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Serp belt not spinning with engine on


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rtognazz
New User

Aug 18, 2011, 6:59 PM

Post #1 of 5 (1885 views)
Serp belt not spinning with engine on Sign In

On my 05 mini cooper S, I have a issue where my drive belt does not turn with the air conditioning on, even though the engine is running and the crank shaft is spinning. I replaced the belt and it didn't help. I also hear a bunch of rattling down by the crank shaft. When I remove the belt, all pulleys spin freely and so does the air compressor. Any thoughts?


(This post was edited by rtognazz on Aug 18, 2011, 7:00 PM)


zmame
Veteran / Moderator
zmame profile image

Aug 18, 2011, 7:09 PM

Post #2 of 5 (1876 views)
Re: Serp belt not spinning with engine on Sign In

Good chance your A/C compressor is seized.. unplug the magneting clutch or leave AC off and get it to a shop for proper diag. AC might also come on if defrost is selected so I would recommend unplugging the A/C clutch.


rtognazz
New User

Aug 18, 2011, 8:10 PM

Post #3 of 5 (1871 views)
Re: Serp belt not spinning with engine on Sign In

AC clutch turns freely. The thing is running pretty rough as well.


zmame
Veteran / Moderator
zmame profile image

Aug 19, 2011, 4:27 AM

Post #4 of 5 (1860 views)
Re: Serp belt not spinning with engine on Sign In

Thats the point A/C cluth will move freely unless engaged.. is there engine light on?.. sounds like your in way over your head to attempt to fix it your self anyways.. I would get it towed and checked out.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 19, 2011, 6:12 AM

Post #5 of 5 (1854 views)
Re: Serp belt not spinning with engine on Sign In

rtognazz : Understand that compressor is two things. Just a stupid pulley and when engaged that pulley is static and compressor working, likely blown and working too hard.

As "Z" said, unplug the compressor. No A/C but not going to break the belt or get worse as I see what's happening here,

T







 
 
 






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