Head Gaskets!!

My mechanic bled the system out according to the tech review on LVC for about 45 mins and said he got it the best he could, any other ideas or suggestions on bleeding the air out?
 
Best way to do it is to use a machine to literally vacuum the air out, but if you don't have access to one the instructions in the tech write-up are the probably best alternative.

Another thing you might want to check, take off the plastic cover over the radiator and look down between the radiator and AC condenser and be sure there aren't a bunch of leaves and crap stuck down in there.
 
I have info from All Data on messing with the cooling system. When I get done working on this laptop, I'll get it from my desktop and post it for ya.
 
NYC LS8 said:
I have info from All Data on messing with the cooling system. When I get done working on this laptop, I'll get it from my desktop and post it for ya.
Click to expand...

Here it is:

Cooling System Draining, Filling and Bleeding

Draining

WARNING: Never remove the pressure relief cap while the engine is operating or when the cooling system is hot. Failure to follow these instructions can result in damage to the cooling system or engine or personal injury. To avoid having scalding hot coolant or steam blow out of the degas bottle when removing the pressure relief cap, wait until the engine has cooled, then wrap a thick cloth around the pressure relief cap and turn it slowly. Step back while the pressure is released from the cooling system. When you are sure all the pressure has been released, (still with a cloth) turn and remove the pressure relief cap.

CAUTION: The coolant must be recovered in a suitable, clean container for reuse. If the coolant is contaminated it must be recycled or disposed of correctly.

CAUTION: Care must be taken to make sure the accessory drive belt does not become contaminated with engine coolant.

CAUTION: Vehicle cooling systems are filled with Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same coolant that is present in the system. Do not mix coolant types.



Wrap a thick cloth around the coolant pressure relief cap on the degas bottle. Slowly turn the cap counterclockwise (left) until the pressure begins to release. When the pressure is released, remove the pressure relief cap.
NOTE: Less than 80% of coolant can be recovered with the engine in the vehicle. Dirty, rusty or contaminated coolant requires replacement. Place a suitable container below the radiator draincock. If equipped, disconnect the coolant return hose at the oil cooler.
Close the radiator draincock when finished.
Filling-Bleeding

WARNING: Do not open the cooling system while it is hot or the engine is running. Failure to follow these instructions can result in personal injury.

CAUTION: Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.

When adding engine coolant, use a 50/50 mixture of engine coolant and clean, drinkable water.

To maintain the integrity of the coolant and the cooling system:


Add Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Use the same coolant that was drained from the cooling system. Do not mix coolant types.
Do not add Motorcraft Specialty Orange Engine Coolant VC-2 meeting Ford specification WSS-M97B44-D (orange color). Mixing coolants can degrade the coolant's corrosion protection.
Do not add alcohol, methanol, brine or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
Do not mix recycled coolant unless it meets the requirements of Ford specification WSS-M97B51-A1. Not all coolant recycling processes meet these Ford specifications. Use of such coolants can harm the engine and cooling system components.
3.9L engines









Remove the engine fill cap. 3.0L engines








Open the engine air bleed. All engines








Open the heater air bleed.
Add coolant to the degas bottle allowing the system to equalize until no more coolant can be added. 3.0L engines








Close the engine air bleed when coolant begins to escape. All engines Install the degas bottle cap. 3.9L engines CAUTION: Care must be taken to make sure the accessory drive belt does not become contaminated with engine coolant.
Add as much coolant as possible to the engine fill. The heater air bleed will remain open.








Install the engine fill cap.
Install the engine fill cap until contact is made. then tighten an additional 45 degrees (1/8 turn).
All engines



NOTE: The heater air bleed remains open. Start the engine and turn the heater to the MAX position.








Close the heater air bleed when a steady stream of coolant escapes during engine idle.
Allow the engine to idle for five minutes. add coolant to the degas bottle as needed to maintain the cold fill MAX mark.








Open the heater air bleed to release any trapped air and close again. 3.9L engines Maintain engine speed of 2,000 rpm for 3-5 minutes or until hot air comes from the heater.
Return to idle and verify hot air is still coming from the heater. 3.0L engines Maintain engine speed of 1,500 rpm for 3-5 minutes or until hot air comes from the heater.
Return to idle and verify hot air is still coming from the heater. All engines Set the heater temperature setting to 24°C (OFF) and allow the vehicle to idle for two minutes.
Shut the engine off and allow to cool.
After the engine has cooled, add coolant to the degas bottle to bring the level to the cold fill MAX mark.










© 2008 ALLDATA LLC. All rights reserved.
Click to expand...

:Beer
 
Im having some of the same issues. I heard that there is a sensor that when bad,, makes the car believe it overheating but its not.

Anyone know the nameof the sensor and where I can get one?
 
CHT - Cylinder Head Temperature sensor. It's under the intake manifold aout an inch in from the last cylinder intake port on the passenger side.
 
the tech article I posted on bleeding the system is straight form the Ford Shop Manuals.

The V8 has two coolant pumps - one belt drive and then an electrial aux pump - just add complexity to the troubleshooting.
 
I had one of the CHT sensors go on my 2000 V8 a few months ago. Covered under extended warranty. Same symptoms of intermittent overheating. Replaced tstat first, only to have symptoms reappear after a couple weeks. Then replaced the CHT sensor, been fine since.
 
pektel said:
I had one of the CHT sensors go on my 2000 V8 a few months ago. Covered under extended warranty. Same symptoms of intermittent overheating. Replaced tstat first, only to have symptoms reappear after a couple weeks. Then replaced the CHT sensor, been fine since.
Click to expand...

Thanks QUIK.

Pektel,, where u get your sensor and how much?
 
NYC LS8 said:
Here it is:



:Beer
Click to expand...

Yeah, I logged on to All Data too and got the same directions...Thank you tho! I didn't want to say it before but I run a small used car lot and have 2 mechanics, once I found that article on there he went to work, he was very optimistic but he was very impressed by the write ups on here said you guys know your stuff and thanks for the help!
 
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