Heck no,We all try to help. I believe that's why we're here.
Sometimes there are situations where we know when to back off and I felt this was one of those times for me.
Please, anytime you or anyone else wants to offer a step, solution , suggestion where I am trying to help someone, please do !
Sometimes we can get in so deep as you will recall with the Ford problem you had a while back that we need to take a few steps back and look at what we have. Better judgement is supposed to help keep us out of trouble and I am hoping better judgement at this time will hopefully prevent this in my particular case. I do appreciate your concern and assistance and at no time was I ever offended by anyone trying to help,what else can I say?

 

some people get careless when working on a vehicle that don't belong to them. and the next thing they know is it comes back to the owner in worse shape than when the owner took it in to be fixed in the first place. and there is the problem of wrong parts being installed on the wrong engine or location on the engine. and it dawned on me that most vehicles have a temp. or idiot light instead of a gauge and the parts people working behind the counter don't realize the mistake and end up getting the wrong part and that in itself will cause a gigantic headache for the owner. even if the wiring is in good shape and not burned or the insulation on those wires ain't cracked or worn in any way. I am just trying to make it clear that with so many sensors on a vehicle it would be easily missed and end up costing the customer a lot of time and money to get it right. I fixed that problem I had by getting rid of it or letting it go back to the loan company. and letting someone else have the headache instead of me trying to fix it and wasting all my money.

 

I took the plug off the temp sensor and checked it for volts... Suppose to have 5 volts but I'm getting 11 volts... Any Ideas ???

 

Because all engines are not the same, even on the same models, it would be a good idea to get an accurate wiring diagram for your particular vehicle then start tracing where the voltage comes from for those sensors.
Still don't know if your particular engine on a 2000 E350 5.4 uses only a CHT or an additional coolant temp sensor. Until that is known, I would be hesitant to say one way or the other.
I do have a question that has been puzzling me ,and that is ,are you absolutely SURE the engine does not have an overheating problem? From your earlier descriptions it sounds like it does.

 

It does ONLY when the engine is cold, Once it warms up it does NOT over heat...I know that sounds crazy....And it has 2 sensors... a temp sensor and a cylinder head sensor and they both have been replaced. The cylinder head sensor is working properly but the temp sensor which operates the temp gauge is not..It reads dead cold until it spikes hot at which point I shut the engine down for a minute and restart and the gauge reads dead cold and it will continue to do that until the engine warms up and then it is fine....Like I said earlier I tested the temp sensor plug and it is reading 11 volts instead of 5. I tested the plug on the cylinder head sensor and that reads 5 which they both should read 5

 

hanky why in the heck would they put two engine temp sensors on any engine? and the one on the cylinder head is going to be way hotter than the engine block due to the firing of the plugs and the exhaust of the gas being burned. it just doesn't make any since to me. as far as I can figure the reason this person is having a problem with the pcm and not with the sensors. the reason I say that is it's not getting hot at all and the pcm is confusing the engine temp with the temp of cylinder head

 

Ford has some good ideas believe it or not !
The CHT with the later years is the only temp sensor they use.
What they have done is to have the computer disable injectors and just pump air through the cyls when an extreme overheat condition is taking place. It is supposed to help protect the engine from severe damage.
In CCavens posts he states that he does get some coolant discharge on warm-up or at times and that leads me to believe compression is getting into the cooling system.
It would seem to me that should be taken care of before chasing a temp gauge problem. You could be right on both ideas of a wiring problem or possibly a PCM problem. I'm pretty sure that coolant circuit shares some powers and grounds with the O2 sensors and to me, at least, the gauge thing is secondary and the primary thing would be to find out why it's kicking out coolant. What do you think ?

A code 1299 was the original problem and the sensor worked as designed because there was an overheat problem. There is good possibility there was nothing wrong with the original sensor. Just because you get a code doesn't always mean the sensor is defective.

Has the oil level been checked to see if any coolant is escaping into the lube system?

 

It ain't uncommon to lose some coolant while warming up an engine that's what the recovery jug is for. have you ever left the cap off of the radiator and watch the coolant spill out. and wouldn't the coolant evaporate if the compression was getting into cooling system warm or cold? that would also make the engine run rough like a dead miss. so no I don't think that the cooling system is getting compression from the cylinders

 

I think you are assuming it would have to have a big leak, but if the leak is small enough to allow air to get in where there should be coolant it gets hot fast. I suspect whatever is going on is sealing up as it gets warm/hot. Nevertheless , something is going on in that engine .

Ask yourself why Ford walked away from that problem.

 

the next time he starts his vehicle up when it's cold he needs to take a look at the exhaust pipe and see if there's too much steam coming out of it. if there is then that would explain the loss of coolant if it can't be seen then take whiff of the exhaust and if it smells like kool aid then he's got a problem more serious than the sensors