Search



Go Back   MustangForums.com > Ford Mustang Tech > 2005 - 2014 Mustangs > GT S197 General Discussion > 4.6L V8 Technical Discussions
Sign in using an external account
Register Forgot Password?
Search

4.6L V8 Technical Discussions Any questions about engine, transmission, or gearing can be asked here!

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 07-12-2013, 08:50 PM   #1
Horylev1145

 
Join Date: Mar 2012
Vehicle: 05-Ford-Mustang
Location: Michigan
Posts: 19
Default Coolant overboiling from overflow tank after flush

Car was running coolant temps of about 210, 220 at the highest the other day. Decided to do a flush hoping to bring it down (drained everything, took out thermostat and reassembled, flushed from top of radiator everything coming out the upper radiator hose, put thermostat back in, added coolant and "burped" the system). Car ran good for the following two days never going over 202. Today i put in a short throw shifter and took it for a drive after maybe 10 mins tops. Car heated up pretty quickly getting to 215. Noticed coolant boiling out of the overflow tank just after i got back. Let it sit for about 30 mins, turned it on and again starts heating up quickly at idle and also noted the fan was not running.

Any help is appreciated. Also what is a good or normal temp to be running and what would be considered too hot?

Cars a 2005 gt 65000 miles basically stock. No leaks from any hoses, oil looks good no water/coolant. Car called for 13.6q dry fill after the flush but only needed 8q to fill. I used Zerez g-05 coolant 50/50.
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
Horylev1145 is offline   Reply With Quote
Old 07-12-2013, 09:33 PM   #2
JCON
5th Gear Member

 
JCON's Avatar
 
Join Date: Jul 2009
Vehicle: 2005 Mustang GT Convertible
Location: Delaware
Posts: 2,177
Default

Few things possible here.

First, my car never goes over 194* and it gets in to the 90's here and my car is black. So 220* is hot!

Second, are you sure your thermostat is functioning properly?

Third, what ratio of anti freeze to water did you use? (Do you park your car in the winter?)

Fourth, with the car running and at operating temp, could you feel the fluid moving from the radiator to the block?
__________________
Like Mid-Atlantic Mustangs on Facebook
Mid-Atlantic Mustang's YouTube Channel

270rwhp 292rwtq - 4/21/12 - Stock 87 octane + 4.10's
283rwhp 296rwtq - 4/20/13 - Exhaust 87 octane + 4.10's
330rwhp 336rwtq - 4/19/14 - Intake, P&P TB, CMDP's, UDP's, LT's, O/R ProChamber, 4.10's + 93 tune
JCON is offline   Reply With Quote
Old 07-12-2013, 10:44 PM   #3
Horylev1145

 
Join Date: Mar 2012
Vehicle: 05-Ford-Mustang
Location: Michigan
Posts: 19
Default

Good to know i assumed over 200 was not to good as my other car was 190's.
I have no reason to assume that it isnt working properly. Not too sure my temp gauge in the dash is working tho. Any way to test that or should i start with replacing that?
I used 50/50 ratio, bottled water if that makes any difference. But i was confused as to why it only needed 8q when max fill was 13.6q.
And when i first filled it and "burped" it i could feel it flowing. Although today after letting it idle i felt it and it was hotter then its ever been and seemed pressurized. I couldnt squeez it if i tried but i assumed thats just because the pressure built up.
Horylev1145 is offline   Reply With Quote
Old 07-13-2013, 10:53 AM   #4
ski
4th Gear Member
 
Join Date: Mar 2006
Location:
Posts: 1,467
Default

The radiator fan should turn on and run at low speed when the coolant reaches 214 F, and at high speed when it reaches 225 F with the A/C turned off. It should run constantly when the A/C is turned on.
If it's not running, then either a fuse is blown, or the coolant temperature sensor, relay, electrical connector, or wiring is bad.
__________________
2005 Mustang GT/Manual/C&L Street CAI/Bama 93 Race Tune
ski is offline   Reply With Quote
Old 07-13-2013, 05:04 PM   #5
moosestang
6th Gear Member
 
Join Date: Sep 2006
Vehicle: 2006 mustang gt
Location: Gainesville, FL
Posts: 11,243
Default

Quote:
Originally Posted by JCON View Post
Few things possible here.

First, my car never goes over 194* and it gets in to the 90's here and my car is black. So 220* is hot!

Second, are you sure your thermostat is functioning properly?

Third, what ratio of anti freeze to water did you use? (Do you park your car in the winter?)

Fourth, with the car running and at operating temp, could you feel the fluid moving from the radiator to the block?
Then your car is a freak!

First, how are you reading the temps? The car has no coolant temp sensor, only a head temp sensor and the fan should come on high speed at 220* head temp. I have my high speed set to 195, so my head temps never go over 200.

