Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 05-05-2011, 08:22 AM
Pickupman04 Pickupman04 is offline
AZ Native
 
Join Date: Apr 2011
Posts: 186
Default Collant leak 4.0 sohc

I suck at diagnosing cooling system issues. I did a new t stat and gasket about 10k ago and thats all fine and good and not where the leak is coming from.

Ive got a problem now a obvious coolant leak on one or both sides of the engine mainly drivers side with alot of glycol evidence all over the frame rails and suspension on both sides.

Im not to sure what it could be a f'ed freeze plug? The hoses all look fine and there is too much crap around the water pump to see if the gaskets gone bad.. MAYBE I OVERLOOKED SOMETHING?

In any case i have to get to the bottom of this and find out if its a simple leak or other issues can be causing a problem. And boys and girls the truck runs fine drives like a raped ape still so i really dont know. One last thing she has not showed the slightest sign of getting hot.
__________________
2004 FX4 LEVEL 2
2000 Mustang GT
1999 Ranger 2.5
1995 Ranger 2.3
1991 Ranger 2.3

Last edited by Pickupman04; 05-05-2011 at 08:25 AM.
Reply With Quote
  #2  
Old 05-05-2011, 01:04 PM
mransr mransr is offline
Ford Truck Driver
 
Join Date: Sep 2010
Posts: 88
Default Re: Collant leak 4.0 sohc

I just fixed a similar problem...it was the T-stat housing assembly; it was leaking where it meets the manifold (and/or a seam in the plastic itself). Antifreeze was running under the manifold and dripping (pouring) down the rear of the engine and all over the frame and trans.
__________________
mike

2002 Ranger XLT Supercab; 2WD, 4.0, Automatic
Reply With Quote
  #3  
Old 05-05-2011, 01:19 PM
01_ranger_4x4 01_ranger_4x4 is offline
OIF Veteran

 
Join Date: Feb 2010
Posts: 6,043
Default

Quote:
Originally Posted by mransr View Post
I just fixed a similar problem...it was the T-stat housing assembly; it was leaking where it meets the manifold (and/or a seam in the plastic itself). Antifreeze was running under the manifold and dripping (pouring) down the rear of the engine and all over the frame and trans.
I'm having that exact issue right now, leaking from the seam on the housing. Where did you find a new housing? You get it from ford?

[posted from my space aged wireless mobile communtication device using tapatalk]
__________________
2001 Ranger 4x4 Stepside
-RCD Suspension lift
-33x12.5 BFG KM2's on Mickey Thomson classic locks
-4:56 gears
-Auburn gear LS
-James Duff traction bars
-Headers
-Flowmaster duals
-SCT X-Cal2 and some small exterior mods

http://www.cardomain.com/ride/2321189

2005 F-150 Lariat 4x4
-LED third brake light
-Weathertech floor liners
-Edge tuner
Reply With Quote
  #4  
Old 05-05-2011, 01:48 PM
Pickupman04 Pickupman04 is offline
AZ Native
 
Join Date: Apr 2011
Posts: 186
Default Re: Collant leak 4.0 sohc

upon closer inspection it looks like its the lower half of the t stat clamshell pos plastic thing..

did you guys run into any issues changing it out maybe pointers for the install?

looks like ill be calling ford in 3 2 1
__________________
2004 FX4 LEVEL 2
2000 Mustang GT
1999 Ranger 2.5
1995 Ranger 2.3
1991 Ranger 2.3
Reply With Quote
  #5  
Old 05-06-2011, 10:46 AM
mransr mransr is offline
Ford Truck Driver
 
Join Date: Sep 2010
Posts: 88
Default Re: Collant leak 4.0 sohc

I got my parts at Rock Auto, real live Motor craft ones. here is a GREAT write up for it.

http://bengrosser.com/howto/fordthermostat/ the one thing I found that really helped me was removing one of the mounting bracket bolts near the lower hose connection on the housing; it made getting to that clamp A LOT easier.

and I had to get the 2 new temp sensors too, but I think that is only an issue in the earlier SOHC 4.0s.
__________________
mike

2002 Ranger XLT Supercab; 2WD, 4.0, Automatic
Reply With Quote
  #6  
Old 05-12-2011, 11:56 AM
Jazz921 Jazz921 is offline
Gears
 
Join Date: Jul 2009
Posts: 576
Default Re: Collant leak 4.0 sohc

Im doing this repair this weekend myself. What a pain in the butt to track down to!
Reply With Quote
  #7  
Old 05-12-2011, 07:45 PM
Ramsey Ramsey is offline
wanna go test the km2's
 
