lraffe1 Posted March 25, 2010 Share Posted March 25, 2010 I have a 08 with a complant of low fuel ecnomy and a noise coming from engine that sounds like a turbo going bad. truck has no codes and message centers reads 13.8 mpgs. I did verfy a rotational noise coming from turbos but can't identify which turbo. i have disassembed to point were i can check compressor wheels but don not see any signs of wheel contacting housing or excsive laterel play. i started and ran with tubes off but engine is now cold and not making noise. i personal haven't had any 6.4 failed turbos. has anyone had a concern like this. or has turbo failure starting to become comon. Quote Link to comment Share on other sites More sharing options...
GregKneupper Posted March 26, 2010 Share Posted March 26, 2010 The majority of excessive turbo noise complaints that I get are actually the cooling fan coming on. Check the coolant level and verify that there are no leaks. If that is good then road test and monitor ect and eot. Make sure that there is not a wide variation between the two and that ect does not fluctuate by more than 5 degrees give or take a few. If you find ect fluctuating by quite a bit more I would suspect the thermostats are sticking. Quote Link to comment Share on other sites More sharing options...
lraffe1 Posted March 26, 2010 Author Share Posted March 26, 2010 to be more clear the noise is after engine shut down and turbos are slowing down. i good also her noise after fead and fan have stop turning. Quote Link to comment Share on other sites More sharing options...
Aaron Posted March 26, 2010 Share Posted March 26, 2010 Would it be a reasonable suggestion to maybe get all the shit off of the turbo and junk where the crossover tube goes on, so you could pull it off quick after shutdown to isolate the turbos from each other to see if you can hear which one is making the racket? What's the hotline have to say about all this business? Quote Link to comment Share on other sites More sharing options...
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