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code 55 car still wont run?


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I have a 1987 z31 2+2. M/T, its all stock, it has sat for 3 years. i did actually have this car running a month ago, for one day. and it ran exelent! the next it start, but die shortly after (5 or 10 sec). ive probably got 90 man hours into diagnosis time in this space ship..... gone through and fixed every thing that the eccs unit blinked out. including fuel pump circuit,cylinder head temp sensor, fuel temperature circuit, ignition signal problem, and the TPS MAF ECCS unit change, distributer/cranksensor, even rolled it over to TDC just to check..... anyways the Z reads no monitored system faults....#55 in the ECCS.. so im lost ... car starts, and dies will not stay running! also checked entire fuel system, fuel pressure and even changed the pump. i am definiatly OPEN FOR ANY SUGGESTIONS... thanx

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