MustangWorks.com - The Ford Mustang Power Source!

Go Back   MustangWorks.com : Ford Forums > Mustang & Ford Tech > Windsor Power
Register FAQ Members List Calendar Mark Forums Read

Reply
 
LinkBack Thread Tools Rate Thread Display Modes
Old 10-08-2002, 06:08 PM   #1 (permalink)
Falcons Talon
T.P.M. President
 
Falcons Talon's Avatar
 
Join Date: May 2002
Location: Brownsville
Posts: 265
Question Cooling system not building pressure

I just got my car back from having the oil pump changed and as I was driving home(20 minutes), the car started gradually heating up. I immediately thought it was just the factory gauge the way it was just creeping up, but the overflow tank was getting overflowed. I cooled it off and refilled the water system thinking it may have been an air pocket. After another 20 minute drive, it did the same thing. It wasn't the thermostat because water was flowing freely. I decided to redo the cooling system. I had the 3 row radiator lined out, changed all the hoses just in case they were collapsing, changed the water pump just in case the impeller was corroded, and while I had the motor apart upgraded to a '95 alternator(thanks for all the wring guides). I also had the air con recharged and after driving all over town for over an hour, the gauge went up a little more than 1/4, but never went over 1/2. When I checked to make sure that nothing was leaking, I noticed no pressure in the hoses but no overflow either. I changed the radiator cap just in case as well. When I took it for another drive, it still didn't build pressure. . All parts are torqued down and I'm not losing water. I checked to see if there was water in the oil and it's clean as well. Is this normal, and if not, is this a problem? I haven't even put on the Black Magic Fan. I'm just using the regular fan clutch with the stock fan.
Falcons Talon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-08-2002, 10:30 PM   #2 (permalink)
PKRWUD
Junior Member
 
PKRWUD's Avatar
 
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
Default

First off, your initial problem was due to a defective cap, or one that wasn't rated high enough.

As far as building pressure, if you aren't, and you'r gauge isn't pegged, then the t-stat isn't closing.

You should have a 192 degree t-stat, and your upper hose should become firm withing 10 minutes of idling. When it becomes firm, it means that the t-stat has opened. If it never becomes firm, yet the temp gauge doesn't peg, then something is obstructing the t-stat from closing completely.

Take care,
~Chris
__________________
Webmaster:
Rice Haters Club
Jim Porter Racing
Peckerwoods Pit Stop


Support Your Local
RED & WHITE!
PKRWUD is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-11-2002, 11:45 AM   #3 (permalink)
Falcons Talon
T.P.M. President
 
Falcons Talon's Avatar
 
Join Date: May 2002
Location: Brownsville
Posts: 265
Default

Being a little burnt out on being on and under my car, I went down to AZ and borrowed the coolant sytem pressure tester. I pumped her up to 17 and listended for leaks. Pressure was good with no visible or audible leaks so I jiggled the upper radiator hose and it hissed at the radiator. I took off the hose and noticed that the radiator inlet was no a perfectly round, but actually a little mishapen. I tightened down the clamp on an unbent portion, repressurized, jiggled, and voila. I thought I was slick. Then I drive her the 20 minutes back to work in 90 deg sunny weather w/ the AC on and it didn't heat up at all. I stop to put gas and popped the hood to feel the pressure in the hoses...NO PRESSURE! God I hate working on the thermostat. Two bolts and no room to work...

Thanks PK
Falcons Talon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-11-2002, 12:31 PM   #4 (permalink)
Falcons Talon
T.P.M. President
 
Falcons Talon's Avatar
 
Join Date: May 2002
Location: Brownsville
Posts: 265
Question

Just out of curiosity...wouldn't the sytem still build pressure with the thermostat stuck open?
Falcons Talon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-12-2002, 12:37 AM   #5 (permalink)
dragstang86
Registered Member
 
Join Date: Sep 2002
Location: baltimore, md
Posts: 220
Default

It wont produce any pressure until there is heat in the system unless you are leaking compression into the coolant because of a blown head gasket, cracked head or cylinder wall, etc.. but that isnt the case so ill stop rambling. My car also has run really cold ever since i got it and Im sure its the thermostat i just havnt had the time to mess with it.
dragstang86 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-12-2002, 10:29 AM   #6 (permalink)
Falcons Talon
T.P.M. President
 
Falcons Talon's Avatar
 
Join Date: May 2002
Location: Brownsville
Posts: 265
Default

Hey, it's building good pressure... maybe the thermo got "unstuck", or maybe it's cooling TOO well??? Whatever the case...I'm no longer overheating. Thanks to EVERYONE for yur help and advice...
Falcons Talon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Sponsored Links
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On
Pingbacks are On
Refbacks are On



Similar Threads
Thread Thread Starter Forum Replies Last Post
NEED HELP!!, cooling system problem TRICK_5_0 Windsor Power 2 08-21-2003 11:02 AM
How to completely drain a 5.0's cooling system??? Italianstanger Windsor Power 1 07-13-2002 12:18 PM
how about a revese flow cooling system? nitrousjunkie Windsor Power 2 04-01-2002 12:45 AM
How to clean cooling system??? Fostang Windsor Power 1 07-15-2001 07:13 AM
Cooling System problems 1973Mach1 Classic Mustangs 7 06-25-1999 11:33 PM


All times are GMT -5. The time now is 02:44 AM.


SEARCH