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#1
04-08-2006, 01:56 PM
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95 c36 vaccum pump and a/c
i'm noticing the vacuum pump in the trunk keeps goin on and off when i have the a/c on. is this normal or is there some kind of leak? also the two center vents on the dash don't blow as much. are these 2 problems related. any help is well appreciated.
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#2
04-10-2006, 08:30 AM
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IN most cases (99% of the time) they are related! A leak in the A/C system causes the central locking pump to run for a few seconds to help with (MVA).
With the a/c control on AUTO set around 70-72..try pressing the EC button..if that slows the cycling of the vacuum pump then the fresh air vacuum element is the most likely problem..
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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