Just had an EGR delete done on my 03' 6.0L. Now it has a significant droan in the 1200-1400 rpm range. Put it back in the shop for another week and they tinkered around with exhaust alignment and whatever else they could adjust but it's still the same. It's definitely the Turbo. They are at the point now where they want to start charging me more $$ to have the turbo worked on (balanced, etc). I just spent almost $4K to get everything fixed and it comes back with a problem it did NOT have before and so they want to charge me more to fix this NEW problem!!

So, anyone have any similiar experience or any ideas. Could the EGR delete cause a change in airflow that would negatively affect the turbo like this? Is it possible the turbo was going bad and it just manifested itself once the airflow changed? I'm just grasping for answers.

ken

 

Moved to the 6.0L Power Stroke Diesel forum.

 

6.0 Moan/Droan Between 1500-2000 RPM:
Engineering has investigated this condition and found the cause to be engine firing pulses causing the turbo mounts to vibrate/resonate. For trucks built through 9-29-03 install a revised turbo pedestal, P/N 3C3Z-6N639-BA. Trucks built after 9-29-03, install a turbo bracket A-brace, P/N 5C3Z-6N639-BA. If the droan is still present after installing the brace on trucks built from 9-30-03 through 1-17-05, replace the turbo pedestal with 5C3Z-6N639-AA. Ensure the droan is not caused by a bound exhaust system. Inspect for any damaged or broken exhaust hangers. Check the turbo downpipe by loosening the pipe at the top and bottom, checking its alignment and retightening. If the droan is still present, check the part number embossed on the turbo pedestal just below the turbo compressor outlet to the intercooler. If the number IS NOT 1846207C1, replace the pedestal with the above part. After replacement, or if the number IS 1846207C1, loosen the turbo inlet pipes and EGR cooler flange and neutralize by installing the components in this order: snug the flange between the LH and RH inlet pipes; torque the EGR cooler clamp to 53 in/lbs; torque the pedestal bolts to 23 ft/lbs; torque the turbo inlet clamp to 9 ft/lbs: snug the inlet pipes to manifolds. Ensure all components are properly aligned. Torque the flange between the LH and RH inlet pipes to 20 ft/lbs and the inlet pipes to the manifolds to 20 ft/lbs. Broadcast Message 0992, SSM 17530, TSB #04-9-4 & 05-19-12.

 

Sorry, I should have mentioned that the diesel shop actually handed me a copy of this TSB when I picked up the truck and said that's what they were following. However, they did not change out the pedestal or anything else. Basically, they just loosened and retightened stuff. I read in other threads on this subject that the new pedestal was a waste of money since it didn't seem to help.