Change the overflow cap and verify that the high speed fan is running. It should come on if you just let the car sit and idle. It will overheat if the fan isn't working, so get it fixed.
__________________
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 07-14-2013, 08:28 PM   #6
Horylev1145

 
Join Date: Mar 2012
Vehicle: 05-Ford-Mustang
Location: Michigan
Posts: 19
Default

The fan turns on when i turn the ac on so id assume thats working fine. I did some more asking around and everyone said i probaly had an air pocket in the system.

I jacked up the front of the car trying to keep the overflow tank at the highest point and let the car run at idle up to 200* while squeezing the upper radiator hose a good 50-60 times as it warmed up. So far it seems to have fixed the problem. No overflow/boiling or anything of that nature.

Car still runs hotter then id like. 190-200 when driving and up to about 215 when sitting still but the more i looked around that seems to be normal for these engines.

Also i was thinking since the car called for 13.6q and only needed 8 to fill after the flush i had about 5q of water possibly throwing off my coolant/water ratio. I will test that tomorrow once its cooled down.

And im reading the temps through the "torque" app for the android. Plugs into the obd 2 port and connects through bluetooth. Only reason i got the app was because i know the stepper motors for our gauges have been known to go out.
Horylev1145 is offline   Reply With Quote
Old 07-14-2013, 08:44 PM   #7
Lifter583
4th Gear Member
 
Lifter583's Avatar
 
Join Date: Apr 2008
Vehicle: 06 Black GT,08 Black GT500, 09 Metallic Silver V6 (wife's car)
Location: North Idaho
Posts: 1,433
Default

Quote:
Originally Posted by Horylev1145 View Post
The fan turns on when i turn the ac on so id assume thats working fine. I did some more asking around and everyone said i probaly had an air pocket in the system.

I jacked up the front of the car trying to keep the overflow tank at the highest point and let the car run at idle up to 200* while squeezing the upper radiator hose a good 50-60 times as it warmed up. So far it seems to have fixed the problem. No overflow/boiling or anything of that nature.

Car still runs hotter then id like. 190-200 when driving and up to about 215 when sitting still but the more i looked around that seems to be normal for these engines.

Also i was thinking since the car called for 13.6q and only needed 8 to fill after the flush i had about 5q of water possibly throwing off my coolant/water ratio. I will test that tomorrow once its cooled down.

And im reading the temps through the "torque" app for the android. Plugs into the obd 2 port and connects through bluetooth. Only reason i got the app was because i know the stepper motors for our gauges have been known to go out.
I only drive my cars in the summer so I installed a 160 thremostat in my GT and a 170 in my GT500 & set the fan turnon points...
__________________
My wife has said she is wondering when she will be in the garage and the GT 500 will be in the bedroom...I tell her thats just crazy...there is no way to get the car up the stairs!

There is NO problem that can't be solved by the simple application of more Horsepower!!
Lifter583 is offline   Reply With Quote
Old 07-15-2013, 12:06 AM   #8
Rudolph Hucker
3rd Gear Member
 
Rudolph Hucker's Avatar
 
Join Date: Oct 2012
Vehicle: 2010 4.6 gt with red leather
Location: sweden
Posts: 964
Default

expansion tank cap not sealing and letting pressrure out?
my v6 used to go very high...changed the cap and all was good
__________________
Rudolph Hucker is offline   Reply With Quote
Old 07-15-2013, 03:16 AM   #9
YoungBlood
1st Gear Member
 
YoungBlood's Avatar
 
Join Date: May 2013
Vehicle: 4.6 5sp-mt S197 GT
Location: Utah
Posts: 122
Default

My Jeep had similar issues. turned out to be the heater core leaking and the system not holding pressure/ boiling the coolant
__________________

Mineral Gray GT, 31k miles, 5spd mt, K&N CAI, American Racing Rebel wheels staggered w/ nittos, shaker 1000, lots of mods to come!
YoungBlood is offline   Reply With Quote
Old 07-15-2013, 10:18 PM   #10
JCON
5th Gear Member

 
JCON's Avatar
 
Join Date: Jul 2009
Vehicle: 2005 Mustang GT Convertible
Location: Delaware
Posts: 2,177
Default

Using the temp sensor I can read with OBD tool (not my tuner) I would like to put a gauge on the top of the radiator though. I set my value to turn on at 194, the only time I've seen/heard my fan on was idling for 15 minutes on a hot day. Generally runs very cool but then again I am running more water than anti-freeze so my heat displacement should be better than someone running more anti-freeze.
__________________
Like Mid-Atlantic Mustangs on Facebook
Mid-Atlantic Mustang's YouTube Channel

270rwhp 292rwtq - 4/21/12 - Stock 87 octane + 4.10's
283rwhp 296rwtq - 4/20/13 - Exhaust 87 octane + 4.10's
330rwhp 336rwtq - 4/19/14 - Intake, P&P TB, CMDP's, UDP's, LT's, O/R ProChamber, 4.10's + 93 tune
JCON is offline   Reply With Quote
Old 07-15-2013, 10:18 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

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 10:48 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

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