I have a 1993 Civic, D15B7 w/ auto tranny that had been sitting on our parking lot since last summer. This car was towed in with a no start after replaced reman distributor assy and new spark plugs and wires by our shop. My service writer think the reman dist assy is defective then he replaced 2nd reman dist assy, the engine won't fire up. Then he informed a customer that he think it is PGM-FI relay. Customer declined the repairs, she think we did something wrong with her car but my service writer asked me to diagnose no start condition ( I was told that my mechanic replaced 2nd dist assy when I was on dayoff), investigated and pinpoint ECM ( engine control module ) after discovered loose negative battery cable. Obviously fried ECM, informed a service writer. He notified and questioned a customer, she said something new JVC stereo installed recent by her boyfriend that may explained he disconnect a battery cable and seem forget to tighten a negative cable end. She surrendered her car, sold it to my shop. Yesterday, we got an used ECM from salvage yard, I picked it up and noticed yellow mark " 94 Civic VETC" on ECM. I asked him Is this ECM right part? He says yes. I installed it, the engine fired up and runs ok but the CHECK ENGINE light come on , pull code 21 ABS. This car doesn't have ABS. Wrong ECM. He will het another ECM. Maybe next week. We want to sell it after correct ECM.