is there spark to the plugs? is there fuel to the injectors? timing correct? check these things in order and deal with each one to find the answer. too many variables at this point, need to narrow it down
no it cant as, as long as the light isn't on
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.
four people can fit in a 240sx fastback cause there are only 4 seatbelts
loose exhaust
A 2000 Nissan Altima is an interference engine which has very tight tolerance. A slight misalignment can cause the pistons and valves to slam into each other.
Water in engine-head gasket most likely.
Numerous things could cause the Nissan Altima to stall. One such thing is the idle control valve, also the exhaust system could cause the engine to stall.
Start with the fuses. Check the fuel sending unit at the fuel tank, this is the most common part to cause a non working fuel gauge.
It could be the timing chain guides. 240sx engines are notorious for this. The timing chain guides are made of cheap plastic and they wear out and break off after time. When the engine is started, the pieces get kicked up from the bottom of the oil pan and make a racket for a while. I don't think is causes much harm, though.
something wrong on the engine get it chek for any codes
No, but it could cause the check engine light to illuminate.
Follow the wire from the defrost into the hatch. I found a 1992 240sx fastback which had a cut line.