Q: I just changed out my 2.0 to a 2.2 from a 1990 cavalier.

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I pulled a running engine, engine wiring harness still attached with the computer. The harness plugged right into my firewall. I can crank the engine, but I'm not getting spark, and the fuel pump won't kick on. Everything else seems to be working just fine. What do I need to do to get spark and gas? Please help 😆

My car has 109000 miles.
My car has an automatic transmission.

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