The V8 Owners Forum -

Hello everyone As a reminder, I had a 1986 RRC 3.5 EFI with a 4CU ECU # 84477B suspected bad----> lean mixture and retarded acceleration + lack of power. bought second hand a 4CU 84941B sold as the same which gives too rich and black smoke (spark plug destroyed after one day) received another 4CU 84...

Hello @stevieturbo I have the values on the ECU connector (connected) -between pin 6 and 9= 4.3V (Vref) -between pin 6 and 7= 3.7V -between pin 7 and 9= 3.7V which decreases properly (without shocks or jumps) down to 1.6V when the valve is opened to know if the AFM is correctly adjusted I must have ...

hello, thanks for the feedback and the link of course, the measurements are taken directly on the ECU socket... and on the components to compare I know that the harness can be a victim of breakage in its wires...... I tested all the wires under load with a 21w lamp all connectors have been checked a...

thanks

Hello everyone first, I want to apologize for my English, my mother tongue being French. I come to this old topic because I have the same problem on an RRC 87 with a 24D 3.5Efi 4CU (flapper) engine. the vehicle arrived with difficult acceleration, and a mixture that was too lean when cold and when h...

Hello everyone Thank you for accepting me on your forum I am old self -retired mechanic today, living in Belgium I continue my passion by repairing old vehicles (Old and Yugtimers) and particularly English (Rolls Royce, Bentley, Rover and many others) The Internet is a gold mine for the search for p...