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#1
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Very weak defrost and floor heat
I have a 1995 E320. My fans seem to work fine. At least there is plenty of noise that sounds like the fans should be blowing air. I get the best flow from the side vents and I can feel that the air is warm, but there is just very little flow from the defroster and the floor vents. Even on high and with the controls set to all defroster, I don’t get much flow from the defroster at the windshield. I tried every possible setting for auto, max and low speed fan, as well as the different settings for all defrost, half and half defrost and floor, and mostly floor.
Let me see, I also have a rather loud slapping sound from something closing in the dash when I start the motor in the cold. I have had that for quite a while, even before I noticed the loss of the flow of air. I figured that was a fresh air supply vent slapping closed that limited outside air until the car warmed up a bit and maybe some foam padding had deteriorated. I did have decent air-flow in the past, even when I had the loud slapping. Anyway, please help me understand what might be causing me to have low air flow from defroster and floor vents, even though I have a fan that sounds like it is blowing and the air seems to be warm. This is not a good situation going into a Pennsylvania winter. I just spent $1200.00 to get my front spring perches re-welded onto the car this week, so this is not a welcome surprise. Thank you everyone, Ken
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I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#2
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http://www.peachparts.com/shopforum/diesel-discussion/35373-w124-climate-control-vacuum-pod-replacement.html#post197605
Unfortunately, I think mine is probably the "pods", as discussed by gsxr at the link above. I sure wish gsxr lived closer to me. I would definitely like to be his friend and get help with my W124. The slapping is probably a damaged diverter flap that may not really be causing the problem. I bet I am going to have to have the dash pulled and all of the pods replaced.
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I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#3
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First suspect for low blow airflow on 124.032 chassis is cabin air filters are plugged solid.
http://catalog.peachparts.com/ShopByVehicle.epc?q=1995-Mb-E--3--0--Sedan-Climate--Control&yearid=1995%40%401995&makeid=MB%40%40MB%40%40X&modelid=E%2D320%2D001%40%40E+320+Sedan&catid=R%40%40Climate+Control&subcatid=R2060@@ACC+Cabin+Filter&mode=PA Reason is b/c owners don't even know they are there , so they have never been changed ...also the reason so many Blower Regulators burn up on that same chassis..... Check them first..under hood, under WWiper arm
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A Dalton |
#4
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Thank you for the tip. I have read about the filters. They were replaced once in the past at a routine dealer service. At least there was a bill for doing the job as part of the service. That was a while ago, however, and I don't get service at the dealer anymore.
I will certainly be hoping it is the filters, so I can get away without going into the dash. Thank you
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I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#5
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Pull them out and then turn on the blower...that will tell you right away if they are the cause of limited airflow.
Commonly overlooked item.
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A Dalton |
#6
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If the fan motor has ever been replaced, and the squirrel cage blower wheels installed backwards, flow will be low.
Jim
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14 E250 BlueTEC black. 45k miles 95 E320 Cabriolet Emerald green 66k miles 94 E320 Cabriolet Emerald green 152k miles 85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles |
#7
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True, but he states ... While you have the filters out, spin the fan by hand a make sure it spins freely...if not, clean it up and use some ATF on the bearing/bushes...the fan could be dragging and not getting up to speed. You will know more after removal of the filters. Is that 904 paint code ???
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A Dalton Last edited by Arthur Dalton; 12-12-2008 at 07:56 AM. |
#8
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Main vent?
Today I tried the re-circulation switch and it seemed to make a difference. When I went back to no re-circulation, it seemed like I was still getting the better flow from the floor vent and the defroster. If the recirculation switch temporarily solved the problem, does that give any of you a better idea of what the underlying problem might be?
On another site, someone suggested that it sounded like my main air vent wasn't opening as it should. It seems that might be something that could be controlled by the re-circulation switch. The poster also said the main air vent was accessible from under the wipers, so that again would be better than going after the pods in the dash. Do any of you have thoughts about the chance that it is the main vent, which might be controlled by the re-circulation switch?
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I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#9
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The filters are in the main intake...recirculate does not use the filters ...so, again...Check the Filters. Not saying the filters are the problem..but that is where you want to start b/c that is the easiest and most probable.
Everyone wants an answer but does not want to look........
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A Dalton |
#10
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I hear you Arthur
Quote:
Bye the way, do you think the re-circulation switch bypasses the filters? It seems that it could, since the engineers may have figured you wouldn’t need to filter the air that is already in the car.
