This is really wierd. Have 87 Volvo 240 DL, yesterday after driving several places, at one stop wouldn't start. Cranks but won't run. I had already replaced in-tank and main fuel pump, fuel pressure regulator and fuel relay. New plugs, wires, distributor cap as well. So get out 89 Volvo 240 do a couple of runs and bam it too won't start with the very same symptom, cranks won't run. What are the odds of both cars having the same problem within hours of each other? Any ideas?

SOURCE: can you damage valves on 89 volvo 240 dl by

No, you are fine. it wont damage the valves.

SOURCE: 1988 volvo 740 gle non-turbo loud fuel pump

Have you tried replacing the fuel filter? It is located under the cars center on the left side ..

You will find it alongside the main high pressure fuel pump on a metal support plate held up with 3 bolts.
Remove the 3 bolts with a 10mm socket wrench to lower the plate. Place a catch pan below the filter to catch any leaking fuel.
Be careful not to get fuel in you eyes or running down your arms. Remove the 2 bolts holding the banjo fuel pipe connections to the filter.
Note the direction of the filter.
Loosen the clamp holding the filter to the support plate and slide out the old filter.
Install the new filter in the same direction as the old one and use new copper sealing washers on the banjo connections.

SOURCE: Volvo 740 GLE will start and stay running for

replace the fuel filter and fuel pump relay.

SOURCE: 89 volvo 240 dl when i put the car into gear i hear a clinking

need more info. I've had a few 240's come in that made noise when putting into gear. It was more of a KLUNK, then a constant rattle/buzz type of noise.
I turned out to be a combination of two noises, that were related. The motor mounts were shot and the exhaust heat shield above the rear muffler, was loose.
It seems that the broken mounts allowed excess exhaust pipe/muffler movement, which in turn came in contact with the loose heat shield. This was the KLUNK and the RATTLE.

SOURCE: No power to injectors on 1984 Volvo 240 DL New wiring harness

ok you must see what is missing. an injector requires 12volts to operate. the 12+ should be constant when key on and engine on or off,and the ground pulses. check both ways and see whats not there. if you have no pulse then ecm,cam sensor, or wiring faulty. is power+ is gone, then you have wiring trouble wich is the easier soulution. check and let us know