my rpm gauge goes up and down on 2004 Chevrolet Impala

when traveling up a ramp I seem to have no power and when I am driving normal it seems like my impala wants to accelerate.

by in Yuba City, CA on August 30, 2011
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1 answer 1 comment
ANSWER by , August 30, 2011
i would have the fuel pressure checked and the cat coverter checked for blockage. Roy
COMMENT by , August 30, 2011
thank you for your advice. I'll have my mechanic check it for me.