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turbo issues

697 Views 6 Replies 5 Participants Last post by  99cummins310
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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Another one of those impossible issues. I guess the speedo changes it's accuracy. Or the clutch is slipping. Take your pick. Take it to a diesel shop for better analysis...
1 - 1 of 7 Posts
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