I have a warrenty on a 2005 Ford Diesel Lariet. The turbo failed to work and

I WOULD CALL FORDS CORPORATE OFFICE AND EXPLAIN TO THEM WHAT THE PROBLEM IS AND WHAT IS GOING ON AND FIND OUT IF IT IS THE PROPER REPAIR FOR A BAD TURBO.

A turbo charger is driven by your engines exhaust. If the turbo failed to work, cleaning it is not going to solve the problem. If it failed to work, i'd be worried about it being seized. Your mechanic buddies are right, if it seized up, your exhuast is still going to want to turn it, and metal filings will get in to your intake manifold, and end up in your combustion chambers and effectively ruin your engine. If its still under warranty, I would insist they repair or change the turbo and if they still dont want to, have them put everything in writing to include the "cleaning policy". That way you're covered when your engine fails. Good luck.

First of all you can't just take out a turbo and clean it. So if they cleaned it I would like to know how.

Just some helpfull info since this is old! The newer fords are having horrible trouble with the oiling systems so maybe the turbo not junk and yes there is nothing to clean really. But they do have a system to control boost pressure that maybe what they cleaned if it was stuck open it will produce no boost in effect no turbocharging. Which does happen. Also if oil system faults in fords it will cause injectors to not open( run by oil pressure) which not enough fuel means no fuel to burn no boost pressure. Sometimes its hard for us mechanics to be specific if speaking to someone who is clueless or has only some understanding. Rough situation. turbos very easy to tell if bad though so hopefully shop is a competant one.

Does this turbo have the adjustable exhaust veins? If so, there is a cleaning factor involved. The question is, what were they actually cleaning out... filings or soot build up from poor quality fuel or build up of soot due to oil seal leakage. If it is the more standard turbo then, yes, the boost machanism can seize up. One of the oiling system problems was a composite gear in the high-pressure oil pump that would shatter. You must do a complete tear-down to get all the left over pieces out. Some of those pieces would lodge themselves in the injectors causing them to fail. All remaining pieces did even more damage in time. Hope this helps you. Also try powerstrokehelp.com.