Re: Explain the ECU to me please?
yes for emmisions but also for driveabilty and reliablty scince efi was started, motor repairs are a thing of the past no more burnt valves ect 100,000 K's and a motor is just run in now, back in carby days thats time for a new one
the speedo tranducer works the dash pointer it yes goes to the ecu for shift points but the shift points are also dertemend by box temp, motor temp, load, rpm, speed, throttle pos.
the eng ecu only controls only driveline parts
the a/c idle is is done by a input from the ,cc unit ( or a/c thermostat on man a'c cars) call a/c demand then if the ecu "says yep ok" (eng speed to low ,temp ,load )it will a output to t relay turning the comp on (ever noticed flooring eb2> will cause the a/c to turn off until relesed will also turn off if the motot is to hot) , the p/s rack switch is a on/off switch when press on the high side reachs the pre dertremed level it closes witch causes idle up when press drops the switch opens both of these are differnt inputs to the ecu witch outputs to the ica ,
eccv yes has the bbm output and adj's the timing ,gearbox control ,a/c control , eng fan control, fuel pump control and on some high ser ef/l ,s had steering press control this was controld by a vavle in the rack making the steering "light"at slow speedsthen getting hever as the car speed is faster
im not sure about any carbie that will fit on a EA cfm mainfold they had a weird stud patten