Datsun / Nissan 300 ZX ECU Up for sale is a Working, in excellent condition 1985 Nissan 300 ZX Engine fuel / engine control module. Part number-- A18-632 661 85 300ZX Non turbo Automatic Federal emission Z31-VG30E 23710-01P70 25 Unit , - This removed from a recent crash damaged car and COMES WITH A 30 DAY functionality warranty!It is the Buyers responsibility to verify if this is right for their car. As you probably know, this is a pretty hard one to find at a reasonable price. As always your best bet is to match the part number to the one on your original ECU. These units can still be purchased brand new, but at a cost of over $1000, get yourself a bargain here. These are rather hard units to find used at any price much less as fair as this. These are usually fairly reliable, however can easily be damaged by wiring faults or voltage spikes (caused by a faulty alternator) simply old age, Water damage with these units is also possible! A faulty ECU can cause problems ranging from a bad idle control circuit to random no injector pulse signal (causes no start or random cut outs) & many others.