Injectors not pulsating. I have constant pos. at the injector but no ground. I have replaced the ignition module thats mounted on the distrib, and i have replaced the pick up or ckp in the distrib. I don't know what else to do besides the computer. If u have any ideas i would appreciate it.
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The voltage for fuel injectors go hot with the key on. The computer switches the ground on and off, check voltage and ground.
If the computer doesn't ground the fuel injectors, you'll have voltage on both legs.
If computer doesn't see rpm signal, it won't ground the fuel injectors. If no rpm signal check the crank sensor and ignition module, plus wiring circuits. Don't replace anything unless your testing points in that direction.
It's a fused circuit, so check the fuse, probably under hood, labeled injector. A shorted injector can shut down the injector drive circuit, so pull off all injector connectors, make sure fuse is good, then check for power to the injectors. Injector circuit should nave hot wire anytime key is on. Has constant voltage to injectors. When the computer internally grounds the injector ground wire, the injector will pulse.
Car not starting or turning over indicates towards multiple possibilities.
It can be issue with battery or weak battery. But if battery checks out ok, then
it can be starter issue or faulty alternator or problem with low fuel pressure
or no spark at spark plugs due to dirty spark plugs or faulty
ignition coil or injectors getting cracked or dirty and needs to be cleaned.
To confirm the problem, the basic troubleshooting is required.
Click this link below and follow the troubleshooting:------
When you turn on the ignition, power is provided to one side of the injectors. When you start the car and it is running, the computer grounds the other side of the injectors. The length of time that the computer grounds the injector is known as the pulse width. This "time" determines how much fuel is released from the injector for any particular engine cycle.
At injector's, need to check if you have ground pulsation, to check, connect test light on pos (+) battery terminal, now your set to check ground, at injector harness, probe wire's, while some one cranks engine, look for pulsation, if you don't have pulsation, it will need a computer, injector pulsation is control by the computer, if no pulsation, then no fuel can get into cylinder.
E.C.M control injector pulsation, with key on check for voltage at injector harness, then reverse test light at battery and check for ground at the other wire at injector harness, crank engine ground should have pulsation if none bad E.C.M,good luck,hope this was very helpful.
if you sqirt a little gas or starting fluid in tthe air intake and it starts for a few seconds then the igjition is probably ok since it was stored so long you could have lots of water int the gas tank or bad gas... you could have a clogged fuel filter or bad fuel pump . you can have a pressure/volume test done on the fuel pump.. that will also test the fuse and fuel filter .. wow only 54k miles ..
If hall effect switch was bad you wouldn't get any spark.What year 2.5L is this?Is this a 2 injector Throttle Body? The pink wire on top of injectors comes thru a 20Amp fuse controlled by the Ignition switch you should have battery voltage with key on The dark green and dark blue wires come from the pcm which are called injector drivers the drivers supply a pulsating ground if you crank the engine with a test light between either pink/dk green or pink/dk blue test light should flash dimmlythat would mean injectors are being driven but there isn't any fuel at the injector or the injectors are bad no pulse means either a bad computer ( which these drivers are known for going bad)or the computer isn't being commanded to fire the injectors.
Inside the distributor and on the ignition module (7 pin) one of the wires to the camshaft pick-up had pushed out of the connector when I hooked up the new module. I reinserted the wire and problem was solved.