Running hot, for no reason, why? - Pontiac G6 Forum
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 02-19-2012, 12:51 AM Thread Starter
Junior Member
Join Date: Feb 2012
Posts: 19
Running hot, for no reason, why?

So up until last weekend i have never heard the fans in the g6 run. Then while we were coming back from reno, to the sf bay area, the car started to run hot. I stopped at a gas station about 15 miles from tne hotel to get gas and i haer the fans running on high, i mean it sounded intense. The car was over 240F. It statyed pretty high all the way back and it was only in the 40s outside. We stopped at anoher gas station a bit higher up and i cracked open the over flow and let the coolant boil just a tad in the over flow. I didnt let any spill out and i didnt burn myself lol. just as a note, the car made it to reno with out gOing over 225F.

After that it stayed around 225. However it is still running just over 225 and when we park somewhere, either a short drive or a long one, the fans are running hard long after the car is off.nthe coolant level is normal.

The car is a 3.5 with 65k on the clock. Do i need a thermostat? Coolant flush? Or some other random thing?
2001goldGTP is offline  
Sponsored Links
post #2 of 6 (permalink) Old 02-19-2012, 07:43 AM
G-Sixer's Avatar
Join Date: Feb 2012
Posts: 43
Someone else may have a better educated guess than I would but did you check for codes at all? The CEL does not have to be on for there to be stored codes. You can do this at your local Autozone or Advance Auto or you can buy your own scanner which have come down in price considerably.

Sent from my Autoguide iPhone app
G-Sixer is offline  
post #3 of 6 (permalink) Old 02-19-2012, 10:51 AM
Junior Member
Join Date: Feb 2012
Posts: 7
If it randomly started doing this I would make sure you did not run over a bag or something that is restricting the air flow to the radiator (sometimes they can make their way in places you would never think of). Next I would check the thermostat because you know your fans are working. If the thermostat is working properly then the only thing left would be your water pump. I don't know much about the G6 water pumps when they are worn out will leak a little out a small hole on the bottom of where the gear is internally. Hope this helps.

2000 Trans Am WS6: Sebring Silver Metallic LS6, TEA 5.3 stg. 2 heads, VRx5 cam, Monster stg 3 clutch, 3.73 gears, yada yada.....too much more to list.
Daily Driver- 2003 Silverado Z71, 3 inch body lift, 35s, Hypertech
Wife's: 2010 G6 Silver Metallic 3.5 V6 with ebony int.
platinum ws6 is offline  
Sponsored Links
post #4 of 6 (permalink) Old 02-19-2012, 01:07 PM
Join Date: Jul 2011
Posts: 2,388
Since you aren't seeing any coolant loss or hearing air trapped in the system I would replace the stat. A dragging brake can also cause engine overheating.

greenman is offline  
post #5 of 6 (permalink) Old 02-20-2012, 08:53 PM Thread Starter
Junior Member
Join Date: Feb 2012
Posts: 19
The car doesnt feel like its draging a brake at all but i will look into that. I would expect a couple hundred mile drive would over heat a dragging brake, and i did not see any debris under the car or against the radiator. So im guessing t stat time. Thanks guys.
2001goldGTP is offline  
post #6 of 6 (permalink) Old 02-21-2012, 01:00 AM
Join Date: Jul 2011
Posts: 2,388
If you PM me with an email address, I'll send the stat how-to from the GMSI if you need it.

greenman is offline  
Sponsored Links

  Pontiac G6 Forum > Technical Discussion & Modifications > Problems and Solutions

Quick Reply

Register Now

In order to be able to post messages on the Pontiac G6 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: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
locked up brakes for no reason railmut Problems and Solutions 2 11-06-2011 02:29 PM
daytime running lights ryangski Problems and Solutions 12 10-12-2011 05:56 PM
3.5 Running Lean With CRABS And GT-R coastiejoe Problems and Solutions 4 09-18-2011 10:59 PM
What A/V setups are you running? RedRocket Car Audio, Video and Security 4 04-29-2011 06:35 AM
Running new speaker wire Dragon12579 Car Audio, Video and Security 9 01-02-2010 04:44 PM

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