2000 Bonneville-No Heat - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-22-2008, 12:51 AM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
frb9242 is on a distinguished road
Default 2000 Bonneville-No Heat

This is a 2000 Bonneville with manual controls. Blower operates properly. Radiator is full and both lines to the heater core are hot. The air conditioner works fine and its temp can be adjusted with temp adjust ****, but I have no heat at all. I checked the actuator on the driver'* side, which adjusts whether air comes out the defrost or vents and it works properly. I checked the air mix actuator that works off the temp adjust **** and it works correctly, too. The air inlet actuator does not seem to be working, but it seems that I should have some hot air even if this in the outside air position. Are there any other actuators that could be stuck to only allow the air conditioner air through? Any suggestions would be greatly appreciated. Thanks.
frb9242 is offline   Reply With Quote
Old 11-24-2008, 10:45 PM   #2
Member
Posts like a V-Tak
 
allenj3's Avatar
 
Join Date: Oct 2008
Posts: 42
Thanks: 0
Thanked 0 Times in 0 Posts
allenj3 is on a distinguished road
Default

Drive you car around for awhile and see if the temp gauge goes up. Let me know if it reaches a normal temp (around 195 degrees F) or if it stays low. I know in my 2003 bonnie the car will not allow the blower to operate until the engine reaches a certain temp (this may only be with automatic climate controls though). It'* possible that your thermostat is stuck open which could cause your car to not heat since the engine is not heating up to optimal temps.
allenj3 is offline   Reply With Quote
Old 11-26-2008, 09:58 PM   #3
Junior Member
Thread Starter
 
Join Date: Nov 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
frb9242 is on a distinguished road
Default

The blower works fine and I think the temp is OK, but the next time I take it out I will check it out. I don't know why I did not think of the thermostat. It has been a long time since I have worked on any of my cars. Thank you for reminding me of that potential problem, I hope it is that simple.
frb9242 is offline   Reply With Quote
Old 11-29-2008, 10:43 AM   #4
Junior Member
Thread Starter
 
Join Date: Nov 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
frb9242 is on a distinguished road
Default

After driving some distance, the temp guage was around 150 degrees. This seemed low to me, but not terribly bad. I replaced the thermostat, which got the temp up to 200 degrees. No real improvement, so any suggestions would be appreciated.
frb9242 is offline   Reply With Quote
Old 12-06-2008, 12:49 AM   #5
Junior Member
Thread Starter
 
Join Date: Nov 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
frb9242 is on a distinguished road
Default

The problem was with the heater core. I drained the anti-freeze and then removed the hoses to the heater core. I used my air compressor and blew about a 100 psi through both hoses. The first attempt blew out mostly anti-freeze; I reversed the order and some small chunks of rusty looking gunk came out. The heater works great now.
frb9242 is offline   Reply With Quote
Old 12-07-2008, 08:26 PM   #6
Senior Member
True Car Nut
 
Join Date: Feb 2002
Posts: 3,993
Thanks: 0
Thanked 0 Times in 0 Posts
JimmyFloyd is on a distinguished road
Default

glad to hear you solved the problem. I was going to say it sounded like a heater core issue.
JimmyFloyd is offline   Reply With Quote
Old 12-09-2008, 09:12 AM   #7
Senior Member
Posts like a Supercharger
 
Join Date: Sep 2005
Posts: 195
Thanks: 0
Thanked 6 Times in 5 Posts
imidazol97 is on a distinguished road
Default

You don't mention how many miles on the car. Had the DexCool been changed?

I wonder if the gunk you blew back out was coagulated DexCool from deterioration due to air in the system or from contamination with regular coolant? Either way I would suggest doing a mild flush on the system with a cleaner to remove more DexCool crud if it'* possible that'* the problem. I remember someone posting somewhere that there was a cleaner used for DexCool flushing. It sounded as if it were specifically meant to remove DexCool residue.
imidazol97 is offline   Reply With Quote
Old 12-09-2008, 01:36 PM   #8
Member
Posts like a V-Tak
 
allenj3's Avatar
 
Join Date: Oct 2008
Posts: 42
Thanks: 0
Thanked 0 Times in 0 Posts
allenj3 is on a distinguished road
Default

Glad to hear that you fixed your problem.
allenj3 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2000 buick park avenue heat actuator Bretton65 Buick 3 01-31-2015 05:04 PM
Runs hot - no heat - then temp drops and heat works?? atp 2000-2005 15 12-16-2009 07:46 AM
help with heat in 2000 SSEi twinrotor 2000-2005 5 01-19-2009 12:49 AM
Heat blowing cold + flashing heat controls after 20 sec chilump 1992-1999 23 02-08-2007 11:48 AM
Anyone here heat with oil heat? I have questions? h1081dan Lounge 3 11-14-2004 05:22 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:52 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.