No Heat - BMW Forum - BimmerWerkz.com
BMW Forum BMW Forum

» Auto Insurance

» Featured Product
» Wheel & Tire Center

Go Back   BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)
Register Home Forum Active Topics Gallery / Showroom Auto Loans Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-19-2009, 04:47 PM   #1 (permalink)
n00b
 
gwee1966's Avatar
 
Join Date: Oct 2008
Car: '91 318is
Posts: 16
Photos:
gwee1966 is on a distinguished road
No Heat

I just replaced the head gasket, profile gasket, thermostat, water pump and all the hoses in my '91 318is. The heat worked the first time I drove but now blows cold air. Any ideas?
gwee1966 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-19-2009, 04:51 PM   #2 (permalink)
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Car: 97'E36 2.8 w/Optional Sport Package
Posts: 3,325
Photos:
johnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the rough
Garage
Quote:
Originally Posted by gwee1966 View Post
I just replaced the head gasket, profile gasket, thermostat, water pump and all the hoses in my '91 318is. The heat worked the first time I drove but now blows cold air. Any ideas?
Is the engine running @ normal temp. or cooler than normal?


johnny,
__________________
______________________________________
_______________________97 E36|Conforti Software|M50 Manifold|AFE|Borla|H&R| Bilstein |Eibach|Rockford|3.15 LSD
____________________________________________http://www.cardomain.com/ride/3129109
johnnyBgood is offline   Reply With Quote
Old 02-19-2009, 05:54 PM   #3 (permalink)
n00b
 
gwee1966's Avatar
 
Join Date: Oct 2008
Car: '91 318is
Posts: 16
Photos:
gwee1966 is on a distinguished road
Hot!
gwee1966 is offline   Reply With Quote
Old 02-19-2009, 06:28 PM   #4 (permalink)
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Car: 97'E36 2.8 w/Optional Sport Package
Posts: 3,325
Photos:
johnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the rough
Garage
Quote:
Originally Posted by gwee1966 View Post
Hot!
You probaly have air in the system and the system needs to be bled....although the e30 is suppose to self bleed, there is a bleed screw in the thermostat housing....run the engine to operating temp. & crack open that screw & squeeze the upper & lower radiator hoses, to push out any air pockets, top off coolant as needed....


p.s. if this does not do the trick.......maybe possible stuck closed t-stat, to check this.....the upper & lower radiator hoses should be pretty much the same temp. when you feel them @ operating temp.
__________________
______________________________________
_______________________97 E36|Conforti Software|M50 Manifold|AFE|Borla|H&R| Bilstein |Eibach|Rockford|3.15 LSD
____________________________________________http://www.cardomain.com/ride/3129109
johnnyBgood is offline   Reply With Quote
Old 02-19-2009, 07:16 PM   #5 (permalink)
3rd Gear Member
 
k.sidlosky's Avatar
 
Join Date: Aug 2008
Location: San diego. CA
Car: 06 Ranger, 03 Accord, 96 m3 s52!
Posts: 667
Photos:
k.sidlosky is on a distinguished road
Send a message via AIM to k.sidlosky
I had to do that to mine when I first bought it, if that doesn't work look for the hoses that go intot he firewall they should be on the same side as the fuse box but diagonal to it and run some hose water through it, it usually works with chevys
k.sidlosky is offline   Reply With Quote
Old 02-19-2009, 08:36 PM   #6 (permalink)
2nd Gear Member
 
Join Date: Oct 2008
Car:
Posts: 493
Photos:
silversled can only hope to improve
I don't know what a profile gasket is...but it sounds as if you either need to bleed the cooling system or your heater control valve needs attention...they are closely related...good luck
silversled is offline   Reply With Quote
Old 02-19-2009, 08:39 PM   #7 (permalink)
n00b
 
gwee1966's Avatar
 
Join Date: Oct 2008
Car: '91 318is
Posts: 16
Photos:
gwee1966 is on a distinguished road
Thank you for your input. I already replaced the replacement(BavAuto) TStat w/ a factory one so I'm pretty sure thats not it. But I agree that the problem could be air trapped somewhere in the 2 million hoses on an M42!!! I have drained & refilled three different times during this project so I'll investigate your solutions before I go taking-off the whole mess again.
gwee1966 is offline   Reply With Quote
Old 02-19-2009, 08:43 PM   #8 (permalink)
n00b
 
gwee1966's Avatar
 
Join Date: Oct 2008
Car: '91 318is
Posts: 16
Photos:
gwee1966 is on a distinguished road
What can you tell me about heater control valves silversled? Have you had probs w/ that?
gwee1966 is offline   Reply With Quote
Old 02-20-2009, 01:26 PM   #9 (permalink)
5th Gear Member
 
