1996 7.4 mpi efi still no spark
 

im still working on the problem redid all the grounds replaced the moduel, coil , i started once and ran about 2 mins and quit and wont start now as usual , i have 11 volts to the coil and when cranking it goes to 9 volts is that enought to make it start any jhelp appericated thanks again james

no it isn't
You have that white big fuse on the starter motor? sometimes there is a bad connection inside, try hooking all positives directly without the fuse and try again. Why you replaced the module & coil?

i had them around ddint cost me anything no big fuse
 

no big fuse in starter i took it off long time ago can yoiu think of anything else by chance im at my wits end , thanks james

11 volts is very low. I would start with a new battery or charge that one up if it will charge. It should be hi 12's

Chris

9 v will not do it..
your starter could be getting ready to fail pulling to many amps drawing the volthage down. If I remember right you must have close to 12 v for the ECU..
You could wire 12 v direct from another source to your ECU and then start your motor. If it starts,, thats your problem.
On some hot rods I had with MSD ign box's, they had to have a certain voltage or they would not fire (period)

cool thankyou guys ill give that a try

i forgot to mention that the motor turns over very good it has two batteries the main doesnt turn the motor very good but with the switch on both it turns over very good but still has 9 volts at the coil , and both batteries at rest with the switch on both have 11 volts , does it still hvae a possiblaty battery problem causing no spark

The purple wire in the 10 pin harness may have some corrosion on it, not allowing full voltage. Power to turn on the ecm and the ignition comes from the key switch. As mentioned, try tapping into the purple wire with 12 volts and see if it cranks. If it does, pull apart the 10 pin plug and clean it.
Eddie

I would load test your batteries they should have 12+ volts each. You shouldnt have to use 2 batteries to crank the engine. I have been bit in the butt by the basics a few times. Just a thought. Randy

If you have one dead battery and one half good one and put the switch to both, the bad battery will be draining the good one especially during cranking. Pull the bad battery and just work with the one good one to start with.

Chris