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91 4 runner immobiliser with an equator immobiliser
I have a toyota4 runner which has an equator immobiliser now she won't fire have spark and fuel but won't start As old as this vehicle is you might think of replacing it with one that fires has spark and fuel.Goodluck )
If the vehicle is fitted with an immobiliser that could be the problem. Have you checked for a spark?
If an immobiliser is fitted the new engine ECU will have to be coded before it will work.
A wiring diagram is almost essential to diagnosing the problem. There is likely to be a relay controlling the supply to the fuel pump but what controls the relay? If the relay is controlled by the engine ECU there will be no supply until the immobiliser is disarmed.
If the vehicle was presented to me I would check for a spark and if a spark is present I would provide a temporary supply to the fuel pump to test if the engine starts, proving the fault is not immobiliser-related but a wiring or switching problem.
sounds like the immobiliser is dead. 1996 immobiliser in south africa qould leave the car dead but 97 onwards cuts out the fuel supply so car starts and dies. it might be fuel relay but i doubt it. try throqing fuel into the intake manually. if it stays on for longer its prob not immobiliser.
It has nothing to do with ECU and immobiliser even if you turn your ECU OFF your car will start and will your but not properly without CPU your car will work in emergency mode. try finding Idle sensors and check them if they are ok