A whining noise from the AC compressor in your 1996 Lexus SC 400 could indicate several issues. It might be due to low refrigerant levels, which can cause the compressor to struggle and produce noise. Additionally, a worn-out bearing or internal component failure within the compressor itself can also lead to whining. It's advisable to have the system checked by a professional to diagnose and resolve the issue.
Are you sure it is the A/C Compressor and not the power steering pump? LS400, SC 300 and SC 400 are known to have power steering pump issues that leak onto the compressor causing ac compressor failure. Replace the pump as soon as you see a leak.
My lexus speedoment does'nt work no running at all....I do not why it happened suddenly?
it would be a 5 by 6 belt for a magnum for a Lexus you would need a 3 by 7
You add freon to the low side fitting,top front,on the ac compressor
You will have to figure out why: This the 90% of the time failur: Is there Freon in the system, if there is not a minimum pressure, usually 17 PSI, the compressor will not run. Is the compressor and clutch capable of working? Is the fuse in good shape.
Can be the alternator going bad, water pump going bad, or a transmission problem. Have this diagnosed by a professional.
You need to have a mechanic service your car. The flashing light means the compressor is not engaging.
Dorotea Mercuri
No, it is not needed because the intake charge is at ambient temperature already( hasn't been compressed by a compressor).
check the a/c clutch when those go out the whole system shorts out
It's either low on charge, has bad wiring, needs a new pressure switch or needs a new clutch.
To bypass the compressor on a 1994 Lexus GS 300, you typically need a serpentine belt that is approximately 84.5 inches in length. However, it's best to confirm this measurement by consulting a repair manual or an automotive parts store for the exact size, as variations may exist based on specific engine configurations or modifications. Always double-check before purchasing to ensure proper fitment.