I have a tech 2 and a smaller Mac the obd2 port has power and ground but will not connect. Yes and relays. I can jump across the fuel pump relay to get it on it has 55# pressure. But no spark or fuel when cranking through, good compression too.
Nov 17, 2018 at 12:29 PM
ASEMASTER6371
✓ASE Certified Mechanic
52,796 POSTS
Okay, check for powers to the PCM. Make sure you have ignition and battery power.
I attached wire diagrams for you to view of the fuel system as well as the ignition system.
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