Bradford Posted November 8, 2018 Share Posted November 8, 2018 I've got a 98 ch 612 with e7 etech and it keeps intermittently ringing the buzzer with the shut down light. I replaced the fan clutch solenoid and it went away for a few hours. Now the light and buzzer still come on. I slammed my tailgate today and it shut off. Still flashing a 4-2 code. I checked the wires on the coolant sensor and they seem okay along with the ac high side pressure sensor. Do I need to replace both sensors? Quote Link to comment https://www.bigmacktrucks.com/topic/54776-98-ch-with-e7-etech-4-2-code/ Share on other sites More sharing options...
Bradford Posted November 8, 2018 Author Share Posted November 8, 2018 Now I just got it started back up and when I shut my hood it shut back off. Is my wiring harness shot, and letting wires rub during the right vibrations? Quote Link to comment https://www.bigmacktrucks.com/topic/54776-98-ch-with-e7-etech-4-2-code/#findComment-409105 Share on other sites More sharing options...
hatcity Posted November 9, 2018 Share Posted November 9, 2018 4-2 is "fan clutch output" according to my sheet. Is coolant temp high? may have to replace fan clutch Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/54776-98-ch-with-e7-etech-4-2-code/#findComment-409108 Share on other sites More sharing options...
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