Quote:
Originally Posted by duxthe1
Your compressor clutch is failing and when compressor rpm doesn't match engine rpm the relay shuts it down.
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The high amp draw for the clutch also suggests slipping.
Later MBs with a single serpentine belt have a speed sensor in the back of the compressor. If the engine and compressor rpms synch (not match), then the compressor stays on. If out of spec, the power to the clutch is removed. The initial start up comparison is bypassed when engaging the compressor because the will be a discrepancy between the rpms until the clutch stops slipping. That's why it engages initially, then cuts out.
Jim