BMWJNKY's Avatar
 
Join Date: Oct 2003
Location: Elk Grove, CA
Car: '89 E30 w/M50
Posts: 1,175
Photos:
BMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond repute
Send a message via AIM to BMWJNKY Send a message via Yahoo to BMWJNKY
I would stop draining and refilling the system, this is probably just going to get air back in the system. With the system filled and the heater temp control set to full hot let the car idle with out the radiator cap on it. It will take about 5min before the car will be warm enough to open the t-stat. Once the t-stat opens you should see the coolant level drop and air bubble up, keep filling the system until no more air comes out.
__________________
My M50 Powered E30 Page

BMWJNKY is offline   Reply With Quote
Old 02-20-2009, 08:52 PM   #10 (permalink)
2nd Gear Member
 
Join Date: Oct 2008
Car:
Posts: 493
Photos:
silversled can only hope to improve
yeah, I've had to replace the heater control valve on my 1988 325ic. It's in the console on the drivers side. It's electrically controlled and, while not a total bitch to replace, it is somewhat of a task. But it sounds to me as if you need to bleed the cooling system. Open the bleed screw on the thermostat housing, as mentioned, with engine cold, then slightly tighten it and let the engine warm up slightly. After the engine starts to warm up loosen the bleed screw again and wait until pure coolant runs out. And I cannot emphasize this enough, HAVE THE HEATER CONTROL ON FULL HEAT SETTING' while performing this process, otherwise the heater control valve will keep the airlock right where it sits.... good luck
silversled is offline   Reply With Quote
Old 02-21-2009, 07:24 PM   #11 (permalink)
5th Gear Member
 
BMWJNKY's Avatar
 
Join Date: Oct 2003
Location: Elk Grove, CA
Car: '89 E30 w/M50
Posts: 1,175
Photos:
BMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond repute
Send a message via AIM to BMWJNKY Send a message via Yahoo to BMWJNKY
There is no bleeder screw on the t-stat housing on an M42.
__________________
My M50 Powered E30 Page

BMWJNKY is offline   Reply With Quote
Old 02-21-2009, 07:59 PM   #12 (permalink)
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Car: 97'E36 2.8 w/Optional Sport Package
Posts: 3,325
Photos:
johnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the roughjohnnyBgood is a jewel in the rough
Garage
Quote:
Originally Posted by BMWJNKY View Post
There is no bleeder screw on the t-stat housing on an M42.
Then it should self bleed like you said......I just remember it being on my brother's 91' 325is......thought it might be on the 318i's too.

johnny,
__________________
______________________________________
_______________________97 E36|Conforti Software|M50 Manifold|AFE|Borla|H&R| Bilstein |Eibach|Rockford|3.15 LSD
____________________________________________http://www.cardomain.com/ride/3129109
johnnyBgood is offline   Reply With Quote
Old 02-21-2009, 08:32 PM   #13 (permalink)
2nd Gear Member
 
Join Date: Oct 2008
Car:
Posts: 493
Photos:
silversled can only hope to improve
well, OK, but that doesn't very advanced to me, having no bleed point available for a 1991 BMW engine. That almost seems backwards to me. There must be a bleed point somewhere. Heck, they had a bleed screw on my 1983 533i....gotta be somewhere to bleed the cooling system, but even so, if there are air pockets you still would still get heat occasionaly, it wouldn't lock like that. Sounds like something else to me then. Plus the temp gauge should jump with air pockets moving through the cooling system. Air heats up a lot quicker than coolant. That should be reflected on the coolant temp gauge on the dashboard, assuming you have one of those.
silversled is offline   Reply With Quote
Old 02-24-2009, 12:05 PM   #14 (permalink)
n00b
 
gwee1966's Avatar
 
Join Date: Oct 2008
Car: '91 318is
Posts: 16
Photos:
gwee1966 is on a distinguished road
It has to be air someplace. The heat has worked intermittantly. The bleed valve is right next to the expansion tank on M42.
gwee1966 is offline   Reply With Quote
Old 02-24-2009, 01:42 PM   #15 (permalink)
Help from over the pond
 
marti5's Avatar
 
Join Date: Sep 2008
Location: IPSWICH. U.K.
Car: E38 1997 728i Individual
Posts: 3,242
Photos:
marti5 is on a distinguished road
Sounds strange but try parking it up a hill/sloping drive nose up,then bleed the system, this does help, it does sound like air in the system.
__________________
VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL

I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!
marti5 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
No heat. I NEED heat! Handsome Rob 3-Series (E21, E30) 2 10-06-2007 04:28 PM
No Heat! chap0223 3-Series (E21, E30) 6 02-03-2007 09:27 AM
No Heat!! gonzonick 3-Series (E36) 11 03-01-2005 09:35 PM
heat? spieluhr 3-Series (E36) 2 09-02-2004 09:02 AM
Heat? ghettozn 3-Series (E36) 3 08-02-2004 08:22 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 12:32 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.