2005 Isuzu NPR

Engine Performance problem
2005 Isuzu NPR 4 cyl Two Wheel Drive Automatic 43000 miles

engine has much less power than normal- when I push on pedal it seems to bog down. When cruising at 35-40 mph and accelerating, engine revs and trans downshifts but speed does not increase and engine seems like it doesn't have full compression.
Grant oaks
February 17, 2009.

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