Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Hi all I have the same problem in my 300SE/126. So far I have not been
able to pinpoint the fault but I am inclined towards the defrost actuator
having a slow leak as Trampas has mentioned.but the condensation is on the
inside !
mak
- Original Message -
From: Trampas [EMAIL PROTECTED]
To: 'Mercedes Discussion List' mercedes@okiebenz.com
Sent: Wednesday, July 25, 2007 5:11 PM
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Well most likely when you shut the A/C off the vents are switching to the
defrost mode due to a leak in one of the actuators. Thus the cold air hits
the windshield causing the condensation. The condensation will most likely
be on the outside of windshield and removed with wipers.
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi Jim! yes, i'd expect *some* vapor, but not enough that it were to cloud the windshield to total opaqueness... and it didn't behave this way over the last few years; this is a relatively new quirk. and no, the AC isn't blowing through the defroster vents (unless, of course i select the defroster). cheers! e Jim Cathey wrote: lately, anytime i shut off the A/C after using it while driving, moisture vapor becoming condensation blowing onto the windshield becomes bad enough as to impede visibility. any ideas as to what this is a symptom of, and/or what i might look for? Some degree of that can be normal, depending on atmospheric conditions. But I would first check to see that your AC is not blowing up through the defroster vents, chilling the glass so that when you shut it off and the natural evaporation of the un-drained condensate (of which there is always going to be some) re-condenses on the cold glass. The AC's not supposed to blow up the defroster vents unless you select the button next to DEF. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi Tom!
safe assumption; yes, this is on the inside. 'twere it on the
outside, it wouldn't be a problem, since there's windshield wipers to
handle moisture on the outside,... ;-)
i haven't seen any sign of coolant loss, and it only happens right
after i shut off the AC, so i don't suspect the heater core.
i wasn't able to locate with any certainty what might be the
condenser drain; any tips/hints on where to find it?
cheers!
e
Tom Hargrave wrote:
I'm assuming it's on the inside? If so then this is a symptom of one of
two issues. One is a slow leak in the heater core and the other is a
plugged drain line, allowing condensate to pool inside the unit.
If its on the outside then it's just moisture condensing on the outside
of your cold glass.
Tom
www.kegkits.com
Original Message
From: ernest breakfield [EMAIL PROTECTED]
Sent: 07/24/07 11:02 AM
To: Mercedes Discussion List mercedes@okiebenz.com
Subject: [MBZ] windshield misting over after A/C shutdown ('85 300D)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
hi all!
i've got a curious symptom that i'm hoping someone can point me to
the cause of:
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield becomes
bad enough as to impede visibility. any ideas as to what this is a
symptom of, and/or what i might look for?
cheers!
e
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi James!
interesting theory, but i don't think so; the AC is definitely
coming on, and it's only after i turn it off that i get the fogging on
the screen.
cheers!
e
James Zavesky wrote:
Low Freon. Your A/C compressor isn't kicking on during specific weather that
can cause the windows to condense up. Charge the A/C.
James Zavesky
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Jim Cathey
Sent: Tuesday, July 24, 2007 9:16 PM
To: [EMAIL PROTECTED]; Mercedes Discussion List
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield
becomes
bad enough as to impede visibility. any ideas as to what this is a
symptom of, and/or what i might look for?
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi Peter! sorry if i wasn't clear enough; this isn't occurring when i shut the engine off, but only after i shut the A/C off while the car is still running, and it isn't specific to any type of weather. (not that we're likely to have cool damp weather where i'd have the A/C on here in the SF Bay Area, anyway,...) ;-) cheers! e Peter Frederick wrote: Pretty much normal in summer -- when the engine is shut off, the monovalve goes open, allowing hot coolant to circulate through the heater core as the engine cools. in cool, damp weather (summer evenings in particular), the windshield will be cool enough that the condensation evaporated by the now hot heater core will cause misting on the inside. Should vanish shortly after you start up again and the evaporator cools off and blows dry air. Usually worse if you have the button next to the defrost pressed. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi Barry! (first; no ernie here,... ;-) ) i'm familiar with the conditions that lead to condensation; in case i wasn't clear enough earlier, we're talking a relatively new occurrence in this car that goes far beyond mere normal condensation. the buildup is enough that you can't see through it, until you've given it enough time and air circulation that the buildup is allowed to evaporate, or you turn the A/C back on...!? cheers! e Barry Stark wrote: Ernie - Consider this...you have warm moist air inside your car. When it gets near something cold, the moisture in the air changes state from a gas, water vapor, to a liquid, water. You have seen this on the outside of a glass of ice water. If the warm air inside the car is circulated through the Air conditioning unit, the change of state takes place on the outside of the very cold evaporator inside the unit under your dash. If the A/C is off then the evaporator is no longer that cold so water does not condense on it. Ok so now you have the warm moist air in your car but there is a cool breeze blowing on the windshield, thus the change of state takes place on your cool windshield and the windshield fogs up. Barry anytime i shut off the A/C after using it while driving, moisture vapor becoming condensation blowing onto the windshield becomes bad enough as to impede visibility. any ideas as to what this is a symptom of, and/or what i might look for? ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Using the A/C is supposed to clear foggy windows, might be a blocked drain
hole or some such thing.
