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#1
07-30-2007, 11:12 PM
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high aux fan speed
Is it bad to have the aux fan on high all the time? I have found that it is the only way to combat rising a/c vent temps that otherwise creep up pretty high with just low fan on. by the time the engine temp gets high enough to kick on high fan, I'm already sweating and cursing.
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1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual 
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#2
07-31-2007, 08:10 AM
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ON a 420SEL that has been converted to R134a running that aux fan at a higher speed is required to keep the condenser cool.
You might also look between the condenser & radiator for debris & pressure wash if needed. Also make sure that the fresh air vacuum elements are completely closing off the outside air.
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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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#3
07-31-2007, 08:59 AM
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It is still an r-12 car. I have cleaned the condenser with hvac condenser cleaner and it looks as though the area is clean. I have also verified that
the recirculation doors do shut, even though I think they still draw some outside air in.
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#4
07-31-2007, 09:38 AM
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Between the radiator & condenser is where debris collects.
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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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#5
07-31-2007, 09:56 AM
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What's the best way to clean in there without removing the condenser?
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#6
07-31-2007, 11:13 AM
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It's tough to do without removing the condenser. However, removing that condenser is very easy, should take 20 minutes tops.
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08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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#7
07-31-2007, 11:43 AM
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I just didnt want to discharge the system
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#8
07-31-2007, 11:59 AM
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Then just remove the radiator, that way you will have access to the back of the condenser.
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
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#9
07-31-2007, 12:40 PM
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HMMMM. I guess I could have thought of that.
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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#11
07-31-2007, 11:49 PM
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no. it is hugging the radiator. I pulled the aux fan today to clean behind it and i also tested the fan with the engine off to see how much air it pushed through the radiator and it happened to push enough air to slowly turn the radiator fan so im hoping to forget about pulling the radiator or condensor.
__________________
1984 300SD Orient Red/ Palomino 1989 560SEC 2016 Mazda 6 6 speed manual 1995 Ford F-150 reg cab 4.9 5speed manual
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