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#1
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AC won't come out of center vents 1995 E320
Howdy,
Like the title says, air is not blowing out of the center vents when the AC is on. Was wondering if anyone had some input. Thanks in advance. |
#2
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Could be a bad vacuum pod, switchover valve or vacuum problems
__________________
1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k) |
#3
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Oracle,
Any part numbers on those? I don't think its vacuum as everything else works. Any more info would be appreciated, thanks. |
#4
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Most likely is vacuum.
The a/c controller (pushbutton) sends signals to vacuum control valve block & that valve allows vacuum to go to vacuum elements that move the flaps in the heater box.
__________________
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 |
#5
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Quote:
EPC is free btw and you can look the numbers there. cold air vacuum element part #- A 124 800 03 75 http://catalog.mercedesshop.com/ShopByVehicle.epc?q=&yearid=1995@@1995&makeid=63@@MERCEDES%2DBENZ@@63&modelid=6392%3ABT%7C5%3AMBC%7C1508%3AED%7C10000022@@E320+Sedan&keyword=vacuum@@vacuum&catid=All@@All&subcatid=P%3A241862@@Vacuum+Change+Over+Valve&applicationid=W0133-1607176&mode=PA Download ACC.pdf from FileFactory.com Download vacuum.pdf from FileFactory.com
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1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k) Last edited by Oracle12345; 03-04-2009 at 09:46 AM. |
#6
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search for more info
There are multiple threads in here on the vacuum pods- gsxr has the best one. Search to find it or him.
"I don't think its vacuum as everything else works." Wrong- the vacuum pods develop hairline cracks over time, so it is very possible for one pod to fail while others still work, as well as all other vacuum related functions. You can diagnose the vac pods with a mityvac, pulling the passenger side airbag, and checking vac at the distribution manifold on the heater box. Gsxr describes this, as do many other threads. Much more likely to be vac pod not ACC module. Been there, done that, fixed it thanks to gsxr. |
#7
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See my post #4 here
300e Climate control problem - help! This assumes your system has gone to default. The vac line under heater box to reservoir is often overlooked. If you have to pull passenger air bag to check controller, it's easy to do. Just follow instructions posted elsewhere in forum. |
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