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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #31  
Old 08-14-2005, 05:03 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
Ok, I see what you mean.
Yes I have 1 single serpentine belt.

__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #32  
Old 08-14-2005, 05:45 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
Ok, I see what you mean.
Yes I have 1 single serpentine belt.
OK, yes, I got confused with vehicles. I was attempting to help another fellow with an '85 SD.

So, the situation remains. You need a relay to eliminate the Klima, or, you need to do further testing to see if the Klima's signals are correct.

Or both.
Reply With Quote
  #33  
Old 08-14-2005, 09:02 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
I would love to do further testing
I'm going down to the store right now to get couple of relays
1 alarm system
2 auto antena
3 cruise control.
I will be back in half and hour and check this
Thanks man
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #34  
Old 08-14-2005, 10:37 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
ok back from the store,no relays
cruise control still not working, changed all the vacuum hoses almost that I can see, it worked for about 10 minutes, 3 days ago then I switched it off comming off the freeway and never came back on, there is also a vaccuum hose connector that comes right out of the injection pump that broke, I got some regular vacuum line in it but I'm going to replace it with the right part tomorrow from the dealer. Cruise control fuse is fine, maybe still a vacuum problem
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #35  
Old 08-14-2005, 10:53 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
ok back from the store,no relays
If it were me, I would have said:

"OK, back from the store, no relays."


Reply With Quote
  #36  
Old 08-15-2005, 12:33 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
Ok, so let's get back to the "more tesing" stuff
What do I do next?
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #37  
Old 08-15-2005, 12:58 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
Ok, so let's get back to the "more tesing" stuff
What do I do next?
We can check the output signal from the compressor speed sensor:

Start the engine.

Jump sockets 5 and 7. The compressor will start.

Measure ac voltage across sockets 9 and 11. You need a sensitive meter for this. The nominal value is .3V

If you don't get close to this value. shut the engine off and measure the resistance across these same sockets.

The proper value is 530 to 650 ohms.


My data comes from the W126. However, I'd bet the W124 is the same.
Reply With Quote
  #38  
Old 08-15-2005, 01:53 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
Quote:
Originally Posted by Brian Carlton
We can check the output signal from the compressor speed sensor:

Start the engine.

Jump sockets 5 and 7. The compressor will start.

Measure ac voltage across sockets 9 and 11. You need a sensitive meter for this. The nominal value is .3V

If you don't get close to this value. shut the engine off and measure the resistance across these same sockets.

The proper value is 530 to 650 ohms.


My data comes from the W126. However, I'd bet the W124 is the same.
I get .2V on both of them
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #39  
Old 08-15-2005, 02:33 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
I get .2V on both of them
Yeah.......I got the same thing on the SDL. I believe it is probably OK.

Now do the same check on sockets #1 and #2 with the engine running.

This tests the engine RPM signal from the EDS. Nominal value is 2.8V AC voltage, at idle.
Reply With Quote
  #40  
Old 08-15-2005, 02:39 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
Quote:
Originally Posted by Brian Carlton
Yeah.......I got the same thing on the SDL. I believe it is probably OK.

Now do the same check on sockets #1 and #2 with the engine running.

This tests the engine RPM signal from the EDS. Nominal value is 2.8V AC voltage, at idle.
Hey Brian
I get 0.0 on no.1 and 6.0 on no.2
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #41  
Old 08-15-2005, 02:45 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
Hey Brian
I get 0.0 on no.1 and 6.0 on no.2
You should be measuring across #1 and #2. Only one value for a result.
Reply With Quote
  #42  
Old 08-15-2005, 03:27 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
across 1 & 2 the value is 6.0
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #43  
Old 08-15-2005, 03:35 PM
Banned
 
Join Date: May 2002
Location: Blue Point, NY
Posts: 25,396
Quote:
Originally Posted by baraboom
across 1 & 2 the value is 6.0
That's OK as well. The value has to be greater than 2.8V.

So, both speed sensors, check out.

There is only one other possibility, other then the Klima, itself.

Put the Klima back in place.

Find the low pressure switch on the dryer. There are two switches on the dryer. The upper switch, in the center of the dryer will typically control the aux fan (on the W126).

The lower switch should be the low pressure switch.

Jump this switch and see if the compressor will start with the Klima in place, the engine running, and the middle button pressed on the PBU.

If the compressor still won't engage, then I'm fairly convinced that the Klima is NG.

Like I said previously, if you get a relay, we can bypass it.
Reply With Quote
  #44  
Old 08-15-2005, 03:43 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
Ok
I will get a relay but let me know exactly what kinf of relay from Auto Zone or Kragen.
like what numbers on it etc
ICE CUBE relay right?
on the second part I have no idea where or what the dryer is.
where is it located? how does it look like?
thanks man
__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
Reply With Quote
  #45  
Old 08-15-2005, 03:56 PM
baraboom's Avatar
Registered User
 
Join Date: Aug 2005
Posts: 78
kn
I know what the dryer is now
the lover switch has a brown and white wire, right?

__________________
1987 300SDL
__________________
Pic of this car:
http://www.gigapipe.net/300SDL/index.htm
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
No turbo boost '85 300D AMH Diesel Discussion 8 05-21-2005 11:32 AM
Opinions on purchasing a 1987 300D swogee Diesel Discussion 12 05-03-2005 10:27 AM
90 300D - Tough fuel problem mike456 Diesel Discussion 8 12-24-2001 07:27 AM
1987 300D Turbo new member TurboD Diesel Discussion 4 01-08-2001 10:52 PM
1987 300D Turbo Questions clmiller Tech Help 7 11-17-2000 04:30 AM



All times are GMT -4. The time now is 11:44 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page