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
  #31  
Old 07-26-2005, 03:51 PM
Registered User
 
Join Date: Jan 2000
Location: Houston, TX, USA
Posts: 121
The FUNNY thing is.... I "DO" work at NASA....

Just not on anything mechanical.... LOL!!
Probably a "good" thing....

And I'm guessing that the clearish coolant is probably the correct fluid, but it came with green coolant when I bought the car last month, and I just haven't thought about changing it back....
Would that be a "bad" thing at this point??
(No telling how long it's had the green coolant going through the system)

Thanks.

__________________
Barry
Reply With Quote
  #32  
Old 07-27-2005, 04:05 PM
Strider's Avatar
Registered User
 
Join Date: Sep 2003
Location: Washington
Posts: 83
Green fluid

If it is R-134A, aftermarket with a leak detector dye added, all you need is a black light to find out if this is what it is. It is a UV dye, so under a black light it will glow. I have a little battery powered flourescent UV blacklight lamp I use for this purpose.

As for the refrigerant remaining a liquid after coming out of the system...remeber that it also has disolved oil that is carried through the system as the refrigerant is pumped through. I have seen R-134A (NOT Freon! Freon is a Dupont brand name for R-12.) leaks that carried a significant amount of oil out with it (about a cup). So check to see if that fluid leak was slippery at all....

Otherwise...?? Water condensed from the air suddenly drained out the evaporator box? There happened to be a refrigerant leak before with the UV dye on the evaporator fins that got washed off with the condensed water?

Oh, final point...did the R-134A you added have a leak sealant additive as well?

Good luck.
__________________
On the plains of hesitation bleach the bones of countless millions who at the dawn of victory, sat down to wait, and waiting -- died
Reply With Quote
  #33  
Old 07-27-2005, 04:49 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804


Freon is a Trade name, but it does not designate R-12 .. It is Duponts
tag on all their CFC refrigerants .. R12 just ONE of their Freons.

.. but it is also common to see freon/refrigerant interchanged in the trade , along with ' ya need a shot of gas '..

But, Refrigerant is correct.. and adding some refrigerant w/leak sealer is not a recommendation I would agree with.
Reply With Quote
  #34  
Old 07-27-2005, 08:05 PM
Registered User
 
Join Date: Jan 2000
Location: Houston, TX, USA
Posts: 121
Hi Arthur;
The refridgerant is made (packaged??) by Genetron, and it's in a 30 lb. tank.
I've had it a few years, but at $140 delivered, it made sense to me to buy it like that....
But it makes no mention of any leak sealants, but then again it doesn't mention anything about leak detectors either...
I would have thought it would... and should....
But the refridgerant is a distinctly bright (almost neon-like) green, so I'm pretty sure that a leak detector agent is present.....

If they aren't terribly expensive, I will check into getting a black-light...
Might as well, it's already got the leak detector at work in there....

Some place like AutoZone or O'Reilly sell blacklights??

Thanks,
__________________
Barry
Reply With Quote
  #35  
Old 07-27-2005, 08:33 PM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Black light can be gotten in any electric supply house ..prob even a toy/hobbie store. Even ebay. I have one , but I don't use it as much as my Halogen detector..that way , I do not have to inject the dye.
Evap leaks are best spotted by sticking the detector up the drain after a long sit as the low side leaks faster when non use, as the low side has higher pressure then. Refrigerant is heavier than air , so it lays down at the drain connections ,if not disturbed. Sniffing up the drain tube after a long sit [even overnight]usually gets good results if there is a leak there.
A 30 pounder is nice to have b/c the last few weeks has seen a good price jump. Genetron is Honywells Trade name for refrigerants . If the one you have has the UV dye , it will say 134aUV on the bottle. If no dye , it will just say 134a. I guess Duponts Freon name caught on as it is common to hear Freon refered to as the refrigerant, no matter who made it .. you just don't hear someone say . "Hey, I think your aux. fan is not coming on cuz you are a little low on Genetron"...
You mentioned no oil feel in the liquid, so I assume it to be possible anti freeze from a pevious leak that may have just accululated in the bottom of the evap shroud and got washed out with the condensate that you now have from a working system.. specially as the drains are right on the sides of the tranny tunnel. Keep an eye on it and water drain is confirmation that you have a cold evaporator.. Good luck with the leak test


Last edited by Arthur Dalton; 07-27-2005 at 08:47 PM.
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
A/C Low and High side pressures? RockinWagin Diesel Discussion 22 06-05-2005 11:50 AM
A/C pressures MALK Tech Help 6 09-08-2003 11:56 PM
Need A/C pressures High and low for a 91 300E 3.0 DIYBenzer Tech Help 0 01-30-2002 09:15 PM
S500 a/c pressures questions fenix Tech Help 6 09-24-2001 01:36 AM
a/c pressures nickt Tech Help 4 08-09-2001 09:22 PM



All times are GMT -4. The time now is 03:09 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