Join Date: May 2011
Posts: 19
Default

Dude I got the perfect solution for you I have an 03 4.0 and I had a coolant leak near the thermostat and it looked like the housing. IT WASN'T it was a 25 cent o ring on the temp sensors I replaced the thermo housing and replaced the gaskets started the truck and it still leaked. Now I looked closer the temp sensors had leaked by the little o rings which fill the valley and simmer coolant giving you the smell of burning coolant and no obvious leak point. Lastly the o rings on the sensors didn't look that bad cracked split or otherwise but that was the leak replaced the o rings a d it hasn't leaked for 10k plus miles
__________________
2003 XLT Ranger 4.0 5 Spd manual
Mods: New 4.0, 3 inch superlift kit, custom mounted 8000lb warn winch, 4.11 gears, one off traction bar, KC slimlite daylighters x4, fords traction-lok posi w/ revised friction ordering, centerforce stage 1 clutch, 17 inch rims w/ 33" Bfg KM2's, JBA firecone headers, single chamber flowmaster, full 2 1/2" exhaust, Superchips flashpaq tuner, K&N 77 series cold air intake, Demon coil pack, uniden cb radio, leather tonneau cover and still waiting for more.
Reply With Quote
  #8  
Old 05-20-2011, 01:56 PM
Pickupman04 Pickupman04 is offline
AZ Native
 
Join Date: Apr 2011
Posts: 186
Default Re: Collant leak 4.0 sohc

Well it was the clamshell, i ended up doing the job.. just to be sure. new orings and all..
__________________
2004 FX4 LEVEL 2
2000 Mustang GT
1999 Ranger 2.5
1995 Ranger 2.3
1991 Ranger 2.3
Reply With Quote
  #9  
Old 05-21-2011, 04:28 PM
LiveLifeChill LiveLifeChill is offline
Ford Ranger Driver
 
Join Date: Oct 2010
Posts: 1,420
Exclamation Re: Collant leak 4.0 sohc

Hey i just did this to my truck last weekend too and it seems to be kinda popular. there is no how to on here for it(not that i see). is there anyway to post this one up? it was recomended to me thank God.

http://bengrosser.com/howto/fordthermostat/
__________________
2006 XLT 4.0SOHC
Herculiner>Cab&Bed A.R.E. Camper Shell> 2 Yakima Racks. Pioneer Sound System>Head Unit/6x8's/10" Sub 300 Watt 4-Channel Amp + 2 Marine Speakers
in the Shell.Aftermarket Fuse Box All the Extras Run Off Their Own Fuse Box. Various other mods. Near future plans are a solar panel system and deep cell battery.
Reply With Quote
  #10  
Old 05-23-2011, 01:03 PM
Jazz921 Jazz921 is offline
Gears
 
Join Date: Jul 2009
Posts: 576
Default Re: Collant leak 4.0 sohc

Just performed this repair and found that the lower thermostat housing had split along the seam on the backside causing my coolant leak. When I picked up the parts from Ford, I asked about how much of an issue it was and they told me they had at least 6 sets of all the parts in stock to fix these issues.
Reply With Quote
  #11  
Old 05-29-2011, 06:42 PM
north44 north44 is offline
Ford Truck Driver
 
Join Date: Jan 2010
Posts: 77
Default Re: Collant leak 4.0 sohc

The plastic gets old, heat makes it brittle, and the seams will tend to develop leaks over time - this is a common problem - even the top part on my Ranger's thermostat housing is starting to develop small leaks along the seams (started about 7 years into ownership) - the lower part was changed about 6 years into ownership (truck bought new), so I'm assuming that that will be about the average life of the piece anyway.

Be aware that when changing it, it will be prone to breaking apart into little pieces because the plastic will be quite brittle by that time.
__________________
2003 Supercab Flareside
4 liter V6
4x4 FX4 Level I
5 speed Auto
4.10 LS Rear

Last edited by north44; 05-29-2011 at 06:43 PM. Reason: corrected years leaks developed
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
3.0 to 4.0 sohc v6 conversion radranger98 3.0 Vulcan Tech 0 03-14-2011 07:56 AM
Do I have a SOHC? I Christian Vance 4.0 SOHC / 4.0 OHV Tech 7 12-08-2010 03:27 PM
Replaced fuel pump - now have evap leak - slow leak detected drewglenn04 4.0 SOHC / 4.0 OHV Tech 0 11-04-2010 08:48 PM
Sohc ? 08xlt 4.0 SOHC / 4.0 OHV Tech 3 02-27-2010 12:49 PM
4.0 SOHC exhaust ford all day Exhaust and Mufflers 4 01-13-2010 08:21 PM