No injector signal - 1987 Chrysler Conquest

How do you know there is no signal to injectors? If you verified this is true, then you may have a driver circuit problem in the ECM. If not and you have the injectors being pulled to ground but they are not firing, you could have plugged injectors.

DID YOU CHECK THE SIGNAL TO THE INJECTORS? WHEN YOU SPRAY CARB.CLEANER AT THE T.B. THE CAR STARS?
IF YOU HAVE GOOD INJECTOR SIGNAL, PROBLABLY YOU HAVE DEFECTIVE INJECTORS. REMOVE LITTLE BIT UP INJECTORS RAIL AND LEAVE IT EVERYTHING CONNECTED TRY TO STARTER IT AND CHECK IF THE INJECTORS SPRAY IT.-------- IF YOU DO NO HAVE INJECTOR SIGNAL CHECK THE CONNECTOR WIRES -SWITCH ON COMPUTER SIGNAL AT ONE SIDE,,,,,AND GROUND AT THE OTHER SIDE

make, model, year? use obdii scanner (1996 & later) to get trouble code if there is? (older model may have manual procedure for this, search). typically the signal/s comes from the computer (ecm, or pcm whichever the mfr. of the vehicle calls it). check fuses, & relays (if any) to the computer. some design, the cam sensor provides signal to the computer to give signal to the injectors..

It could be that your crank sensor is bad or your ecm. your crank sensor sends a small amount of voltage to your computer telling it that you are trying to start your engine the computer in turn sends a signal to the injectors telling them to pulsate because you are trying to start the engine but if your crank sensor is bad and sends no voltage signal to your computer your computer doesn't know you are trying to start your engine therefore it doesn't send the signal to your injectors telling them to pulsate. If your crank sensor is sending a signal to your computer then your computer is not sending the signal to your injectors more likely a grounding issue through the computer I have seen this before let me know how it goes.

I doubt it.
The injectors get power from a fused circuit when the key is on.
Then the engine computer grounds each injector when it wants the injector to open.
You would first need to know if the injectors have power, then if they are getting a ground signal from the computer when the engine is cranked.

camshaft sensor or crankshaft sensor. do you have any spark?

Interesting. The ignition module sends a signal to the computer which grounds the injectors. The injector driver in the computer could have failed. Its possible one of the injectors shorted out and cooked the driver.
You are sure you are getting power to the injectors, but no ground signal ?

check computer banks

There is a module to control the injector valve o and off. If it doesn't give a signal to turn on the injectors then injector is not working. The electrical connector from your injector is where the signal from the module going in.

if voltage is on both sides of the injector your computer is bad if only on one side try a crankshaft position sensor its very common with these cars.