__________________
I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#11
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I have done many of those filters and they are way up on top, so I do not see a way for cabin air to recirclate back up to that point....the next generation of E320 [ 210 chassis] did away with them and actually put them in the cabin [ under glove box area] so that they would still filter cabin air regardless of recirc or not ..they also added a charcoal filter , which yours does not have ...yours are simply paper intake dust air filters .
If you take them out . see of there is a flapper there for recir., but I don't remember ever seeing any .... There is a DIYer tutorial in the archieves for changing them...not a bad job once you do one...I suspect yours are clogged b/c every one I ever did was full of dirt and leaves. etc. ....prolly due to their under hood location ...not a real good set-up compared to the later chassis. Like I said, may not be the filters, but I would definately look there First..... Sure would be a lot of work if you dive into that dash only to find out later it was just restricted intake air b/c of a couple of dirty filters.....ya kno' ?? Again, is that 904????
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A Dalton Last edited by Arthur Dalton; 12-12-2008 at 11:04 AM. |
#12
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Woops
Sorry, I didn't see the question. I am also sorry, because I don't know the code. My car color is "Azure Blue", whatever code that is.
My car is also a "Special Edition", with the stainless doorsills, but I only use the stock Special Edition wheels for snow tires. It is a pretty car, as you will see below. Unfortunately one of my front spring perches failed last week and it cost about $1000.00 to have both front perches rewelded. It sounds like that is more common on the W210 than the W124, but my Indy said he has seen 4 or 5 himself in his shop. Luckily I wasn’t killed when the spring fell out on the ground and the car fell down onto the right front wheel. I was going very slow when the perch failed. Now it is the heater and defroster. Bye the way, I also have a leaky head gasket and front timing cover, a bit of a shift flair in 3rd to 4th gear shifts, a leaky AC compressor, and I have not yet replaced my wiring harness. I am accumulating some problems, but I do still love the car.
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I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#13
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It is Identical to one I own , except mine is 904 Midnight Blue...same interior. The pic looks like the Midnight , but pictures will fool the eye.
You may get rid of that flair with a simple modulator adjustment...and a filter change. I have never seen a bad perch on a 124 , but I guess that theory is now shot. Was it rust ?? ..and were on the perch did it let go ? Was there any sag pre-failure ?
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A Dalton |
#14
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Quote:
Quote:
I played with the vacuum modulator myself and also played with the bowden cable to try to minimize the flair. I learned about that on this forum. It helped, although the firmer shifts don’t really feel that great. At first I thought I liked the firmer shifts. It was like a racecar, but now I wonder if the firm shifts may be contributing to an earlier total transmission failure. I had to choose between firmer shifting or the flair. The flair can’t be good for the transmission either, so I am staying with the firm shifts. I am very careful about using reverse, since I was told that the reverse is most likely to fail and the pressures there can be considerable if you crank up the modulator too much. I only went about a half of a turn. I have my fingers crossed. I do think I was seeing some sag. I thought it was due to a leaky Bilstein HD shock, which has now been replaced with my original shocks. I guess I will try to get the HD shock fixed under warranty, although I am considering getting all new Sports. My car is lowered by about 1 inch, which is an intermediate drop and supposedly ok for either the HD or Sport shocks. I just wonder now if the slightly lowered stance contributed to the HD shock failure. I also wonder if the stiffer Eibach springs may have contributed to the perch failure. The firmer springs certainly were not providing the same level of “spring” to protect the perch. Like a lot of things about these cars, many folks doing the mods really have not owned the cars for years and years and years. I have had my car for about 12 years and it has been lowered for about 6 or 7 of those years
__________________
I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
#15
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Heated air temperature?
I just drove home from work in my car and played with all of the settings quite a bit. I don’t think my airflow is great, although it seems better than last night and since I played with the recirculation switch.
Now, however, I am wondering if the real problem is that the temperature of the air isn’t as hot as it was in the past. Could my air temperature decrease? If so, what would cause the problem? I think I have read things about heater cores going bad. I will have to do some searching on that, but I thought it wouldn’t hurt to ask. I can also test the temperature coming from a vent, like I have done for the AC. Do you know what temperature the heated air should be coming out of the vents?
__________________
I just couldn't give up on my 1995 E320. I think it might be like always going back to that same bad relationship with an ex girlfriend. You feel you love them too much, or you are just too stupid to know any better. Flickr slideshow of my 1995 E320 http://www.flickr.com/photos/24145497@N06/sets/72157616572140057/ |
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