- Original Message -
From: Jim Cathey [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; Mercedes Discussion List
mercedes@okiebenz.com
Sent: Wednesday, July 25, 2007 10:46 AM
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Well most likely when you shut the A/C off the vents are switching to the
defrost mode due to a leak in one of the actuators. Thus the cold air hits
the windshield causing the condensation. The condensation will most likely
be on the outside of windshield and removed with wipers.
Trampas
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Hendrik Riessen
Sent: Wednesday, July 25, 2007 4:03 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Using the A/C is supposed to clear foggy windows, might be a blocked drain
hole or some such thing.
- Original Message -
From: Jim Cathey [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; Mercedes Discussion List
mercedes@okiebenz.com
Sent: Wednesday, July 25, 2007 10:46 AM
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
i wasn't able to locate with any certainty what might be the condenser drain; any tips/hints on where to find it? Directly over the transmission, usually one on each side. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Plugged condensate drain. On the W123, the hose is dead center over the tranny, a real pain to reach, just about where your knee is driving. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
hi Peter! thanks; i'll be sure to check it out. cheers! e Peter Frederick wrote: Plugged condensate drain. On the W123, the hose is dead center over the tranny, a real pain to reach, just about where your knee is driving. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] windshield misting over after A/C shutdown ('85 300D)
hi all! i've got a curious symptom that i'm hoping someone can point me to the cause of: lately, anytime i shut off the A/C after using it while driving, moisture vapor becoming condensation blowing onto the windshield becomes bad enough as to impede visibility. any ideas as to what this is a symptom of, and/or what i might look for? cheers! e ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
I'm assuming it's on the inside? If so then this is a symptom of one of
two issues. One is a slow leak in the heater core and the other is a
plugged drain line, allowing condensate to pool inside the unit.
If its on the outside then it's just moisture condensing on the outside
of your cold glass.
Tom
www.kegkits.com
Original Message
From: ernest breakfield [EMAIL PROTECTED]
Sent: 07/24/07 11:02 AM
To: Mercedes Discussion List mercedes@okiebenz.com
Subject: [MBZ] windshield misting over after A/C shutdown ('85 300D)
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
hi all!
i've got a curious symptom that i'm hoping someone can point me to
the cause of:
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield becomes
bad enough as to impede visibility. any ideas as to what this is a
symptom of, and/or what i might look for?
cheers!
e
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
lately, anytime i shut off the A/C after using it while driving, moisture vapor becoming condensation blowing onto the windshield becomes bad enough as to impede visibility. any ideas as to what this is a symptom of, and/or what i might look for? Some degree of that can be normal, depending on atmospheric conditions. But I would first check to see that your AC is not blowing up through the defroster vents, chilling the glass so that when you shut it off and the natural evaporation of the un-drained condensate (of which there is always going to be some) re-condenses on the cold glass. The AC's not supposed to blow up the defroster vents unless you select the button next to DEF. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Low Freon. Your A/C compressor isn't kicking on during specific weather that
can cause the windows to condense up. Charge the A/C.
James Zavesky
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Jim Cathey
Sent: Tuesday, July 24, 2007 9:16 PM
To: [EMAIL PROTECTED]; Mercedes Discussion List
Subject: Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
lately, anytime i shut off the A/C after using it while driving,
moisture vapor becoming condensation blowing onto the windshield
becomes
bad enough as to impede visibility. any ideas as to what this is a
symptom of, and/or what i might look for?
___
http://www.okiebenz.com
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Pretty much normal in summer -- when the engine is shut off, the monovalve goes open, allowing hot coolant to circulate through the heater core as the engine cools. in cool, damp weather (summer evenings in particular), the windshield will be cool enough that the condensation evaporated by the now hot heater core will cause misting on the inside. Should vanish shortly after you start up again and the evaporator cools off and blows dry air. Usually worse if you have the button next to the defrost pressed. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] windshield misting over after A/C shutdown ('85 300D)
Ernie - Consider this...you have warm moist air inside your car. When it gets near something cold, the moisture in the air changes state from a gas, water vapor, to a liquid, water. You have seen this on the outside of a glass of ice water. If the warm air inside the car is circulated through the Air conditioning unit, the change of state takes place on the outside of the very cold evaporator inside the unit under your dash. If the A/C is off then the evaporator is no longer that cold so water does not condense on it. Ok so now you have the warm moist air in your car but there is a cool breeze blowing on the windshield, thus the change of state takes place on your cool windshield and the windshield fogs up. Barry anytime i shut off the A/C after using it while driving, moisture vapor becoming condensation blowing onto the windshield becomes bad enough as to impede visibility. any ideas as to what this is a symptom of, and/or what i might look for? ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
