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Some more MPFI help! NEW PROBLEM! So i decided to swap out the OBD2 internals for OBD1 internals. Now the car doesn't even turn over. It'll start for a second, then automatically die. Even if i give it gas. It'll run for about a minute with the PM5 ecu. But won't run with the PM6 or PR4. Anyone...

So i just finished up my MPFI swap on my 90' Civic LX. The motor is a D16Y7 that i bought from a buddy that had the stock PM5 dual point manifold on it. So i did the MPFI swap on it. But i have ran into a problem. My computer is running in limp mode, and flashing a code 4 (crank sensor)...