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EZK Power Stage? 700

uid 18083's pic
posted by  lucid on  Sat Sep 17 14:40 CST 2005
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

I don't know of any wire (blue or other) that goes from coil to FI ecu.

The injectors stop because with the wire off coil +, there is no spark, so no "spark OK" signal/pulses to FI ecu.

I don't know anything about a "portable ignition box". Or how it could tell you "if everything with the FI side was good".

"the ignition box on drivers side inner fender behind air filter"
That sounds like the "power stage" that fires the coil -- or should.

"btw i wonder if the crank position sensor could give a good enough signal to kick the injectos but no spark?"

CPS doesn't signal the FI ecu in any way. It goes to the ignition system, which sends timing pulses to the FI ecu for injector grounding, etc.
Those pulses must be getting to the FI if you're getting fuel.
The problem is that the "final step" (coil pulsing) is failing.

But this is just guessing based on later systems that I know better.
Do you know which Ignition and FI systems you have?
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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