Where is the computer in a 1990 Nissan 240sx?
The Electronic Control Unit (ECU) is located in the Right Front kick panel inside the car pull out the kick panel to get to it
Yes the ecu will work. First disconnect the battery and connect the new one then reconnect the batter. Start up the 240sx and it should work it not it needs to be diagnoste goggle 1990 240sx ECU CODES FOLLOW THE STEPS AND THAT SHOULD WORK I know cause I'm using a 1992 ECU FROM Nissan Stanza. I was told it's alittle advanced on the horse power side and idle moves quicker.
Is there a difference wwire harness for 1989 Nissan 240sx se vs 1990 Nissan 240sx is it possible to use 1989 power accessories and use them in 1990?
From 1989-1994 the 240sx were all the same, however I found out the hard way that some of the parts from different trim models are not 100% compatable. (i.e. parts from the coupe are not direct replacements for the hatchback) but if you are using parts from an 90 hatch with power windows/locks and trying to put them in an 89, the parts SHOULD fit w/o much trouble.