vschopp Posted April 30, 2004 Share Posted April 30, 2004 New to the land of SC's, recently purchased a 92 SC400 with 100k and have all of the classic issues IE lower control arms, ect. but there is a problem that I could use some expertise. Car runs great until I crank up the A/C. Car seems to run fine for awhile but then she starts surging even on the highway. Turn off the A/C and it stops surging. Car had 100k trip through a Lexus dealership and a tuneup was performed. I just changed the fuel filter as well to no avail. Anybody run into this....Thanks Quote Link to comment Share on other sites More sharing options...
Recklessracoon Posted May 20, 2004 Share Posted May 20, 2004 probably a bad bearing on the a/c pump. mine makes a high pitched whining noise when i turn the a/c and it definitely robs me of some power. im going to look for a rebuild or take the pump off because a new one i think is like 450 dollars. Quote Link to comment Share on other sites More sharing options...
Theodore Posted May 20, 2004 Share Posted May 20, 2004 My AC makes a weird clicking noise inside the car. probably the little fan that pushes air threw the vents. Quote Link to comment Share on other sites More sharing options...
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