Go Back   United Bimmer Community - BMW Forum > UnitedBimmer-General BMW Topics > BMW General Discussion
FAQ Members List Calendar Advertise With Us Mark Forums Read

BMW General Discussion Sponsored by: AutohausAZ.com
Talk about BMWs in general. Post official news, Bangle flames, or anything else related to BMW.

Reply
 
Thread Tools
Old 09-14-2012, 08:50 AM   #1
eddieq

Name: eddieq
Title: United Newb
Status: Offline
Join Date: Sep 2012
Location: paisley
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 e39
Angry BMW E39 528I 1997 overheating issue

Hi guys,

60k miles
car is in mint cond, everything works

Hope you are able to help me here, don't know if this is an air lock.

Here is my problem, my car overheated, I took the car to the bmw garage where they replaced:

The thermostat and thermostat housing
Waterpump

Few weeks later car over heated again, this time same garage done the following:

Pressure tested the cooling system, car passed this twice
They also done a block test which the car passed

They bled the cooling system and all was ok again for a few weeks.

Now the car has overheated again and I can't seem to find out what is going on.
I just seem to have loads of air in the system, has anyone else had this issue?

Last edited by eddieq; 09-14-2012 at 09:10 AM..
  Reply With Quote
Old 09-14-2012, 10:55 AM   #2
kung Fu Master

Name: kung Fu Master
Title: United Newb
Status: Offline
Join Date: Jul 2010
Location: england
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1998 220i touring
might be your viscous fan.
  Reply With Quote
Old 09-15-2012, 01:05 AM   #3
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
How do you know you have "loads of air in the system"?

Check your fan clutch. Roll up a small newspaper and with the car running slowly insert it into the fan blades. If the newspaper stops the fan, then your fan clutch is gone. The fan will spin freely with the engine running giving the appearance its working, but wont provide any cooling power to the engine.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 09-15-2012, 02:42 AM   #4
eddieq

Name: eddieq
Title: United Newb
Status: Offline
Join Date: Sep 2012
Location: paisley
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 e39
Thanks for your messages..
When I try to bleed the air out of the system, there are loads of bubbles coming out of the beeld screws ;-(, the stream of bubbles never seems to end.

I just did the test which you suggested and my fan stopped right away. Looks like I will need a replacement, thanks ;-)
  Reply With Quote
Old 09-15-2012, 07:03 AM   #5
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
For bleeding, try elevating the car. Air rises, so your more likely to get more air out of the system with the engine elevated a few inches.

To bleed the system run the car for several minutes until the temp is within normal range. Then turn the heater on MAX. This will cause the thermostat to open circulating more coolant through the system. Then you can open the bleed screw.

My fan clutch has failed too and my car was the same way. It started overheating until i got onto the highway or drove pretty past. In normal traffic it would overheat pretty quick. Its good to catch early because in some cases it can cause the fan to disentegrate causing massive damage and ripping through hoses. Hit up www.bimmerspecialist.com for a replacement. I find their prices to be quite competitive. I use them for all of my OEM parts.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 10-22-2012, 08:23 AM   #6
eddieq

Name: eddieq
Title: United Newb
Status: Offline
Join Date: Sep 2012
Location: paisley
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 e39
Still Overheating

Hi, I'm really in need of some help here ;-(

My BMW E39 1997 523I Saloon has an overheating issue which has become a bit of a puzzle.

Ok, so things which have been changed.

thermostat housing, thermostat (thermostat has been changed twice now)
waterpump.
viscous fan
expansion tank and cap

Tests performed and past: pressure test / combustion test / leak down test / sniff test all have been past with no problems.

The only thing which hasnít been replaced is the radiator and some hoses.

I have checked the radiator myself, when the car overheated the top radiator hose was really hot however, the radiator seems to have cold spots on it, and the bottom hose is stone cold, the coolant is not circulating therefore im thinking the radiator is blocked? I donít know what else to do.

Do you have any clue as to what could be my problem? I donít want to spend much more cash on this ;-(
  Reply With Quote
Old 10-23-2012, 12:33 AM   #7
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
You have replaced everything that would normally cause an overheating issue. The coolant entering the radiator should be hot, and the coolant leaving should be cold, to cool the engine. When you feel and squeze the hoses you should be able to feel the coolant in the hose, and with the cap off you will notice a slight rise in fluid level. Should you just feel air, then their is an issue.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 10-23-2012, 02:25 AM   #8
eddieq

Name: eddieq
Title: United Newb
Status: Offline
Join Date: Sep 2012
Location: paisley
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 e39
BMW E39 528I 1997 overheating issue

Thanks for your reply..I had the system pressure bled where a pressure tester was put onto the expansion tank, I was with the mechanic when this was done, all the air was bled from the system, only had coolant coming from the bleed screws.

When the car overheats Iím getting steam from the bleed screws, the top hose is roasting where I canít touch it, only a few patches of the radiator are hot the rest is stone cold, the bottom hose has no heat in it at all.

Only thing I can think of is a blocked radiator, I removed the bleed screw at the bottom of the radiator and white gunk came out then coolant started to flow. the radiator is only 3 years old ;-(.

I donít want to go back to the garage as Iím being charged a fortune every time Iím there and it seems they are just guessing.
  Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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 Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Glad to be a member stanold1207 Introductions and Greetings 2 01-05-2011 07:51 AM
Z3 steering problem at low speed 499460aq Z Series (Z3, Z4, Z8) 6 01-02-2011 03:28 PM
My E30/S50 Turbo build matimus Forced Induction 44 07-12-2009 11:55 AM
Kinda raced a cocky 525i Rooz Kill Stories 39 01-22-2008 09:07 AM
My car in the royal car list. zeaq328i United Off Topic  **FOR MEMBERS ONLY** 22 08-19-2006 06:37 AM


All times are GMT -5. The time now is 08:37 PM.

A vBSkinworks Design

 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright © 2005-2013 UnitedBimmer.com