Just want to verify if I have the correct ECU ---- A9M is what is on the ECU. I have a 1990 GT Vert with a manual.
Checked KOEO and Passed with a 11. Checked timing advance and OK, but-----------
I am getting a code 41 which indicates system indicate lean KOER test. The engine is running rich I think its because the ECU thinks its lean and making the AFR rich. I tested the O2 sensor heaters and checks OK-- 5.5 ohms, and I do get 12 volts to the heaters, I removed the o2 sensors and I checked with a propane torch voltage in flame .900 volts and goes to 0 volts out of flame-- check OK. checked wiring harness to ECU and signal wires 43 and 29 are OK to ECU. Checked the HEGO ground wire 49 to ground and OK. Am I missing something?
I am running Ceramic Long Tube Headers
Thanks,
Mike
Checked KOEO and Passed with a 11. Checked timing advance and OK, but-----------
I am getting a code 41 which indicates system indicate lean KOER test. The engine is running rich I think its because the ECU thinks its lean and making the AFR rich. I tested the O2 sensor heaters and checks OK-- 5.5 ohms, and I do get 12 volts to the heaters, I removed the o2 sensors and I checked with a propane torch voltage in flame .900 volts and goes to 0 volts out of flame-- check OK. checked wiring harness to ECU and signal wires 43 and 29 are OK to ECU. Checked the HEGO ground wire 49 to ground and OK. Am I missing something?
I am running Ceramic Long Tube Headers
Thanks,
Mike