no heat at idle/stop - Chevy Impala Forums

It appears you have not yet registered with our community. To register please click here...

Chevy Impala Forums

Go Back   Chevy Impala Forums > Performance and Technical > Chevy Impala 8th Gen Discussion

Chevy Impala 8th Gen Discussion W-Body 2006-2013. Discuss all Chevy Impala 8th Generation Performance and Technical Discussion here.

Reply
 
LinkBack Thread Tools Display Modes
Old 12-19-2011, 04:37 PM   #1 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
no heat at idle/stop

I just purchased a 2008 impala ltz

The heater works great when driving, but doesn't blow hot air at stop/idle.

any ideas?

benualson is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-19-2011, 04:58 PM   #2 (permalink)
Impalaforums.com

 
Stephen's Avatar
 
Join Date: Sep 2011
Location: Kentucky
Posts: 3,527
Thanks: 7
Thanked 44 Times in 23 Posts
so it still blows air its just not hot anymore? will increasing the rpms while at idle make the heat come back?

__________________


Past IOTM Winners http://www.impalaforums.com/iotm-win...m-winners.html
Stephen is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 05:11 PM   #3 (permalink)
Impalaforums.com

 
Stephen's Avatar
 
Join Date: Sep 2011
Location: Kentucky
Posts: 3,527
Thanks: 7
Thanked 44 Times in 23 Posts
First check your coolant levels in your radiator and reservoir tank.


Poor Heat at Idle
Models: 2006 - 2009 Chevrolet Impala

Poor heat at idle, however, if the engine RPMs are raised the concern no longer occurs.

1. With the engine cooled off, remove the coolant pressure cap.
2. Remove upper heater core hose from the metal pipe on the engine.
3. Add coolant to the metal pipe, until full.
4. Raise the rubber portion of the heater core hose as high as it will go with it still attached at the heater core. Using a funnel, add coolant until the hose is full.
5. Reconnect the heater core hose.
6. Start engine, have assistant raise the RPMs to about 1500 to 1700 RPMs, top coolant off at engine, then before lowering engine RPMs, install the coolant pressure cap.
7. Fill coolant reservoir as necessary, then check the heat at idle.

Note: If there is still a lack of heat at idle, perform the cooling system draining and refilling procedure

__________________


Past IOTM Winners http://www.impalaforums.com/iotm-win...m-winners.html
Stephen is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 06:29 PM   #4 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
yeah, increasing the rpms brings heat right back...

benualson is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 06:38 PM   #5 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
would running the car for a couple minutes with the reservoir cap off acheive the same results?

benualson is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 06:46 PM   #6 (permalink)
Impalaforums.com

 
Stephen's Avatar
 
Join Date: Sep 2011
Location: Kentucky
Posts: 3,527
Thanks: 7
Thanked 44 Times in 23 Posts
I dont see how just taking the reservoir cap off will do anything at all...
Check all of the coolant levels when the engine is cold first

__________________


Past IOTM Winners http://www.impalaforums.com/iotm-win...m-winners.html
Stephen is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 08:19 PM   #7 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
where is the upper heater core hose? I am a fairly capable DIYer, but new to this car...

do i re-attatch the hose to the metal pipe after step 3?

benualson is offline   Reply With Quote Quick reply to this message
Old 12-19-2011, 08:47 PM   #8 (permalink)
Impalaforums.com

 
Stephen's Avatar
 
Join Date: Sep 2011
Location: Kentucky
Posts: 3,527
Thanks: 7
Thanked 44 Times in 23 Posts


The upper heater hose should look something like one of these two..It will come out of your firewall and connect to a pipe...

follow the steps in order..step 5 is when you reconnect the hose..

__________________


Past IOTM Winners http://www.impalaforums.com/iotm-win...m-winners.html
Stephen is offline   Reply With Quote Quick reply to this message
Old 12-20-2011, 09:30 AM   #9 (permalink)
Member
 
Flyboyray1's Avatar
 
Join Date: Jan 2011
Location: Somerset, Ky
Posts: 49
Thanks: 0
Thanked 1 Time in 1 Post
See my message about a week or so ago. I had the same problem after replacing the anti-freeze. It's an air bubble in the heater core tubes. I took cap off when engine was cold and kept squeezing upper radiator hose until bubbles stopped coming out the filler neck. I topped it off with almost a quart and it works just fine now. Upper heater core hose is the highest point in the system and gets air bubbles.

