I blew up the diagrams for you so you can see better.
Roy
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Tuesday, October 29th, 2019 AT 4:39 PM
DIRTY_95
MEMBER
12 POSTS
Yes, I have 12 volts to fuel pump and no voltage at a4 where EGR comes from computer.
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Saturday, November 2nd, 2019 AT 12:07 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
That should be 5 volts and comes from the ECM.
Can you check the map sensor gray wire and see if that has power?
Roy
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Saturday, November 2nd, 2019 AT 12:23 PM
DIRTY_95
MEMBER
12 POSTS
Yes 5 volts on grey wire on map sensor.
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Saturday, November 2nd, 2019 AT 12:31 PM
AL514
MECHANIC
4,795 POSTS
Are you getting a pulse with your test light on the purple/white wire at the distributor while cranking? It's the reference high signal to the ECM. Needed for injector pulse.
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Saturday, November 2nd, 2019 AT 12:31 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
You have a wiring issue. The gray wire at the map sensor is the same wire. There is an issue in the harness where they come together. I would check the harness carefully for any damage. You may have a break inside the harness.