2004 Malibu LS - Coolant Temp Sensor replacement - Chevy Malibu Forum: Chevrolet Malibu Forums
Auto Insurance

» Featured Product
Wheel & Tire Center


ChevyMalibuForum.com is the premier Chevrolet Malibu Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 12-17-2010, 11:04 AM   #1
acevans79
CMF Rookie Member
 
Join Date: May 2009
Posts: 15
Gallery: 0
Post 2004 Malibu LS - Coolant Temp Sensor replacement

Hello,

I have a 2004 Malibu LS 3.5l V6. My check engine light is on and I notice that since it got cold out the car has been starting rough for the past few days.

I hooked up a engine light computer and the code said that the coolant temperature is lower than the thermostat gauge says it is.

I have bought a coolant temperature sensor and just need instructions as how to replace it. I am handy but by no means a mechanic so if you can include a diagram that would be great!


Thanks
acevans79 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-17-2010, 04:13 PM   #2
Starship
CMF Veteran Member
 
Join Date: Feb 2010
Posts: 1,417
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

The ECTS is item 3 in the drawing http://cid-54465800aad91b49.office.l...20of%20LX9.GIF. You're supposed to drain the coolant to the level below the sensor, apply the sealer (P/N 13246004) to the sensor threads, and then tighten it to 15 ft-lb. With that said, if it were registering really low temperature, the problem is probably a broken circuit (most often inside the electrical connector). There should be a 5V on one of the terminals with the key on and ground on the other terminal.

Last edited by Starship; 12-17-2010 at 04:15 PM. Reason: Typo
Starship is offline   Reply With Quote Quick reply to this message
Old 12-17-2010, 06:18 PM   #3
chevyguy8893
Super Moderator
2009 Malibu LTZ
Silver Ice
 
chevyguy8893's Avatar
 
Join Date: May 2010
Location: Hobart, Indiana
Posts: 1,678
Gallery: 0
Garage
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

Quote:
Originally Posted by acevans79 View Post
Hello,

I have a 2004 Malibu LS 3.5l V6. My check engine light is on and I notice that since it got cold out the car has been starting rough for the past few days.

I hooked up a engine light computer and the code said that the coolant temperature is lower than the thermostat gauge says it is.

I have bought a coolant temperature sensor and just need instructions as how to replace it. I am handy but by no means a mechanic so if you can include a diagram that would be great!


Thanks
Did the code happen to be P0128, coolant temperature below thermostat regulating temperature? If not then ignore the rest. If so, it is more than likely going to be the thermostat. If you are going to be replacing the temp sensor you might as well replace the thermostat to cover that base instead of loosing more coolant in the future if the code comes back after replacing the sensor.
__________________
09' Malibu LTZ with brick leather interior
4 cyl w/6 speed auto
Silver Ice Metallic paint

Mods: PTM bow ties, grill, washer nozzles, and fog light trim
-20% tint
-MTX600XD, 2 12" Infinity Kappa Perfect 12.1, 4 gauge stinger wire, Pioneer 7800MP CD player
-5000K HID headlights and 3000K fog lights
-White LED's in the switches and handles
-Blacklight overhead console LED's
-Painted and polished factory aluminum wheels



Last edited by chevyguy8893; 12-17-2010 at 06:20 PM.
chevyguy8893 is offline   Reply With Quote Quick reply to this message
Old 12-17-2010, 07:12 PM   #4
acevans79
CMF Rookie Member
 
Join Date: May 2009
Posts: 15
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

Thanks for the information folks. I replaced the coolant temperature sensor and everything seems to be back to normal. In fact, I am actually getting better gas mileage now according to the info on the radio.

Thanks Again!
acevans79 is offline   Reply With Quote Quick reply to this message
Old 12-17-2010, 08:20 PM   #5
Starship
CMF Veteran Member
 
Join Date: Feb 2010
Posts: 1,417
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

You're quite welcome and thanks for the update.
Starship is offline   Reply With Quote Quick reply to this message
Old 03-16-2011, 03:54 PM   #6
Anglerking
CMF Rookie Member
2004 Malibu 2LT
Silver
 
Join Date: May 2010
Posts: 7
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

I too have the same problem. Tried to go to the web address given to see the diagram but get the message that the particular address has either been moved or deleted.
Would appreciate getting a link to an engine diagram showing both the ect sensor and thermostat.

Thanks, guys.
Anglerking is offline   Reply With Quote Quick reply to this message
Old 03-17-2011, 10:30 AM   #7
acevans79
CMF Rookie Member
 
Join Date: May 2009
Posts: 15
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

The coolant sensor is located on the drivers side of the car on the rear of the engine block. I will take a picture and post it shortly. Very easy to replace just make sure that you drain the coolant first before you attempt to remove and replace it.
acevans79 is offline   Reply With Quote Quick reply to this message
Old 03-17-2011, 10:56 AM   #8
acevans79
CMF Rookie Member
 
Join Date: May 2009
Posts: 15
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

http://i1119.photobucket.com/albums/...OOLANTTEMP.jpg

http://i1119.photobucket.com/albums/...OLANTTEMP2.jpg
acevans79 is offline   Reply With Quote Quick reply to this message
Old 03-21-2011, 08:17 AM   #9
Anglerking
CMF Rookie Member
2004 Malibu 2LT
Silver
 
Join Date: May 2010
Posts: 7
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

Thanks a ton for the photos. Will post again after completing the change.
Anglerking is offline   Reply With Quote Quick reply to this message
Old 03-21-2011, 01:01 PM   #10
Anglerking
CMF Rookie Member
2004 Malibu 2LT
Silver
 
Join Date: May 2010
Posts: 7
Gallery: 0
Default Re: 2004 Malibu LS - Coolant Temp Sensor replacement

Thanks a ton for the pictures. Would also appreciate if you would post a picture of the related thermostat . I understand it would be better to change the thermostat too at the same time. Is this correct?

Thanks again.
Anglerking 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 Malibu Forum: Chevrolet Malibu 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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2004 Malibu - AC Anglerking Problems/Service Issues/Troubleshooting (Generations 5 & 6) 11 05-25-2014 09:13 PM
2004 Malibu starting and temp gauge issues csv86 Problems/Service Issues/Troubleshooting (Generations 5 & 6) 3 12-26-2011 11:22 AM
2001 knock sensor location and replacement ezko84 Do It Yourself Maintenance (Generations 5 & 6) 3 12-07-2010 09:35 AM
98 malibu 3.1 - temp guage and thermostat questions ibbobud Problems/Service Issues/Troubleshooting (Generations 5 & 6) 1 02-28-2010 08:37 AM
1998 Chevy Malibu Coolant Leak and Engine Ticking noise maliblue1998 Problems/Service Issues/Troubleshooting (Generations 5 & 6) 3 02-28-2010 06:45 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 06:15 AM.



Powered by vBulletin®. Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
The Chevy Malibu Logo, Chevy Malibu Typeface and Chevy Logo are Trademark General Motors. We are in no way affiliated with General Motors, we are simply an enthusiasts' site.