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-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-22-2014, 08:55 PM
crhenkel's Avatar
Registered User
 
Join Date: Mar 2001
Location: Decatur, Illinois, USA
Posts: 616
A/C help with my 2.3-16v

Hello,
I am having an A/C cooling problem with my 1986 w201 190e 2.3-16v.
It cools for a while then goes warm. After it sits off for a while it will go cold again. Seems like the compressor is turning off once it has been on for a while.
First a few questions. It has been converted to R134. How many pounds or how much R134 should be put into the system from a vacuumed down system? Also how much oil and what type of oil? I have hear that is takes about 10% less R134 over the R12 original. I am thinking that th system maybe overcharged since freon got added since it was filled. It may have a very slow leak, but it may not have the correct freon charge in it now. I have a set of gauges, a vacuum pump, and access to R134 freon. I just havent worked much on my Mercedes AC systems. I was working fine last season. When it does blow cold it blows decently cold and the volume of air is fine. It needs the fan motor replaced, have a new one but not done yet, due to a squeal and it doesnt always turn at the lower speeds until I move it to max fan speed to get it moving.
Christopher

__________________
Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red
Reply With Quote
  #2  
Old 07-23-2014, 12:45 PM
Holmesuser01's Avatar
Holmesuser
 
Join Date: Apr 2007
Location: Asheville North Carolina
Posts: 197
You should go ahead and replace your blower motor, since it does stick at low speeds... If you don't you will be replacing the speed control, too.
__________________
My first Mercedes Benz. 4/6/07.

1984 190E (201 024) 2.3L four.
Reply With Quote
  #3  
Old 07-23-2014, 12:51 PM
JamesDean's Avatar
Electrical Engineer
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
I'd get the gauges on it and see what the system is doing.

Could be low on charge?
Could be a switch problem (low/high pressure)
Could be evap temp sensor causing the climate control unit to kick off the compressor?

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
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




All times are GMT -4. The time now is 01:09 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page