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 , June 03, 2011
Could be the engine fan. When the a/c is on the fan is engaged.
COMMENT by , June 03, 2011
What kind of cost am I looking at if I need to replace the engine fan?
COMMENT by , 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 , 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 , June 06, 2011
$413 plus evacuate and recharge $179
COMMENT by , June 06, 2011
Thanks. wow.. that's lot more expensive labor than the repairpal estimate..
COMMENT by , 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 , June 06, 2011
I have to say, you seem very honest. Thanks.