Chevy HHR Network Forums
Search

Welcome to the Chevy HHR Network forums. The Chevy HHR Network is the leading resource for Chevy HHR owners.
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our FREE community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact us.

Register Forgot Password?
-
Go Back   Chevy HHR Network > Engine Performance > 2.4L Performance Tech > Cooling fan start UP temp?
-

2.4L Performance Tech 16 valve 172 hp EcoTec with 162 lb-ft of torque

Reply
 
 
 
submit to reddit
 
Thread Tools Display Modes
Old 05-24-2009, 02:39 PM   #1
antonalex
 
Join Date: 03-15-2009
Location: Temperance
Member #: 14301
Posts: 7
Check out my gallery 
Cooling fan start UP temp?

Just want to find out at what temperature PCM sends a signal for the cooling fan to come ON.
2006 HHR 2.4L big boy:)
Conditions:
I had the car idling with AC ON for about 20 min after driving it.
Temp rose from 198 to 241 F and cooling fan did not come ON.
Got tired of waiting for it to come ON and went on driving , the Temp dropped
back to High 190 F. May be its normal for the temp get that High with out the fan kicking ON but I just want to make sure.
With my 94 Trans Am both fans come ON as soon as I turn AC ON. Regardless of the temperature of the coolant.
Thanks.
antonalex is offline   Reply With Quote
Old 05-24-2009, 05:25 PM   #2
c2vette
Senior Member
 
Join Date: 11-27-2007
Location: Austin, Texas
Member #: 4904
Posts: 1,126
Images: 143
Check out my gallery 
The service manual does not reference a specific temperature that the fan activates, but I know mine comes on at lower temperatures than you indicate. The fan speed actually is variable (not just on or off). Sounds like either your relay or your fan is bad. There is a 30A fuse for the fan and relay in the fuse box, so obviously that is the first thing to check.
c2vette is offline   Reply With Quote
Old 05-24-2009, 06:19 PM   #3
Snoopy
Platinum Member
 
Snoopy's Avatar
 
Join Date: 05-09-2006
Location: "Upland" Mesa, Arizona
Member #: 950
Posts: 6,340
Check out my gallery 
I believe the fans turn on at around 210 F. But it depends on experiences....most everyone has had different results.

You may wish to use the SEARCH function because this topic has been discussed many times, previously. Here is one in particular to review. Go through ALL the posts. ChevyMgr provided a reasonable Service Manual explanation.

http://chevyhhr.net/forums/showthrea...ng+temp&page=2
Snoopy is offline   Reply With Quote
Old 05-24-2009, 07:38 PM   #4
Brwbier
Member
 
Join Date: 06-03-2008
Location: Sheboygan, WI
Member #: 7028
Posts: 71
Images: 2
Check out my gallery 
Most cars turn the fan on at about 112c and off at 108c.
__________________
Brwbier is offline   Reply With Quote
Old 05-24-2009, 07:53 PM   #5
antonalex
 
Join Date: 03-15-2009
Location: Temperance
Member #: 14301
Posts: 7
Check out my gallery 
Quote:
Originally Posted by Snoopy View Post
I believe the fans turn on at around 210 F. But it depends on experiences....most everyone has had different results.

You may wish to use the SEARCH function because this topic has been discussed many times, previously. Here is one in particular to review. Go through ALL the posts. ChevyMgr provided a reasonable Service Manual explanation.

http://chevyhhr.net/forums/showthrea...ng+temp&page=2
Did used the search, Nothing specific about the fan start UP temp.
I know that my other cars with elec. fans start way before 241 f.
That is why I posted a thread. I wanted to know if I had a problem or not.
Looks like I have a problem.
antonalex is offline   Reply With Quote
Old 05-24-2009, 08:25 PM   #6
c2vette
Senior Member
 
Join Date: 11-27-2007
Location: Austin, Texas
Member #: 4904
Posts: 1,126
Images: 143
Check out my gallery 
Quote:
Originally Posted by Snoopy View Post
I believe the fans turn on at around 210 F. But it depends on experiences....most everyone has had different results.

You may wish to use the SEARCH function because this topic has been discussed many times, previously. Here is one in particular to review. Go through ALL the posts. ChevyMgr provided a reasonable Service Manual explanation.

http://chevyhhr.net/forums/showthrea...ng+temp&page=2
Post #60 with the actual tables (from HPTuners read?) is very informative as well as ChevyMGR posts. Although now I wonder why my fan will run with key off and temp at 210F when it is supposed to be at around 250F for that condition (key off)?
c2vette is offline   Reply With Quote
Old 05-25-2009, 12:36 AM   #7
Snoopy
Platinum Member
 
Snoopy's Avatar
 
Join Date: 05-09-2006
Location: "Upland" Mesa, Arizona
Member #: 950
Posts: 6,340
Check out my gallery 
Quote:
Originally Posted by Brwbier View Post
Most cars turn the fan on at about 112c and off at 108c.
When you say most cars....are you saying most HHR's or most all vehicles? I don't believe that's a valid statement for the HHR's. And I think 112 c is a bit high if my rusty conversion math is correct. I get something like 234 F. which does not compute to any of my 4 GM vehicles.
Snoopy is offline   Reply With Quote
Old 05-25-2009, 09:20 PM   #8
antonalex
 
Join Date: 03-15-2009
Location: Temperance
Member #: 14301
Posts: 7
Check out my gallery 
Quote:
Originally Posted by c2vette View Post
Post #60 with the actual tables (from HPTuners read?) is very informative as well as ChevyMGR posts. Although now I wonder why my fan will run with key off and temp at 210F when it is supposed to be at around 250F for that condition (key off)?
Thanks for pointing the thread number. Those type of tables is exactly what I wanted to see.

Also, I checked my fuse, relay is clicking and I have over 13 volts at the fan harness, Looks like I need a new fan.
Car only has 38400 mi, that sucks.
Anyone know where ( Any one bought the one that on Ebay ) ?
antonalex is offline   Reply With Quote
Old 09-23-2009, 10:47 PM   #9
2003_2LT
New Member
 
Join Date: 09-23-2009
Location: Chicago, IL
Member #: 17054
Posts: 16
Images: 1
Check out my gallery 
I believe the fan should activate when your AC is activated.
2003_2LT is offline   Reply With Quote
Old 09-24-2009, 09:10 AM   #10
RaineMan
Senior Member
 
Join Date: 09-12-2009
Location: Charlotte NC
Member #: 16905
Posts: 152
Check out my gallery 
Coming from a Cobalt SS to a 2.4HHR I can tell you... this thing runs HOT. If I'm just sitting idling the coolant temp will get above 220 pretty easily.

Honestly I don't see it as a big problem... the car seems to run just fine either way.

If you are that concerned, you can command the fans on at a lower temp through HPTuners.
RaineMan is offline   Reply With Quote
Old 09-24-2009, 09:10 AM
 
 
 
submit to reddit
Reply
   
 

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

Forum Jump


All times are GMT -5. The time now is 05:10 PM.
vBulletin copyright ©2000 - 2014, Jelsoft Enterprises Ltd. Vb Style © vb-skins.com

Advertising - Privacy Statement - Terms of Service - Cookies - Jobs

Copyright © 2005 - 2013 Internet Brands, Inc. All rights reserved.
Chevy HHR Network Forums