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Cranks good but not starting 200 1991

I tried, several times!
You evidently did not study all the posting from everyone enough times to grasp a picture in your mind or find a diagram showing the layout of how the components work with each other.
I could only write it down stuff so many ways and then it's up to the interpreter to ask lots of questions. Especially, when there is a dark spot somewhere in their thoughts.
I never read that you have or know how to use a voltmeter.
I guess you will tell us now?

It is still very possible that the Power Stage component is bad. We or I just hate to replace or spend the money on parts instead of tools that work on other future projects.
A voltmeter can fix dishwashers, electric lamps or even simple things like a flashlights.

So do you have spark from the coil by manually firing it or disconnected from the car or by using the normal key switch in the car. Two ways your choice.

Art has placed pictures to show you the middleman's layout. That LED light is about $5-7 at Walmart maybe even less and a Harbor Frieght meter is about the same. The LED will flash and is simpler for this test for you to troubleshoot with.

He is coming from the ICU side to see if it's trying to talk to the Power Stage Amplifier or relay.
I mention this as an add on, as he does not say, you have to crank the engine around for the blinks to happen.
We assume things and that word breaks down to it make an ASS out of U and ME.
Not everything gets written down, in one post of a chat forum. It's the nature of the beast!

I am sure you are going to find the problem, now that your are fully invested, parts wise! (:-)

Phil






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