Random Overheating Issue? '04 Thunderbird

I wanted to share the end to a random overheating issue our '04 Thunderbird had for years. So I am clear, this issue would only pop up a couple of times each summer; the car is garaged as soon as the snow appears and doesn't come out until Spring. I had replaced the thermostat years prior and while I thought doing so initially cured our woes, overheating would haunt us from time to time - normally shortly after restarting and driving (warm engine conditions). The head over-temperature fault code would trip, but other than that no additional symptoms would present.

Well, just behind the t-stat housing is another piece of plastic that houses a plastic coolant hose. In our case that plastic cross-hose was deteriorated. It is my theory that such a condition would under the right conditions create uneven coolant flow conditions and overheat the engine (heads). If you are experiencing random overheating, I recommend you pull the hoses and inspect this part. I apologize that I didn't attach a photo or diagram, but it's pretty easy to see and repair. Of course, don't forget to bleed the coolant system anytime you replace a part (details found on the "2002 Overheating" post and on YouTube.
 
I wanted to share the end to a random overheating issue our '04 Thunderbird had for years. So I am clear, this issue would only pop up a couple of times each summer; the car is garaged as soon as the snow appears and doesn't come out until Spring. I had replaced the thermostat years prior and while I thought doing so initially cured our woes, overheating would haunt us from time to time - normally shortly after restarting and driving (warm engine conditions). The head over-temperature fault code would trip, but other than that no additional symptoms would present.

Well, just behind the t-stat housing is another piece of plastic that houses a plastic coolant hose. In our case that plastic cross-hose was deteriorated. It is my theory that such a condition would under the right conditions create uneven coolant flow conditions and overheat the engine (heads). If you are experiencing random overheating, I recommend you pull the hoses and inspect this part. I apologize that I didn't attach a photo or diagram, but it's pretty easy to see and repair. Of course, don't forget to bleed the coolant system anytime you replace a part (details found on the "2002 Overheating" post and on YouTube.
 
Thank you for the information. In my case, the thermostat housing had cracked and was leaking. The replacement part [Dorman 902-903 Housing Kit Assembly] was installed, which solved the problem. I suggest ( for ALL that are interested) to go on line and review the assembly, because for $77.95 and less than 30 minute labor, precaution is better than failure.....Regards, Michael (2004 Bird)
 
I have had too many cracks and leaks with all that plastic crap they use. Living in Las Vegas is hard on plastic. I have replaced the thermostat housing, then years later had to replace that plastic tube from the thermostat housing to the middle of the engine just under the intake manifold. and they way they built the engine In order to remove the plastic water tube I had to remove the intake manifold. Then I have had the water pump leak twice. I had bought the first one with a life time warranty.
my last problem was the coolant recovery tank cracked. Found one on line NEW OEM part for $38 with the hose from AM Auto parts.
 
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