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turbo issues

699 Views 6 Replies 5 Participants Last post by  99cummins310, 
SmokeDreams
My friend has a 99 2500 5 speed 2wd extended cab longbed and called the other day saying that in 5th gear he was running 2200 rpms at 65 mph when normally he would be at 75. He said his truck was louder than usual and he couldnt hear his turbo like he normally could and didnt seem to have as much power.

He said he could down shift and then it would spool but cruising it wouldnt spool like normal.

I told him to check shaft play and look for leaks in the boots.

Any other ideas why this would be going on?
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99cummins310
hard to tell without gauges what psi your normally running at but if the clutch is slipping that would mean theres not the normal load on the motor to build that boost that he is used too.... you should be able to tell pretty easy if the power isn't getting put to the rear tires like he is used too...
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