Posted By: fisherman dan
merc 4 strole 60 efi- 6 warning beeps- guardian mode active. - 09/25/20 03:09 PM
I am at a loss. Replaced lower unit with a new one. Replaced fuel system components from pick p to engine, rebuilt LPFP, HP fuel pump, replaced all fuel filters, replaced plugs, ohmed out coils (good), changed thermostat, temp sensor, flushed motor several times, re-set ECM and STILL get 6 beeps after engine runs WOT for 5 minuets!!!!! Back off throttle and immediately warning horn stops. If I run 15- 20 mins, warning horn - 6 beeps and have to wait to continue at a lower RPM.
Sometimes, when throttle goes to idle after engine is warm, I get 1 long beep and then it no horn. Idle is good. Engine runs fine until warmed up.
I need help!, I,m in offer $3000.00!!!!
Sometimes, when throttle goes to idle after engine is warm, I get 1 long beep and then it no horn. Idle is good. Engine runs fine until warmed up.
I need help!, I,m in offer $3000.00!!!!