Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-21-2002, 02:18 AM
Registered User
 
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
Only heat coming out of the vents 190E 2.3

My heater seems to be stuck in the on position. I only get heat out of the vents and when i select cold air on the thermostat...nothing. My A/C won't turn on either, i can't get the compressor to turn on. It seems my whole climate control system is pretty dodgy. I don't think the vents open and close either when i press the different buttons to select the different vents. Should i just replace the climate control system or is there an easier way to fix these problems? This is out of a 1986 190E 2.3L 8V. Thankyou for your help!!!
__________________
George Carstens
Reply With Quote
  #2  
Old 04-21-2002, 01:04 PM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
I have EXACTLY the same problem! I have not looked into it, but now that it is getting warm out, it is time. I suspect that it is vacuum controller behind the glove box.

Could someone here confirm this as a good starting point. How can this be tested before buying a replacement?
__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

Reply With Quote
  #3  
Old 04-25-2002, 05:59 AM
renok7's Avatar
Registered User
 
Join Date: Nov 2001
Location: Montréal
Posts: 95
Have you had your cooling system checked. You might have a freon leak.
__________________
Reno

'93 300E 4Matic
'98 Nissan Altima
'00 Yamaha Road Star Silverado
Reply With Quote
  #4  
Old 04-26-2002, 12:41 AM
Registered User
 
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
I need to get the heat off first before i try to make the air conditioning work.
__________________
George Carstens
Reply With Quote
  #5  
Old 04-26-2002, 02:13 PM
Registered User
 
Join Date: Jun 2001
Location: Indiana
Posts: 206
Question

My 86 190E has the exact same problem also. I just got mine out yesterday and put the battery back into it (I dont use it in the winter) but AW, I was going to ask the same question. Where do we need to start looking for the root(s) of the problem?
__________________
1986 190E 186K (For Sale)
(Maroon, Tan leather)
1996 C280 Sport 208K
(Brilliant Silver, Black Leather)
2002 CLK430 Sport 45K
(Brilliant Silver, Gray Leather , Birdseye Maple)
Reply With Quote
  #6  
Old 04-26-2002, 03:39 PM
Registered User
 
Join Date: Jan 2000
Location: Fl
Posts: 140
maybe...

I am not an expert on this but here are some things the fixed similar problems in my '86 300E.

-hot air even with ac compresor on; replaced monovalve which controls wether coolant is going to your heater or not.

-air comming from every vent; vacum servos replaced, big job, dash has to come off (replaced evaporator while at it).

-A/C not responding, hot air; replaced climate control box.

Like someone before said, I would check to see if you have a freon leak first.

I don't know how things are up north, but here in florida the vacum servos rot after 10 yrs or so.

hope this helps...
Reply With Quote
  #7  
Old 04-26-2002, 03:59 PM
Banned
 
Join Date: Nov 2001
Location: Cape Cod Massachusetts
Posts: 1,427
Thumbs up Monovalve Maybe!!!!

Monovalve?
Sounds like could be a Monovalve issue and since that is the easiest to eliminate (5-10 minutes and a screwdriver) that would be a good place to start. You can get step by step instructions with pictures here:

http://mbdieseldiy.tripod.com/index.htm

Look under Monovalve replacement, its for a 126 but yours can't be much different! FastLane's got the repair kit if you need it. Good Luck!




Reply With Quote
  #8  
Old 04-29-2002, 09:53 PM
mplafleur's Avatar
User Friendly
 
Join Date: Sep 2001
Location: Lathrup Village, Michigan
Posts: 2,939
I know my problem is not freon. Mine is fully charged and having the AC on makes the hot air from the vents SLIGHTLY cooler. The charge lines are cold and condensing.

My thought is that the problem is the vacuum switchover valve. But this is only an educated guess.
__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

Reply With Quote
  #9  
Old 08-09-2003, 02:36 AM
haasman's Avatar
Registered User
 
Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097
Michael

Did you ever solve this? Was it the mono valve?

Haasman
__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
wtb: 190E 2.3 86 - 93 without engine/trans Benz300 Mercedes Cars For Sale 2 06-03-2004 10:57 PM
86' 190e 2.3 vs 88' 2.3 engine pistolpete5113 Tech Help 5 12-03-2002 03:07 PM
1991, 190E, 2.3 Hot air from the side vents Omran Tech Help 2 07-29-2002 08:32 PM
'91 190E 2.3 exhaust vibration sbourg Tech Help 1 08-19-2001 05:33 PM
Heat coming from one side only... yal Tech Help 3 12-22-2000 12:32 PM



All times are GMT -4. The time now is 02:01 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page