Motor noise when A/C is on on 1996 Lexus ES300

My 96 ES300 runs perfect and everything works great except for this noise coming from the hood when A/C is on and the car is accelerated, meaning noise occurs only when I step on the gas pedal. This noise sounds very much like engine revving sound. The thing is A/C works fine. What could be wrong, and what kind of repair cost should I expect?

by in Denver, CO on June 02, 2011
1 answer 7 comments
ANSWER by on June 03, 2011
Could be the engine fan. When the a/c is on the fan is engaged.
COMMENT by on June 03, 2011
What kind of cost am I looking at if I need to replace the engine fan?
COMMENT by on June 03, 2011
This car has an electric fan so I may be wrong about the noise. We would have to listen to the car to be sure.
COMMENT by on June 06, 2011
In case I need to replace the A/C compressor, and I bring the part that I buy on internet, what would you charge for replacing (labor only) the A/C compressor and clutch?
COMMENT by on June 06, 2011
$413 plus evacuate and recharge $179
COMMENT by on June 06, 2011
Thanks. wow.. that's lot more expensive labor than the repairpal estimate..
COMMENT by on June 06, 2011
If you want to get your own parts we increase the labor to recover the profit we make on the parts.
COMMENT by on June 06, 2011
I have to say, you seem very honest. Thanks.