There's a TON of stuff you need to do before condemning the ECM,
Check ALL sensor powers and grounds, check to verify all sensor inputs are working.
Watch this video before considering.

https://www.youtube.com/watch?v=hJQ6qnhTgdg

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.