Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

Reply
 
Thread Tools Display Modes
  #1  
Old 09-18-2008, 12:48 PM
xli_red_baron02 xli_red_baron02 is offline
Registered User
Location: Southern California
 
Join Date: Mar 2008
Posts: 15
Mein Auto: 88' bmw 325 es
Coolant light

My coolant light keeps coming on after a few minutes of driving. My coolant reservior is full. The car is running at normal temp and has never overheated. Any ideas as to what is up.
Reply With Quote
Advertisement
  #2  
Old 09-18-2008, 12:50 PM
ERIK J ERIK J is offline
when will the keg end?
Location: Minnesnowta
 
Join Date: Feb 2008
Posts: 552
Mein Auto: 325ix 325ix 325ix 325ix
The sensor may be bad on the coolant tank. Try swaping it out with a known good one, or replace it with a new one.
Reply With Quote
  #3  
Old 09-18-2008, 12:54 PM
xli_red_baron02 xli_red_baron02 is offline
Registered User
Location: Southern California
 
Join Date: Mar 2008
Posts: 15
Mein Auto: 88' bmw 325 es
when this is the case will the light always come on. When I start the car it is always off. Within 5 two 15 min of driving it does not go off. If the light has been on and I start the car warm the light will come on.
Reply With Quote
  #4  
Old 09-18-2008, 01:25 PM
Mr.///Matt's Avatar
Mr.///Matt Mr.///Matt is offline
Wrencher
Location: Sun Valley, Ca.
 
Join Date: Mar 2008
Posts: 438
Mein Auto: 97 ///M3, 89' is, 87 vert
yes it would,, remember when your running warm... your thermostat opens and then the water does get less.. change the sensor and youll be fine... look for leaks anywhere and also you might consider a pressure test
__________________
e30 325is 65k miles...
e30 327i vert.... hehehe weekend whore
E36 ///M3- UUC exhaust, Custom CAI, AA clutch, JB race Flywheel, and a 3.38 lsd diff...
Reply With Quote
  #5  
Old 09-18-2008, 01:27 PM
ERIK J ERIK J is offline
when will the keg end?
Location: Minnesnowta
 
Join Date: Feb 2008
Posts: 552
Mein Auto: 325ix 325ix 325ix 325ix
I have had sensors that fail and work only sometimes. they are odd sensors. pull out the sensor and see if the float moves freely.
Reply With Quote
  #6  
Old 09-18-2008, 01:48 PM
xli_red_baron02 xli_red_baron02 is offline
Registered User
Location: Southern California
 
Join Date: Mar 2008
Posts: 15
Mein Auto: 88' bmw 325 es
Thanks Matt super helpful. I am 98% sure there are no leaks.
Reply With Quote
  #7  
Old 09-18-2008, 06:43 PM
cliffmac cliffmac is offline
Banned
Location: chicago
 
Join Date: Sep 2008
Posts: 137
Mein Auto: 325ic
coolant temp gauge

if the needle on the dash board doesn't go hot I would not be too concerned about the overhead warning light, although it means something, most likely the overflow resevour tank sensor. I certainly would scope that out, possibly a little low but not to fret over. The dash board gauge is what counts....if it stays within acceptable level than the engine should be OK...good luck...cliff
Reply With Quote
  #8  
Old 09-18-2008, 07:57 PM
JohnMadd's Avatar
JohnMadd JohnMadd is offline
obsessed
Location: VA
 
Join Date: Feb 2008
Posts: 811
Mein Auto: 1989 325is 03 330i ZHP
Quote:
Originally Posted by Mr.///Matt View Post
yes it would,, remember when your running warm... your thermostat opens and then the water does get less.. change the sensor and youll be fine... look for leaks anywhere and also you might consider a pressure test
mine was similar in that the stat would open and fine but going around turns would drop the sensor just low enough to make the coolant light come on. I just filled the coolant above the full line to solve that. But soon after the sensor broke. hope my old problem helps you fix your new one.
Reply With Quote
  #9  
Old 09-20-2008, 03:03 AM
xli_red_baron02 xli_red_baron02 is offline
Registered User
Location: Southern California
 
Join Date: Mar 2008
Posts: 15
Mein Auto: 88' bmw 325 es
would a different light come on if the thermostat was not opening. I just drove it and it still comes up to temp but I am going on a little bit of a drive tomorrow and I don't want it to start overheating. We shall see what happens. Is there any way to tell if the thermostat is not working without going in and opening it up.
Reply With Quote
  #10  
Old 09-21-2008, 11:30 AM
xli_red_baron02 xli_red_baron02 is offline
Registered User
Location: Southern California
 
Join Date: Mar 2008
Posts: 15
Mein Auto: 88' bmw 325 es
I drove it yesterday for about 300 miles in the mtns with the AC on and it never overheated at all. SO i am guessing that it has to be the sensor.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)
Today's Posts Search
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



Forum Jump


All times are GMT -7. The time now is 09:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms