E36 318is Coupe (m42 Engine) - BMW Forum - BimmerWerkz.com

3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 11-23-2004, 02:55 PM Thread Starter
Join Date: Nov 2004
Location: Preston - England
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
munky999 is an unknown quantity at this point
(Thread Starter)
Thumbs up

When I bought my 3-series in January, the sales man told me that he had just changed the thermostat and that he thought some air was still trapped in the heater matrix. The Result? when the engine is at idle the heater blows cold air into the cabin and when the revs are above idle we have warm air again. Especially annoying in winter!
I have recently had to change the coolant as the bleed valve cracked and leaked coolant. After aquiring a new bleed valve I set about re-filling the coolant system to exacting instructions from my Haynes Manual. The result you may ask? exactly the same as before!!!!!!!!!!!!!!!!!!!!!!!!

Why is this happening? It is truly annoying! People have said to me that it could be the result of a faulty water pump but I doubt this as my car has never over-heated since buying it.

Does anyone have any handy hints and tips about good ways to the bleed the coolant system correctly?

And does anyone know why the M42 engine doesn't have a bleed valve on the thermostat housing as all other four cylinder engines in the range do? ghead
munky999 is offline  
Sponsored Links
post #2 of 4 (permalink) Old 11-23-2004, 03:23 PM
2nd Gear Member
Join Date: Sep 2004
Posts: 358
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
bad man working is an unknown quantity at this point
I think the diagnosis is spot on it's air locked the way to bleed it: from cold or make sure there's no presure in the system remove the rad cap and take the bleed screw right out tip coolant (50%mix) into the rad until it runs out of the the bleed hole, keep fill until no more air comes out. catch the bleed screw by a couple of threads with the rad cap still of start the engine coolant should run out off the loose bleed screw and the ecoolant level will drop any remaining air will be expelled through the bleed screw. when the level gets to the mark tighten the the screw (don't over do it they snap easy) you should now have a strong jet of collant coming into the rad just below the rad cap seat. it don't need the screw in the stat they normaly bleed OK to check it's bleed and or the water pumps OK check for this jet into the rad pick the revs up a bit if your not sure. if you have the problem check the stat yourself maybe he took it out.
bad man working is offline  
post #3 of 4 (permalink) Old 11-23-2004, 03:47 PM
Neutral Member
Join Date: Apr 2004
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Black318IS is an unknown quantity at this point
Have you checked the dial above the stereo? because i had that smae problem until i relized that the dial was on cold and not hot even though i had the temperature all the way up, it still blew out cold air. I know it sounds stupid, but it could be it
Black318IS is offline  
post #4 of 4 (permalink) Old 11-23-2004, 04:05 PM
5th Gear Member
Join Date: Mar 2004
Location: Richmond Hill, Ontario
Posts: 1,169
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Autotechnica is an unknown quantity at this point
Bleed valve for the coolant should be on the block under the car.

<u>1994 M-Technic M42 Saloon - Trillium Chapter - 5130</u>
Stock - 2866lbs Current - 2670lbs
<a href='http://www.geocities.com/mtechnik42' target='_blank'>- VIEW MY MODS AND PICS</a>
<a href='http://www.automobile-technik.com' target='_blank'>- PARTS FOR SALE</a>
&lt;img src=&quot;http://www.maxbimmer.com/forums/atta...tc=1&quot;&gt;
Autotechnica is offline  
Sponsored Links

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
*The E36 Turbo Thread* SpeedInfusion 3-Series (E36) 9 10-16-2005 10:10 PM
E36 318ic engine question n1knightmare 3-Series (E36) 9 09-19-2005 04:20 PM
Location of ICV on M44 318iS engine Rich328 3-Series (E36) 5 09-16-2005 10:55 PM
'94 318is Uneven Idle. Check Engine Light On ultraviolet353 3-Series (E36) 8 12-20-2004 12:17 AM
BMW P83 Engine triggrhaapi Bimmer Talk/Motorsports Talk 0 07-21-2003 03:03 PM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome