The oil and filter was changed Oct.8,2010 and the oil is full. Any other ideas what might be the problem

Check ALL of your turbo oil lines. If they're so much as partially plugged, you'll feel a loss of power.

Ok,Can you tell me what oil line to look for Please let me know

I'm honestly not sure as I've not had this problem. You could check a maintenance manual and see.

map sensor
 

you could have a bad map sensor, I experienced loss of power, no boost, and a check engine light from a bad map sensor.

Ok, still have the same problem no power. I have replaced two injectors , replaced map senor,replaced ICP sensor. Changed oil,oil filter replaced fuel fitler and air filter. checked connections on gaskets for injectors. I still have no power. Is there anyone that can tell me what else it might be.

Did you ever find the problem?? Mine is doing the same thing.

Hi I still have not found the problem if you come up with anything let me know.

ok. do you know any one with a scanner? or go to a diesel shop or hell. even autozone can do it for you. get it scanned for codes. it could be the map sensor. my 94 did that and it ran terrible.

I have a scanner. The only code that came up was 1391 and I took care of that.

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How can I check to see if the map sensor is bad. What type of test can I perform on the sensor ?