Flyboyray1 is offline   Reply With Quote Quick reply to this message
Old 12-20-2011, 10:45 AM   #10 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
^ thanks

i'll let you know how it goes...how long does it take for this car to cool down before taking off the cap?

benualson is offline   Reply With Quote Quick reply to this message
Old 12-20-2011, 10:48 AM   #11 (permalink)
Divine Autosound
 
C.E.Divine's Avatar
 
Join Date: Aug 2011
Location: Fayetteville, AR
Posts: 2,168
Thanks: 0
Thanked 11 Times in 11 Posts
It would be safe to give it a couple hours at least. It would be best to to it on a day you didn't have to go to work, and do it first thing in the morning before the car is driven that day.

C.E.Divine is offline   Reply With Quote Quick reply to this message
Old 12-20-2011, 06:28 PM   #12 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
So I did as Flyboy ray suggested & it was suggested on other threads. I took the radiator cap off, filled coolant up to the top & squeezed the upper radiator hose. This caused the air bubbles to release & bubble up. I repeated this fill/squeeze process about 4 or 5 times...I must have used 1/2 gallon to do this process and add to reservoir...

When done, I fired the car up & warm air was blowing through when the engine warmed up. I took it for a spin to get it to hot operating temp & it was blowing HOT air through at full speed, stop, park, whatever!!!! WOOOOHOOOOO!

I just hope this is a permanent fix & that there isn't a leak.

I just bought the car on sunday from a chevy dealer. I am surprised they didn't find this a problem during their pre-sell inspection...

benualson is offline   Reply With Quote Quick reply to this message
Old 12-21-2011, 10:39 AM   #13 (permalink)
8th Gen Antagonist
 
kingnutin's Avatar
 
Join Date: Mar 2009
Location: Vancouver , WA
Posts: 13,656
Thanks: 516
Thanked 1,192 Times in 788 Posts
They obviously didn't check it that thoroughly. I'd take it back and have them pressure test it to be sure.

__________________
1978 Caprice Classic Landau
350 2-bolt, stock 4bbl
Stock rebuilt TH350
Edelbrock performer cam + intake
Dual 2 1/2" Flowmaster exhuast (waiting to be installed)
Edelbrock IAS Classic shocks
95 9C1 3.08 posi
4 wheel disc brakes!
16x8 American Racing Baja's with 225/60/16 Pirelli P4's

kingnutin is offline   Reply With Quote Quick reply to this message
Old 12-22-2011, 04:05 PM   #14 (permalink)
Member
 
benualson's Avatar
 
Join Date: Dec 2011
Posts: 31
Thanks: 0
Thanked 0 Times in 0 Posts
I took it back, they replaced the coolant crossover pipe, couple gaskets, etc. Free of charge!!!

__________________
2008 Gray Impala LTZ
Love this thing.
benualson is offline   Reply With Quote Quick reply to this message
Old 12-25-2011, 10:00 AM   #15 (permalink)
Member
 
Flyboyray1's Avatar
 
Join Date: Jan 2011
Location: Somerset, Ky
Posts: 49
Thanks: 0
Thanked 1 Time in 1 Post
Glad you got it fixed. I bought my car last December. The windshield was full of ice, so I started the car and left the blower on low and heater on defrost. I came back about 15 minutes later and temp gague was up to 1/2 (normal) but it was blowing cold air. Step on gas just a little and it's blowing hot air. This forum helped me to figure out what was wrong. The Chevy dealer had no clue.

Flyboyray1 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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


LinkBacks (?)
LinkBack to this Thread: http://www.impalaforums.com/chevy-impala-8th-gen-discussion/306181-no-heat-at-idle-stop.html
Posted By For Type Date
What is 2007 IMPALA NO HEAT WHEN IDLE? This thread Refback 04-27-2013 11:30 AM

Similar Threads
Thread Thread Starter Forum Replies Last Post
No heat at idle 2006 3.9 Flyboyray1 Chevy Impala 8th Gen Discussion 1 12-10-2011 10:49 AM
Brakes won't stop gwaan83 Automotive Discussion 23 09-07-2011 06:45 PM
Pit Stop Mode? 07LT Chevy Impala 8th Gen Discussion 6 02-07-2011 07:46 PM
Looks Like This Is The First Stop HarrysHog2 Introductions & Welcome Forum 15 03-12-2010 09:21 AM
Stop the insanity! breetai Media Bucket 11 05-03-2008 06:21 PM




Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0 ©2011, Crawlability, Inc.
This site is not affiliated nor endorsed by General Motors Corp. Chevy Impala and related trademarks are the property of General Motors Corp.