PLEASE: Help with this; If I D/C the Brn/Blk wire at the heater box (usually for timing) the car will start. When I put it back together it runs with a little miss. I can't start the car with the Blk/Brn wire connected. I've replaced the MAF Power Module, ECM, PROM, ESC Module....I do get a code 33 and 42, still.

Stan