new motor not running

[garagelife]

put new motor in and cant seem to get it to run, dont know alot about 1989 rx-7, need help bad

[black rocket]

How about give us some more info...

swapped to/from which engine (yr) ECU compatibility, grounding, etc.

[garagelife]

the motor came out of a 90 and has been put into a 89, i found out that i had the plug wires wrong now it is running but has check engine lite on all the time is that going to hurt it ecu is 351 on both cars

[black rocket]

That's good.

Now as to ck engine lights...that maybe due to 20,000mile switch.

[garagelife]

ok im still learning is there a way to reset the ce