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Injector pulse is driven by the computer from the signal it receives from the ignition module. Check to see if there is spark because that could also be an indicator of a failed module or distributor component but having spark does not eliminate the module. It does eliminate the pole piece. If there is no spark and no injection pulse, you have to check for voltage to the B+ side of the coil. If it is there, remove and repair the distributor. If it is not there, you have to trace to see for a breakage, loose connection, bad ignition switch etc.
If is were a betting man, I'd say it's either the injector fuse or the ignition module.
Lost injector pulse. First injector power is supplied by (IGN+) or fues block ,The injector are multi-potr not individual they are fired together,not individually, Now if you lost injection pulse youll need to inspect the Distributor,the pick up is highly suspectable to terminal corrosion, it corrodes easily,so be ready to replace the pick up with a module, (this is spark I know we are on Injector), Do you have spark, then leave this alone, Test injector pulse not at the injector because again its bank fire or group fired You ll need to test thes the connector harness connector,of the injectors.As long as there is spark you should have injector pulse from the injector sub harness connector make your way to the ECM , The ECM controls the energizing of the injector with a transitor or quad driver,they are synchronized to primary ignition . Here a solution if no spark correct for spark. Its either a Distributor pick up failure with ICM module.Do this only is you have no spark.If you have spark and no Injector ,replace ECM
Loss of injection pulses usually means a loss of an engine timing signal or even the security pack preventing the vehicle from starting.
You need to check all the timing signals, crank angle sensors, cam angle sensors etc and ensure that any security is disabled or turned off.
Check for spark, if you have spark but not injection pulses, then its a timing signal issue. If you dont have spark or injection pulses, also check the ECU (the cars computer) although I do not know of any issues with this make and model.
if you have NO spark NO injection pulse suspect a Camshaft Position Sensor(CMP), that is the sensor that tells the computer your ignition firing and timing and pulse width for your injectors once it has received a signal from your Crankshaft Position Sensor (CKP) the 2 sensors work together to achieve the correct combination for start up
If you are getting spark and the engine tries to run on starter fluid, then you have lost fuel.
Check that you are getting injection pulses at the injectors and check the fuel pressure at the fuel rail at the injectors.
Check for power to the fuel pump when the engine is cranking, If you get no power to the fuel pump when cranking the engine, check fuses and relays.
If the pump is running but you have no fuel pressure, check the fuel filter and fuel pressure regulator and replace any that are faulty.
If the injection pulses are missing, check the supply relay which supplies power to the injectors first ( the injectors are earthed by the ECU) Disconnect one of the injector plugs and using a test light (buy one from a auto parts store) clip the end to a good earth on the vehicle body, switch the ignition on but dont start the engine, then probe the two connections in the injector plug. One of these connections should be active all the time with the ignition switched on. If it is, you may have a sensor failure (crank sensor etc), if it is not, check fuses and supply relays.
A word of warning, the wiring you are dealing with is connected directly to the engine control, if you make a mistake, you can cause irreparable damage so if you have any doubts, take the vehicle to a professional..
DO YOU HAVE 12 VOLTS ON INJECTOR WIRE ON ONE SIDE WITH KEY ON? IF SO ARE YOU GETTING SPARK? IF YOU HAVE NEITHER YOU MAY NEED A NEW CRANK SENSOR. VERY COMMON ON THIS ENGINE WHEN THERE IS A LOSS OF SPARK AND INJECTOR PULSE. INJECTOR PULSE(GROUND SIDE)IS CONTROLLED BY THE COMPUTER. IF YOU HAVE SPARK BUT NO INJECTOR PULSE AND 12 VOLTS ON INJECTOR FEED WIRE YOU MAY HAVE A FAUTY ECM(ENGINE COMPUTER)
you need to see if you have spark and check all fuses and see if you have fuel pressure and injector pulse if no spark and no injector pulse suspect crank sensor or ignition control module if no fuel pressure check fuses then relays and then suspect pump
remove the coil pack and look at bottom of it if it shows any cracks coil is bad very common on these vans if you have a noid light check for injector pulse on #4 if you have pulse and good blue spark most likely the injector is bad you have to remove upper plenum to get injectors out let me know how you make out
you need to start somewhere. get hold of a scanner and see if car has a crank signal. the crank signal supplies refrence for both base for ignition and injection pulse. if it has injector pulse and no spark, look at the ignition module/ coils but if has neither look at the crank sensor or harness to the module