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 02-25-2001, 05:07 PM
Jman
Guest
 
Posts: n/a
Dear Forum,

Have a 91 300E 4MATIC. The outside temp. right now is around 5 degree's C. Car is running at 120 degree's C with a short 5 minute run around the neighbourhood. The fans on both sides of the radiator (fore and aft) are working. When i turn the car off i can hear fluid noise from the radiator, does that mean the fluid is still circulating. In an ideal environment where the radiator is full of coolant isn't it impossible to hear the fluid circulate in there because it should technically be full of fluid?

Since the fluid is still running i dont think it's my water pump, i dont see steam so i dont think it's a leak in the hose.

What the Hell can it be?
(I will check the oil when the car cools down)


Jman
Reply With Quote
  #2  
Old 02-25-2001, 05:54 PM
Ashman's Avatar
Registered User
 
Join Date: Sep 2000
Location: Sherman Oaks, CA
Posts: 4,748
I'm not a tech, but here is what I would look at if it were happening to me.

1. Flush coolant and replace with original mb coolant at the correct water to coolant ratio.

2. Check thermostat for proper operation.

3. check for bad hoses.

4. check radiator water filler cap and replace if necessary.

5. check for proper operation of the water pump

6. check that fan and fan clutch are operatng properly.

7. check for worn or slipping belt.

I wouldn't do it necessarily in the order I listed.

I would start with checking everything, then flushing, then checking more mechanical items like cap, thermostat, pump, etc.

Alon
__________________
'92 300CE - Sold
2004 C240 - C7 Wheels - Android Radio
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.
Reply With Quote
  #3  
Old 02-25-2001, 06:04 PM
MikeTangas's Avatar
Senior Member
 
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Have you checked your coolant level? If the level is low, what you are hearing could be what coolant you have left boiling. Has your heater been working properly the past week or so? If coolant is low, the heater may not work properly. If the level is low, then you have to find out why, leaks, boiling off, never checked???
__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.
Reply With Quote
  #4  
Old 02-25-2001, 07:19 PM
Registered User
 
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Replace the thremostat. The noises you hear is the coolant boiling inside the cooling system.
__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
Reply With Quote
  #5  
Old 02-25-2001, 08:03 PM
Jman
Guest
 
Posts: n/a
Thanks guys,

I checked an hour later and discovered that the coolant was half-way below the indicator level ! I will go to the dealer tomorrow to get more coolant, but what was there so little fluid left? Boiling off, what would cause this?

Thanks for the recommendations

Jman
Reply With Quote
  #6  
Old 02-25-2001, 08:09 PM
Registered User
 
Join Date: Jan 2000
Location: New Bedford, MA USA
Posts: 1,583
Say hey, it's probably the thermostat. If tha't not it then it's the radiator core plugged up or the water pump (doubtful). I'm betting on the t-stat. If it doesn't open, the coolant in the block just percolates away. Be careful with the MK103, hi heat is flirting with a blown head gasket..
__________________
Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.
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
Aux. Fan temp & mystery?? toknow Tech Help 4 08-01-2003 06:09 PM
Auxiliary Fan Question JBoggs Tech Help 9 07-30-2003 11:07 PM
Cold Temp, R16 resistor, High RPM – HELP! AtlBenz Tech Help 2 07-19-2003 01:49 PM
two temp sending units? 617 turbo coachgeo Diesel Discussion 6 07-03-2003 12:07 AM
High Engine Temp mrroche Tech Help 4 08-14-2000 11:27 AM



All times are GMT -4. The time now is 11:46 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