88 engine 89 body and harness. injectors and dist. have different plugs at harness so I used those 2 parts now timing is retarted even with jumper wire in place still seems to advance and retard????!!! ohhh this one is got me wondering if the dist. is that different?? diag. port gives codes 24 and 51 air temp and a/c. why will it show a code and not lock out ecu from controlling timing??
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