bullbuilt Posted July 17, 2014 Share Posted July 17, 2014 Just bought a 07 chn613 with 460 18 spd. Pulling heavy loads of course it does better on flat ground but basically does ok. Sometimes when taking off from a dead stop it hesitates for 5 or 6 seconds before the turbo kicks in and then the boost will begin building and then it will go. This only happens sometimes loaded or not. Any suggestions? Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/ Share on other sites More sharing options...
wheeler73 Posted July 17, 2014 Share Posted July 17, 2014 Replace the boost pressure sensor and check the egr operation and cooler for leaking and or plugging. Also inspect the turbo. Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/#findComment-253146 Share on other sites More sharing options...
staxx Posted July 17, 2014 Share Posted July 17, 2014 Check the pins at the vgt connection on turbo . Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/#findComment-253150 Share on other sites More sharing options...
Mackpro Posted July 17, 2014 Share Posted July 17, 2014 Done the Step 12B software update yet? Its for poor throttle responce. Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/#findComment-253192 Share on other sites More sharing options...
Jamkar Posted July 19, 2014 Share Posted July 19, 2014 Gday 68, do ya think that could be issue with my 2003 470hp CCRS?Pulls good (32psi) when working, but it's a dog till it gets going. I had an Etech that did the same thing, but if I jabbed the go pedal a couple of times it used to come to life. Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/#findComment-253308 Share on other sites More sharing options...
wheeler73 Posted July 20, 2014 Share Posted July 20, 2014 The step 12b does help alot but there could be other issues. Have the dealer check for step 12b and if it is able to take step 12b programming and have them do it and see if it helps. Quote Link to comment https://www.bigmacktrucks.com/topic/36383-07-chn613-w460-intermitten-turbo-lag/#findComment-253376 Share on other sites More sharing options...
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