Search



Go Back   MustangForums.com > Ford Mustang Tech > 2005 - 2014 Mustangs
Sign in using an external account
Register Forgot Password?
Search

2005 - 2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.
Sponsored by Latemodel Restoration


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, 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 free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 09-25-2011, 07:44 PM   #1
dbrizzle
 
Join Date: Sep 2011
Vehicle: 2005 GT
Location: Texas
Posts: 1
Default 05 GT Overheating

Recently my car started overheating and i came to the conclusion that the cooling fan will not come on unless the AC is on. I have changed the relays, fuses, and the thermostat but still the same problem. My car will still overheat even with the AC/Fan on and idling or in stop and go traffic, but does just fine on the highways. Anyone have any other ideas?
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
dbrizzle is offline   Reply With Quote
Old 09-26-2011, 07:38 AM   #2
Coyote 5.0
1st Gear Member
 
Coyote 5.0's Avatar
 
Join Date: Oct 2010
Vehicle: 2011 Ford Mustang GT
Location: Texas
Posts: 74
Default

Have you checked your thermostat, possible it is not opening fully so the flow on the highway is ok but not street driving
__________________
2011 Red CandyGT
6 speed Manual
Brembo Package
Elec/Comfort/Security
packages.
Borla S type Axleback
Coyote 5.0 is offline   Reply With Quote
Old 09-26-2011, 08:28 AM   #3
SCCAGT
3rd Gear Member

 
Join Date: Nov 2006
Location: Kansas City
Posts: 844
Default

I have not had to deal with mine. But, on Crown vics, the module that controls the fan goes bad and causes the same symptoms. The only way the module is sold, is WITH the fan and shroud. This may be your issue.
I also must ask if the coolant level is full. Sounds silly, I'm sure. But the basics have to be covered.
__________________
06 GT, Yellow, Automatic
Procharger, 10psi, 487rwhp
GT500 fuel pumps
3"MagnaFlow Exhaust
BBK Headers
SSB Brake lines
SCCAGT is offline   Reply With Quote
Old 09-26-2011, 09:20 AM   #4
RVAStang05
 
Join Date: Sep 2011
Vehicle: 2005 Mustang GT coupe
Location: VA
Posts: 11
Default

Have you checked the water pump?
RVAStang05 is offline   Reply With Quote
Old 09-26-2011, 09:26 AM   #5
hammeron
6th Gear Member
 
hammeron's Avatar
 
Join Date: May 2006
Vehicle: 2006 GT
Location: Nicely done
Posts: 11,738
Default

i gotta go with thermostat also, based on it still overheating even with
the fan running with AC on.
hammeron is offline   Reply With Quote
Old 09-28-2011, 08:41 AM   #6
luckydawg003
4th Gear Member

 
luckydawg003's Avatar
 
Join Date: Oct 2006
Vehicle: 08 GT, 07 Ford Mustang GT-RIP
Location: Brandon, FL
Posts: 1,214
Default

I had a problem with my 07 GT where the cooling fan stopped working and my car overheated. Dealer said my cooling fan ground was bad and had to replace my entire fan.
__________________


08 Mustang GT
07 BMW 328i
13 Ninja 300 Bike
07 Mustang GT RIP
luckydawg003 is offline   Reply With Quote
Old 10-23-2011, 08:16 PM   #7
Tim2005
 
Join Date: Mar 2011
Vehicle: 2005 mustang gt
Location: Canada
Posts: 12
what is facebook?
Default

how hot does your 2005 run? i had a water temp gauge installed and i think my car runs alittle high too..190 seen it climb to 220 though..ill be installing a mashimoto rad and new fan hopefully it helps...what did you end up doing?
Tim2005 is offline   Reply With Quote
Old 06-15-2014, 01:53 AM   #8
scal0704
 
Join Date: Jun 2014
Vehicle: 2003 Ford Mustang GT
Location: FL
Posts: 2
Default

I landed on this forum after some internet searching because I'm having basically the same issue. My 03 GT has been having overheating issues for quite some time. The cooling fan will not run when the car gets hot, but will run if I turn on the A/C.
Yet, even if I run the A/C, the car overheats after about 10 minutes of city driving. When I turn the A/C on and turn the temperature dial to hot, that prevents overheating. But since I live in Florida, I need the car to run efficiently with the A/C blowing cold air. I've never had issues with the A/C producing cold air.
The temperature gauge works until it reaches halfway then does not continue to move past that point, even though I know the engine is much hotter.

I went to a local Ford dealership for a diagnostic test, where I was told I needed to replace the cooling fan assembly and that my battery was weak (perhaps this overall cooling issue is causing wear and tear on the battery?).

The cooling fan and thermostat were both replaced about 2 years ago when the car was overheating. The issue back then was a plug in that is located by the fan towards the passenger side (my dad is my mechanic, so I apologize for not knowing exactly what this plug in part is...).

I went to purchase a new cooling fan assembly from AutoZone, where the employee there talked me out of that and into buying a new temperature control sensor based on what I told him. I already replaced the CCRM thinking that was the issue before I brought it in for a diagnostic test. I disagree with the diagnostic test because in my understanding, the cooling fan itself works however the fan isn't receiving the signal to activate when the engine is hot. So to me that would mean it would be some sort of sensor or relay that is bad, but I very well could be wrong. But right or wrong, it just want it fixed!!

Any advice would be GREATLY appreciated!
scal0704 is offline   Reply With Quote
Old 06-15-2014, 02:05 AM   #9
moosestang
6th Gear Member
 
Join Date: Sep 2006
Vehicle: 2006 mustang gt
Location: Gainesville, FL
Posts: 11,262
Default

Quote:
Originally Posted by Tim2005 View Post
how hot does your 2005 run? i had a water temp gauge installed and i think my car runs alittle high too..190 seen it climb to 220 though..ill be installing a mashimoto rad and new fan hopefully it helps...what did you end up doing?
220 is normal with stock fan settings.

Check the underside of you main fuse box under the hood. At least two people had the bottom side of the cooling fan relay burn up and cause the high speed fan to not come on.

Just because the fan is running, that doesn't mean it's running on the high speed setting and low speed will not cool your car sitting in traffic.
__________________
Boost or Buell, decisions, decisions.

whipple HO SC,FRPP k springs, Pypes mid mufflers, hurst, frpp TB, 4.10's, spohn lca's, adj. UCA, relo brackets, 1 piece DS, spec stg 3+ clutch. 12.52@117.6mph so far with a 2.01 60 ft time

Pumpkin jacking addict
moosestang is offline   Reply With Quote
Old 06-15-2014, 02:05 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
05, 05mustangradiatorfanswontcomeonunlessacison, 2005, ac, ford, gt, headers, heating, mudtang, mustang, overheat, overheating, overheats, procharger, s197, sn197, tuening

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 01:01 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup