Eng rpms go up. on 1995 Lexus LS400

When I turn on the A/C the eng rpms go up, and makes the car idle rough.

by in Knoxville, TN on May 30, 2011
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1 answer
ANSWER by , May 30, 2011
It's normal for the idle speed to rise when the A/C is on but the engine shouldn't run rough. I assume that the check engine light isn't on or you'd have mentioned it. I'm thinking that the A/C compressor may be seizing up and causing the engine to stagger or there may be an ignition or fuel problem. If you want to find a Lexus specialist, here's our directory link for you: https://repairpal.com/directory?address=37938&car_brand_names=Lexus