Reposting this for turboaddict over on TD. We're trying to get his CSX running again and he's ran into a problem, here's his original post:
alright so after getting my car running again after a cracked head (87 csx) i was having problems with weak erratic spark. changed hep coil etc. to no avail switched computers over and it was happy for awhile then would die. the only change i have made to the car is a one piece manifold with the stock vnt injectors. i switched the stock 2 piece harness over to the 1 piece intake. well noticing that both computers reek of burnt electrical i opened them up and found the diode connected to terminal #7 of the blue connector on the logic module was fried on both lcms.this is listed as power ground source thru fuel rail bolt. what could cause this? i have the ground that #7 goes to grounded thru the fuel rail bolt. and a ground from the back of the intake to the fire wall? not a good enough ground or what? HELP!! i need to know what happened before i can replace the lm.
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