TorresTransport Posted September 30, 2014 Share Posted September 30, 2014 ok heres the break down ...I've had this 2005 CHN613 with a ASET 427 E7 for the last 5 months now, everythings been going great until recently ...its been experiencing power loss, its not the turbo although i have been getting a 4-5 fault code but the waste gate/ turbo are operating fine, any suggestions on a solutions are very welcomed. I've changed the engine speed sensor, primer pump, turbo oil filter, next I'm going to change the diesel filter ...all these have been suggestions of my house mechanic ... Quote Link to comment Share on other sites More sharing options...
wheeler73 Posted September 30, 2014 Share Posted September 30, 2014 You really should do the 4-5 diagnostics when it is active. Also check the boost pressure sensor. I have seen a lot of issues with them. The way they are installed lets the air intake piping hit the connectorand causes the pins to loosen. I usually install a 45 or 90 degree fitting to intall the boost pressure sensor into the keep it from hitting the piping. Quote Link to comment Share on other sites More sharing options...
TorresTransport Posted September 30, 2014 Author Share Posted September 30, 2014 Thank you for the reply, the one issue that I have with trying to figure out the 4-5 fault code is that everyone mechanic especially the mack mechanics give me the old 'that code means nothing don't worry about it ...' line, I'm just dollar bills on legs to them coming back over and over Quote Link to comment Share on other sites More sharing options...
wheeler73 Posted September 30, 2014 Share Posted September 30, 2014 Thats unfortunate. Check the boost pressure sensor as this can cause 4-5 code along with other issues. It is not a code that means nothing. Sound like you have crappy dealers around you. Quote Link to comment Share on other sites More sharing options...
staxx Posted September 30, 2014 Share Posted September 30, 2014 The 3 pin connector at the turbo also known as the VGT connector , these pins are loose causing your 45 code . The pins on the engine harness side are the ones you need to replace , female . pins can be bought at MACK . The pins get loose from the engine fan blowing on it making wire and connector vibrate loosning up the pin tension and breaking down the copper wire inside . Quote Link to comment Share on other sites More sharing options...
TorresTransport Posted September 30, 2014 Author Share Posted September 30, 2014 Would the VGT connector malfunction cause the truck to lose power/torque?? I'm going to pick it up today after ...hopefully a full days work ...and yes, the mechanics around here are terrible Quote Link to comment Share on other sites More sharing options...
TorresTransport Posted September 30, 2014 Author Share Posted September 30, 2014 Staxx, thank you very much sir. That was exactly the problem with my truck, hopefully one day I can be of help to you as you were to me on this day 1 Quote Link to comment Share on other sites More sharing options...
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