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I am having a major problem with over heating in my 2005 Ford Five Hundred 3L Duratech V6, I have replaced the Water Pump, Thermostat, & Housing (upper & Lower piece) But it still acts as if the T-stat is sticking. I am beginning to think it’s something Internal. Could you give me a little feedback as to your thoughts? I have Checked for Leaks thru out Cooling System, There are none.
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Stupid question followed by more stupid questions.
How are you checking the temperature/know it is overheating? If it is just by the gauge the gauge may be bad or the temp sensor or the wiring to and fro with the ecm thrown in the mix for good measure.
Is your engine fan running? Does it run only at idle? If there are 2 are they both running when they are supposed too?
Do you get white smoke out of your tailpipe?
Does your oil look like a Wendy’s Milkshake?
Is your coolant level the same after you have run it and it has recooled.
Does your coolant reservoir/ surge tank look brown, black, smell of oil, or look like a Wendy’s milkshake?
Man now I want a Wendy’s milkshake.
the fans are running as they should, they come on & off as normal. There is no steam coming from the Tailpipe, there is no Water mixing with the oil, or “MILKSHAKE” It does not seem to be a Head Gasket which is what it sounds like you hinting towards. The water is boiling off, I can see & hear the water boiling into the reservior thru the overflo hose on the reservior, I am not going off just the gauge. I have to add water after each time I drive it, even after driving for a few miles Aprox (5-Miles) there is a Point when the temp gauge will drop immediately down to what would be normal running for the car. and at that point on I am almost always safe to continue driving to where I need to go. But I almost always have to add some water after I get there.
Try replacing the rad cap or degauss bottle cap. (Forget what’s on that car) If the system isn’t pressurized nothing will work correctly.
It has the degauss cap. I don’t have the means to Pressure test anymore, But It doesn’t seem to be holding pressure very well. Sorry I should have put that in my last post. And Thank You Mr. Wysetech. For having the comon Courtesy of not telling people thier asking Stupid Questions!
I wasn’t referring to you I was referring to myself sorry for the misunderstanding. I call them stupid questions because they are stuff that most DIY people and mechanics already know and if someone knows their stuff they tell you, you are stupid for asking them they would have already known what the problem was.
Once again sorry for the misunderstanding. We get people in here of varying skill levels.
You can rent a pressure tester from Autozone or the like. It will help trust me. That’s what I would do.
I stopped doing this Professionally back in 1990! I do know alot about cars, But I was told this car has what is called a Reverse Flow Cooling System. That is new to me! Sometimes a DIY person needs to ask few questions to get caught up on somthing that might be new to them. In this case, It is me! reguardless of who you are talking to, you should refrain from telling people they are asking STUPID questions. To me your stupid comment is obviously towards the question I asked.
I would think if there were a head gasket leak, the engine would run horridly and you would get some real nasty smoke out of the exhaust, like tons of steam, not just the normal tiny steam from normal by-product water that happens in all engines.
One thing that is easy to overlook but is the heater core possibly leaking? A lot of times that will leave a puddle on the passenger floor board. Lift the mat just for sake of argument.
Either the engine is burning off coolant or it is leaking bad somewhere. That isn’t gonna change just because it is a newer car.
Anyways, let us know cause with losing THAT much coolant, it would seem either a real evident leak or blown head gasket.
Side note on that – Cooling systems are a REAL pain in the ass. Not always hard to work on but just so prone to failure and hidden leaks.
I agree totally, there are no signs of a blown head gasket. I can insure there is no moisture in the floor board, I have looked thoroughly thru the outside of the car and thru out the dash and have not seen any leaks anywhere. I am truly baffled by this. Like I said in a earlier post, this Reverse Flow Cooling System is new to me. I have just come to the conclusion that the water is just simply boiling off in side the system.
“I agree totally, there are no signs of a blown head gasket.”
Well, I don’t agree.
1. Make sure the cooling system is purged of air.
2. Make sure the cooling system is capable of holding the correct pressure.
3. Do a block test.
Thank You for your input Barnyb, and everybody’s as well. I will get hold of a pressure tester today, and come back with my input on the testing. Thanks again to all!!!
Have you pulled your transmission dipstick? If it is cooled at the radiator there is a chance of it going in there.
Also head gasket is not the only way to get the milkshake if you have a water cooled intercooler/Charge Air Cooler, coolant based oil cooler it can do it as well, as well as through cylinder walls through a process of porous or permeable cylinder walls.
Also have you checked at the freeze plugs it is rare but, I have seen it before.
I was not trying to insult you in any way I am sorry for you taking it that way.
Just for your information if you’re not sure. On a reverse flow cooling system the coolant flows to the cylinder heads first instead of the block first. It took all the bright automotive engineers many years to decide that the hottest parts of the engine should be cooled first.
I haven’t checked the trans fluid, I have to take the air filter assembly off to do that. I will check that tomorrow, I do not believe there is an oil cooler, but I will check that as well. I was told today that when my Father checked the oil, he said it was over 2 quarts low! He is very thorough with oil changes and checking oil. So this is a concern to me to be 2 quarts low all of a sudden. I’ve never thought about freeze plugs because I have many checks for leaks under the hood, and have not seen a single leak since I replaced the T-stat housing.
I appreciate your apology, and I offer my apologies for being so agressive about the situation. Thank You very much for your input on this matter. I greatly appreciate all your input. I have looked at all that you have suggested. Your input as well as everybody’s has been very helpful. I am glad I found this forum.
THANK YOU!!! HAVE A WONDERFUL NIGHT!!!
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