E30 Heat issues? - BMW Forum - BimmerWerkz.com
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.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 12-05-2009, 10:48 AM
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Posts: 3,325
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough
Garage
(Thread Starter)
E30 Heat issues?

Hey guys......I just replaced the heater control valve on my brother's 88' M3.
He initially had no heat, now he has heat @ idle & low speeds during driving.
Once we reach highway speeds, the heat starts to blow warm & then cold.
We also hear something that sounds like a door actuating from under the drivers side dash while driving. As soon as we slow down, the heat starts blowing hot.......I'm thinking that a fresh air vent is opening when it is not suppose too! The system is self bleeding & has been bled.

What is puzzling is that the door seems to be actuating & not blown open from forced fresh air....also see that there is a inside air temp sensor #8 in link below & if this has something to do with it. Has anybody had this same issue!

http://www.realoem.com/bmw/showparts...80&hg=64&fg=15

I am stumped..... Tommy, Kyle, Nick, & Dave.....anybody? any ideas?


jb

______________________________________
_______________________97 E36|Conforti Software|M50 Manifold|AFE|Borla|H&R| Bilstein |Eibach|Rockford|3.15 LSD
____________________________________________http://www.cardomain.com/ride/3129109

Last edited by johnnyBgood; 12-05-2009 at 11:09 AM.
johnnyBgood is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 12-05-2009, 11:36 AM
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Posts: 14,697
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice witeshark is just really nice
Seems like something is loose, but I have not seen this happen.

BMW

Sig by zeaq
witeshark is offline  
#3 (permalink) Old 12-05-2009, 08:36 PM
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Posts: 3,325
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough
Garage
(Thread Starter)
Quote:
Originally Posted by witeshark View Post
Seems like something is loose, but I have not seen this happen.
Yeah......tomorrow morning...... I am going to remove the center console & the HVAC entrance panel on the firewall & check around......


thanks Tom,

jb

______________________________________
_______________________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  
#4 (permalink) Old 12-06-2009, 06:07 AM
n00b
 
Join Date: Nov 2009
Location: Arizona
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ScottinAZ is on a distinguished road
Send a message via Yahoo to ScottinAZ
Quote:
Originally Posted by johnnybayonne View Post
Yeah......tomorrow morning...... I am going to remove the center console & the HVAC entrance panel on the firewall & check around......


thanks Tom,

jb
Seems to me, if you think the door is opening, then the control cable may have packed it in, or the connection to the blend door could be loose. Highly unlikely that the engine is running that cool, as you can easily check the engine temp by popping the hood and feeling either the line going to the heater core, or the rad hose itself. I think there is either an issue with the new control valve (if new, unlikely) or the blend door itself
ScottinAZ is offline  
#5 (permalink) Old 12-06-2009, 08:33 PM
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Posts: 3,325
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough
Garage
(Thread Starter)
Well, I found the culprit.........An E30 recall....a thermostatic bypass valve installed as per recall .......check out link below:

1988 BMW M3 Recall - Recall ID 4152

part # 64 11 8 391 926

jb

Attached Thumbnails
Click image for larger version

Name:	thermobypass.jpg
Views:	2115
Size:	94.5 KB
ID:	28756  

______________________________________
_______________________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  
#6 (permalink) Old 12-06-2009, 10:15 PM
You Can Has A Custom Title!!
 
german-speed-demon's Avatar
 
Join Date: Feb 2005
Posts: 8,829
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future german-speed-demon has a brilliant future
tell your brother to just give me his ///M.

R.I.P fast 6


Two wheels or Four, I'm happy as long as the throttle is pinned.
german-speed-demon is offline  
#7 (permalink) Old 12-06-2009, 11:06 PM
Crazy Fabricatin' Admin
 
gotKRAUT's Avatar
 
Join Date: Feb 2004
Location: Elk Grove, CA
Posts: 9,355
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute gotKRAUT has a reputation beyond repute
Send a message via AIM to gotKRAUT Send a message via MSN to gotKRAUT Send a message via Yahoo to gotKRAUT
hahaha that's exactly what i was going to say...

Kyle Sutherland

1995 BMW 540i/6:
The Calypso Beast Vid 0-70ish
1987 BMW 325es: Face & Butt Lifted/M50tu Swapped*Sold*
1985 VW Scirocco: Too many mods, money pit*Sold*
E34 Plate Filler Wanted!
gotKRAUT is offline  
#8 (permalink) Old 12-06-2009, 11:09 PM
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Posts: 3,325
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough
Garage
(Thread Starter)
Quote:
Originally Posted by german-speed-demon View Post
tell your brother to just give me his ///M.
If I replace that valve & his heat still does not work, he just might want to give it away....... I have had that console out 3 times already!

He sold a mint E30 325is, to buy this M3.......& I had to do a lot work to it......wheel bearings, struts, shocks,
control arms, bushings, tie rods, & links ....heater control valve, stereo head unit........

jb

______________________________________
_______________________97 E36|Conforti Software|M50 Manifold|AFE|Borla|H&R| Bilstein |Eibach|Rockford|3.15 LSD
____________________________________________http://www.cardomain.com/ride/3129109

Last edited by johnnyBgood; 12-06-2009 at 11:18 PM.
johnnyBgood is offline  
#9 (permalink) Old 12-21-2009, 08:57 PM
n00b
 
Join Date: Dec 2009
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
oxhead is on a distinguished road
You may have the heater core hoses reversed. Had the same problem in my 1991 318ic.
oxhead is offline  
#10 (permalink) Old 12-21-2009, 09:47 PM
Ich bin der Modifikator
 
johnnyBgood's Avatar
 
Join Date: Sep 2007
Location: Bayonne, NJ
Posts: 3,325
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough johnnyBgood is a jewel in the rough
Garage
(Thread Starter)
Quote:
Originally Posted by ScottinAZ View Post
Seems to me, if you think the door is opening, then the control cable may have packed it in, or the connection to the blend door could be loose. Highly unlikely that the engine is running that cool, as you can easily check the engine temp by popping the hood and feeling either the line going to the heater core, or the rad hose itself. I think there is either an issue with the new control valve (if new, unlikely) or the blend door itself
I think you are on to something........I was reading in the Bentley E30 Service Manual about this.......It seems that the blend door is closing off the heater core, due to vibration.....I will be checking this next......pretty sure this is it!

thanks,
jb

______________________________________
_______________________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  
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)
 
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
E30 electrical issues davE30 3-Series (E21, E30) 4 10-14-2009 03:51 PM
A/C and Heat issues dewight813 3-Series (E46, E90) 1 11-28-2008 03:01 PM
E30 DIY Heat Shield photoguy30523 3-Series (E21, E30) 3 06-29-2007 02:35 PM
Heat Sensor Issues BMW_VIC 3-Series (E46, E90) 2 08-10-2005 07:04 PM
heat? spieluhr 3-Series (E36) 2 09-02-2004 09:02 AM

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