you talking about the fuel control solenoid? don't know of anything else that could be called the engine control relay.Had the engine control relay go out in my tractor. Installed new one and now the tractor wont rev past 2000rpm. No issues with the cable. The throttle linkage has full range of movement. Not sure what would cause this.
Yea I cracked top of I injectors to make sure no air. Not sure if the factory fuel pump isn’t putting out enough fuel to keep up due to an internal issue in the pump. It’s only rated to put out .01 gpm. Any restriction with that may be part of the issue. I’ll try a few things and see what happens.as far as I know the solenoid powered by that relay is either open or shut, no in between so can't see that relay short messing with that. fact it comes up to 2K rpm leads me to think thats ok.
assume the tank/line work was done due to this new problem of only hitting 2k correct?
did you crack lines on pump and injectors to bleed ?
just for grins remove fuel cap see if works fine, prob won't matter though. maybe remove air filter also. this checks tank venting and for restricted airflow.