Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Chevrolet > TrailBlazer | Trailblazer EXT
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools Search this Thread
Old 04-04-2012, 11:22 AM   #1
Timtickle
AF Newbie
 
Join Date: Jan 2005
Location: Villa Rica, Georgia
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
2005 Trailblazer "low collant temp" Light

I have been battling this for some time. The check engine light comes after a period of time from reset. I have changed the thermostate, temp sensor, coolant flush and added per MFG.

I am down to clutch fan. ANY F'n ideas people? The temp guage sits right at 210.

From what I can tell is the check engine light comes on because the engine reaches operating temp to SLOWLY. Im guessing because the clutch fan is spinning to early in the game. Please help.
Timtickle is offline   Reply With Quote
Old 04-04-2012, 12:21 PM   #2
maxwedge
A990 racer
 
Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,516
Thanks: 13
Thanked 315 Times in 309 Posts
Re: 2005 Trailblazer "low collant temp" Light

First of all what is the code?
__________________
maxwedge is offline   Reply With Quote
Old 04-20-2012, 11:47 AM   #3
Timtickle
AF Newbie
Thread starter
 
Join Date: Jan 2005
Location: Villa Rica, Georgia
Posts: 44
Thanks: 0
Thanked 0 Times in 0 Posts
Re: 2005 Trailblazer "low collant temp" Light

It is "low collant temp" P0128

Definition

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.
Timtickle is offline   Reply With Quote
Old 04-20-2012, 01:35 PM   #4
gmtech1
AF Enthusiast
 
gmtech1's Avatar
 
Join Date: Aug 2011
Location: Beachside
Posts: 2,000
Thanks: 4
Thanked 301 Times in 299 Posts
Re: 2005 Trailblazer "low collant temp" Light

Usually a t-stat takes care of the P0128. Are you sure you used the correct temp stat when you replaced it? If so, you may have a fan clutch issue, it would be a little unsual though.
gmtech1 is offline   Reply With Quote
Old 04-21-2012, 01:13 PM   #5
Schurkey
AF Enthusiast
 
Join Date: Jul 2005
Location: the Seasonally Frozen Wastelands
Posts: 773
Thanks: 6
Thanked 52 Times in 52 Posts
Re: 2005 Trailblazer "low collant temp" Light

I thought there was a considerable history with defective fan clutches that would lock up and not release.

The usual complaint is lots of fan noise.

Hayden--and probably others--make an upgraded fan clutch for this application. The Hayden number is 3201.

http://www.amazon.com/Hayden-Automot...5028368&sr=8-1
__________________
Declared "the flat out DUMBEST poster on this board" and holder of the the dead-former-moderator-sanctioned rating of "dumbass".
Schurkey is offline   Reply With Quote
Old 04-21-2012, 08:47 PM   #6
gmtech1
AF Enthusiast
 
gmtech1's Avatar
 
Join Date: Aug 2011
Location: Beachside
Posts: 2,000
Thanks: 4
Thanked 301 Times in 299 Posts
Re: 2005 Trailblazer "low collant temp" Light

Yes, there is a problem with the fan clutches staying engaged,like you said, you would hear it if it was. I was just saying the the fan clutch usually does not cause p0128. If you suspect a fan clutch, by all means replace it.
gmtech1 is offline   Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
"Low Coolant Level" Light gtpguy Grand Prix 8 07-12-2009 07:19 PM
"low wiper fluid light always ON!" 1989xjlimited Cherokee 5 11-27-2005 11:07 AM
96 Buick Regal Custom "low trac" warning light whbonney Regal 7 07-22-2005 01:19 PM
95 Old Achieve "Low Coolant level" light Haole101863 General Discussion 1 01-22-2005 06:12 PM
2005 trailblazer boothe7373 TrailBlazer | Trailblazer EXT 0 09-12-2004 11:08 AM

Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > Chevrolet > TrailBlazer | Trailblazer EXT

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



All times are GMT -5. The time now is 04:52 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts