Desperate for Help need this car running asap

[BreatheLife21]

Ok well i swapped my motor and transmission out of a wrecked 97 240 into a 96 did all the 5 speed swap things got a 96 ecu for it and it wont start no spark or fuel i took the car to a shop after tryin for weeks to get it running they said if they take the ground off the fuel pump relay and ground it manuely the fuel pump will kick on. they think its something to do with the ecu. the mechanic called a nissan dealership and they said each ecu is programed for the specific motor and i need to "flash the Ecu" for my motor. i have tried a 96 auto ecu and a 97 5 speed ecu with the same result. the mechanic thinks the ecu isnt grounding out the system and hence no spark or fuel.

Help Pls

[schanne]

What was the original ecu code for that motor?Once you find that out, get the same ecu....

[BreatheLife21]

i got one like that thats the 97 ecu i have

[r3v_v3ng3]

Ok well i swapped my motor and transmission out of a wrecked 97 240 into a 96 did all the 5 speed swap things got a 96 ecu for it and it wont start no spark or fuel i took the car to a shop after tryin for weeks to get it running they said if they take the ground off the fuel pump relay and ground it manuely the fuel pump will kick on. they think its something to do with the ecu. the mechanic called a nissan dealership and they said each ecu is programed for the specific motor and i need to "flash the Ecu" for my motor. i have tried a 96 auto ecu and a 97 5 speed ecu with the same result. the mechanic thinks the ecu isnt grounding out the system and hence no spark or fuel.

Help Pls

so when he manually grounds the fuel pump relay, does the car starts?

[BreatheLife21]

no but he can get the fuel pump running he thinks the ecu isnt grounding the fuel pump thus cutting spark

[r3v_v3ng3]

check the ckp sensor

[BreatheLife21]

are u talking about the crank angle sensor?

[r3v_v3ng3]

yes (crank positioning sensor)

[BreatheLife21]

yea thats something i want to check on the mechanic also said he couldn't get a signal from the ecu with the snap on computer