lumpy74 Posted February 25, 2011 Share Posted February 25, 2011 I have a 2004 CX613 with a E7 427. When the truck runs right it has great power on low and top end. The truck occasionally loses power. The turbo sounds like it is not spooling up. When it loses power the exhaust gets loud as though the muffler was taken off going down the road. Loud on acceleration and slowing down with the Jake on. The electrical malfunction light only comes on some times. Have not been able to read any codes because the malfunction light does not stay on. Engine also idles rough. Almost appears that it loses a cylinder. Any help would be great. Please advise. Quote Link to comment https://www.bigmacktrucks.com/topic/18112-e7-power-loss/ Share on other sites More sharing options...
Mackpro Posted February 25, 2011 Share Posted February 25, 2011 I have a 2004 CX613 with a E7 427. When the truck runs right it has great power on low and top end. The truck occasionally loses power. The turbo sounds like it is not spooling up. When it loses power the exhaust gets loud as though the muffler was taken off going down the road. Loud on acceleration and slowing down with the Jake on. The electrical malfunction light only comes on some times. Have not been able to read any codes because the malfunction light does not stay on. Engine also idles rough. Almost appears that it loses a cylinder. Any help would be great. Please advise.I was thinking EGR valve sticking open or most likley VGT/ turbo actuator. Really need to get a fault code out of it. Both of these parts are $1000 each so I wouldn't want to start throwing parts at it. Till you know for sure. Quote Link to comment https://www.bigmacktrucks.com/topic/18112-e7-power-loss/#findComment-73465 Share on other sites More sharing options...
lumpy74 Posted February 26, 2011 Author Share Posted February 26, 2011 I was thinking EGR valve sticking open or most likley VGT/ turbo actuator. Really need to get a fault code out of it. Both of these parts are $1000 each so I wouldn't want to start throwing parts at it. Till you know for sure.I would like to do that but I can't read any fault codes unless the malfunction light stays on. It very rarely even flashes. Quote Link to comment https://www.bigmacktrucks.com/topic/18112-e7-power-loss/#findComment-73506 Share on other sites More sharing options...
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