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turbo issues

701 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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I may have misunderstood him on the speed part. But what about the lack of boost and stuff? He doesn't have any gauges yet and the clutch was just replaced. Its bone stock so no power adders, not to say he didn't still roast a clutch but he didn't mention anything of that nature.

I told him maybe the wastegate was sticking open? I'm no expert so if I sound like a complete idiot cut me some slack.

What are the symptoms of a turbo going out?
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