G4GC engine not getting hot enough - Hyundai Forums : Hyundai Forum
LinkBack Thread Tools
post #1 of 3 (permalink) Old 05-15-2019, 06:12 PM Thread Starter
Junior Member
Join Date: Nov 2016
Location: UK
Hyundai Trajet 2.0 GSI G4GC 2006
Posts: 17
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
skydancer is an unknown quantity at this point
(Thread Starter)
G4GC engine not getting hot enough

Already had the t'stat replaced twice. When the car is stationary in the P gear, the coolant temperature gauge will slowly reach 40-45% of the scale and stays like that. Radiator fans do not kick in. As soon as the car is on the move with a reasonable speed, the gauge drops to the very bottom of the scale. See the photo, this is after 20 minutes of driving on the motorway. The cabin blower gives then at most warm air (not exceeding 30 deg C), which proves that the coolant's temperature is too low (so it is not a false reading of the temperature sensor, I think).

I am really out of options, any ideas what might be wrong?
Attached Images
File Type: jpg 20190511_220700.jpg (66.2 KB, 5 views)

Last edited by skydancer; 05-15-2019 at 06:23 PM.
skydancer is offline  
Sponsored Links
post #2 of 3 (permalink) Old 05-17-2019, 12:21 PM
Senior Member
Join Date: Nov 2010
Hyundai Trajet 2.7, Kia Optima 2.5, some BMWs
Posts: 853
Mentioned: 0 Post(s)
Quoted: 95 Post(s)
e3tom is an unknown quantity at this point
can't be anything but thermostat - given it's not a gauge problem.

Take it out, put in cold water with a suitable thermometer next to it and heat it up. See at what temperature it opens.
e3tom is offline  
post #3 of 3 (permalink) Old Today, 06:26 AM
Junior Member
Mazen57's Avatar
Join Date: May 2018
Posts: 16
Mentioned: 0 Post(s)
Quoted: 8 Post(s)
Mazen57 is an unknown quantity at this point
For this particular situation,,and to test your thermostat,set the car on P , run the engine, keep feeling the upper coolant hose ,ie radiator supply, and the lower hose , ie the return hose, while the engine is getting hot ,the temperature of upper hose ,must be much hoter than the lower ,ie if both are getting hot at the same time, while temperature is raising ,then definitely the thermostat,is not working , because coolant pump is circulating the coolant, without thermostat control. May be it's not the right type.
Good luck with that.
Mazen57 is online now  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Hyundai Forums : Hyundai Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

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

For the best viewing experience please update your browser to Google Chrome