Hi Guys ,
i have a little problem with my supra
its single Turbo ,600cc injectors and fitted with HKS FCON GOLD ,
She’s running rich on start up and AFR reading 9.50 and when it gets warmer AFR seats between 10.50 to 11.00 and i get error codes 13 and 21
the car never had O2 sensor and the plug is just there but nothing has been connected
so far I have checked BOTH CRANK SENSORS RESISTANCE AND CRANK SHAFT SENSOR all readings okay and all the wiring on the ecu has been checked an all seems okay!!
the strange thing is if i start the car and hold the accelerator on 1100 the engine code not comes up but as soon as let go the accelerator and RPM goes on 900 or 1000 the engine light comes on and don’t go away
could this be something to do with TPS SENSOR ?
i have checked the oem Ecu with my other supra and works fine and 12v fuel pump mode has been done as i had a problem with my oem fuel pump ecu !
any suggestions would be very helpful
thanks