Moose Mack Posted September 19, 2022 Share Posted September 19, 2022 E7 ecu came back from suspension place with codes 2-2 2-4 and 3-3 I think they line bored the front hangers without disconnecting the batterys Now I've test all the wiring harness for a shorts to ground and to each other in which I found at the coolant temp sensor the was 4.5v on both wires so I unplug the fic module and the 4.5 voltage went away on the ground wire So we swapped the fic module with a known good unit out of one of our other trucks and that seem to fix the problem however we left it plugged it and went away for work we came back to it the truck had the same faults and we think its fried a second module The truck won't start unless the throttle is held flat and if you drive the truck it sputters around 1200rpm on deceleration like it loses RPM signal or something Any help would be much appreciated also we're from Australia 🇦🇺 Quote Link to comment https://www.bigmacktrucks.com/topic/70456-ch-e7-engine-ecu-faults/ Share on other sites More sharing options...
Adkat Posted September 19, 2022 Share Posted September 19, 2022 G'day Moose, What year's your CH? Pre Etech E7 would be Vmac 2 which doesn't list a 3-3 flash code, 2-2 would be coolant temp sensor and 2-4 would be intake air temp sensor Vmac 2 manual https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6112 Etech and ccrs are Vmac 3,which lists 2-2 as boost air pressure sensor, 2-4 as transmission oil temp sensor, and 3-3 as engine speed/ position sensor Vmac 3 manual https://macktrucks.vg-emedia.com/ProductListing.aspx?keyword=8-211 Quote Link to comment https://www.bigmacktrucks.com/topic/70456-ch-e7-engine-ecu-faults/#findComment-509819 Share on other sites More sharing options...
fjh Posted September 19, 2022 Share Posted September 19, 2022 1 hour ago, Adkat said: G'day Moose, What year's your CH? Pre Etech E7 would be Vmac 2 which doesn't list a 3-3 flash code, 2-2 would be coolant temp sensor and 2-4 would be intake air temp sensor Vmac 2 manual https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6112 Etech and ccrs are Vmac 3,which lists 2-2 as boost air pressure sensor, 2-4 as transmission oil temp sensor, and 3-3 as engine speed/ position sensor Vmac 3 manual https://macktrucks.vg-emedia.com/ProductListing.aspx?keyword=8-211 With FIC module would make it vmac 1! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70456-ch-e7-engine-ecu-faults/#findComment-509824 Share on other sites More sharing options...
Moose Mack Posted September 19, 2022 Author Share Posted September 19, 2022 (edited) 2 hours ago, Adkat said: G'day Moose, What year's your CH? Pre Etech E7 would be Vmac 2 which doesn't list a 3-3 flash code, 2-2 would be coolant temp sensor and 2-4 would be intake air temp sensor Vmac 2 manual https://macktrucks.vg-emedia.com/ProductDetail.aspx?ProductId=6112 Etech and ccrs are Vmac 3,which lists 2-2 as boost air pressure sensor, 2-4 as transmission oil temp sensor, and 3-3 as engine speed/ position sensor Vmac 3 manual https://macktrucks.vg-emedia.com/ProductListing.aspx?keyword=8-211 Yea mate it's a Vmac1 has the 2 separate modules and the year is a 93 build Edited September 19, 2022 by Moose Mack Quote Link to comment https://www.bigmacktrucks.com/topic/70456-ch-e7-engine-ecu-faults/#findComment-509825 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.