You're not going to hear the fuel pump while cranking if that's what you're asking. You should only hear the pump for about a half second with the key in the "on" position before you try to turn the key far enough to crank the engine.

 

 

Beats me how you think you can hear the fuel pump while you're cranking the engine. Also how you can hear an injector fire either. I have manually fired them while activating them when cleaning them removed from the engine, mounted in a vise. The clicking heard there is pretty faint, no way you'd hear them while in the engine and cranking the starter

 

 

 

I never called you a LIAR (that's the correct spelling) Maybe you should work on sentence composition next time you post to let the reader better understand what you're describing. Wasn't till this third time you got it right. I have a van too but it doesn't have a fuel pump under the seat, only one in the tank. And you can barely hear it when you turn the key "ON". You cannot hear any injectors clicking either when you do this. Good luck with your problem.

 

 

Words mean things. You asked the question twice and nobody but I answered you. Reread what you posted. You clearly implied that you were not hearing these noises while cranking the engine. I didn't write this, you did, TWICE ! If you want an answer, take the time to clearly describe the problem and you won't have people asking you to clarify what you're asking. And don't call people LIERS if you don't want to be criticized for your grammar and spelling.

 

I'd like a little clarification on your description:

"Here is my problem : if I try starting with + and - attatched (normal) it just cranks , I get no fuel pump noise or injector pulse ......
But ......
If I hook up a charger to both negative and postive and take either one of the battery cables off while leaving one attatched , with charger still atttatched to both negative and positive , then it will get injector pulse and fuel pump a pumping ??? It's got me lost ... please help lol"

Are you saying that just applying the battery charger power to the battery cables, with one of them disconnected from the battery, you get "injector pulse" and "fuel pump a pumping"? I assume this is not making any attempts to crank the engine, since there is not battery connection, and the charger certainly can't produce enough power to do that? The fuel pump runs for a couple of seconds when you turn the key to the ON position to pressurize the fuel rail, and should not run again until you try to crank the engine. Also, the fuel injectors would not run when the engine isn't turning, such as when cranking or running. Under those conditions, you will not hear them pulsing because of all the other noises. The exception to this is if you have one of the old throttle body injection systems where they're hard mounted on top of a gutted carburetor; you might be able to hear those running, but again, only when the engine is turning. All the new systems where the injectors are mounted on the intake manifold have O-rings on both ends, so they're pretty well isolated.

I suggest that what you're hearing is the system trying to operate on the half-wave rectified and unfiltered power from the battery charger. If you look at the output of most battery chargers on a scope, it's usually a full-wave rectified sine wave, and at worst, on the cheapest chargers, a half-wave rectified sine wave. This can make most motors sound like they're pulsing, and I'm not sure what this can do to the operation of the EEC; it could act like you're trying to key-on/off at 60 Hz, making the noises you're hearing. When you re-connect the battery with the charger connected, it should act like a large capacitor that can smooth out the pulses of the charger, and therefore, any motor or other devices it's powering.

If you want to test your system with another source of power, try to find one with filtered output, like maybe from a 500W PC power supply. Those should supply power that "looks" more like a battery.

And I do appreciate those who choose to show respect to other users of English by their use of proper grammar when writing. I think far too many people today ignore this, and it makes us, as a country, appear illiterate.