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1985 NISSAN 200SX Engine Computer ECU A18-640 478
Datsun / Nissan 200 SX ECU
Up for sale is a Working, in excellent condition 1985 Datsun / Nissan 200 SX Engine fuel / engine control module. Part number - See the top or large photo. , This ECU came out of a 85 with a non turbo engine & a manual transmission, My list shows this fits some 86 models too. As always your best bet is to match the part number to the one on your original ECU. These units have been NLA for quite a while now, and are not at all easy to find, 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). 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.