender (to the ECU). Noticed that one of the pins was pushed back in the connector. Realigned and reconnected by pressing on the wires to ensure complete contact. No change.

8. Tried starting with starting fluid, however, left the injectors connected, so possibly the engine flooded. Did not get any start on starting fluid.

The only thing I can think of is that the temp sender has failed and is flooding the motor. The only other caveat is that I filled up with a full tank prior to parking the car, it has not run since. However, I've never seen bad gas that will not ignite AT ALL. I get a good smell of gasoline while I had the plugs removed.

Any thoughts or troubleshooting tips would be appreciated. I'm going to go down and try starting now with started fluid and injectors disconnected to see if I get anything.

-Phil