running hot
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running hot
my 1997 ford f150 4.6 triton runs hot after 1 minute of idleing I changed the two coolant sensors,flushed the radiator, and changed the thermostat.
I also went to have a diagnostic done at two diffrent places and nether one could get a reading any help is appreciated thank you
I also went to have a diagnostic done at two diffrent places and nether one could get a reading any help is appreciated thank you
Elder User
Joined: Aug 2011
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From: Chico,CA.
Did you do all the service items in response to the overheating, or did the overheating start after all the cooling system work? If the overheating started AFTER the thermostat replacement, I would suspect it is installed backwards.
Fleet Owner
Joined: Apr 2008
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From: 0,0,1
Loosen the t-stat bolts and add to the radiator until coolant leaks out at the t-stat, then tighten the t-stat bolts.
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ok replaced water pump added new coolant sensors,after a overnight cool down i started the truck 30 seconds and coolant hand shoots to hot drive around for 30 minutes than park truck top radiator hose hard as a brick it stayed that way for an houri opend the over flow jug and hose went back to normal any help with this would be appreciated
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Hotshot
Joined: Jul 2005
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I don't see how the gauge can be in the red zone in 30 seconds. You would think with new pump and full of coolant, it would take several minutes to raise up ?? ....... I think I would take the thermostat OUT and leave it out for a test. Start with the overflow cap off and see if your getting excess exhaust gas out the top ? 30 seconds is DRASTIC.
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yes guys my mechanic used his thermometer and all the temps checked out ok i removed the thermostat when i flushed the engine and never put it back in.how can i tell if excess gas is coming thru the over flow jug?
Hotshot
Joined: Jul 2005
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you should see bubbles comeing up thru the overflow if there is gas... also the tank might surge and BURP out antifreeze..... of course, the tank level will expand and some fluid might come out normally after several minutes with motor up to temp.
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there is no bubbles other than the natraul flow like the water pump is pumping.
also when it runs hot it does not run out the overflow the top hose ges hard as a brick like something is blocking the flow,when i relieve the pressure by slowly opening the cap on the jug then the jug fills and the hose goes soft.
also when it runs hot it does not run out the overflow the top hose ges hard as a brick like something is blocking the flow,when i relieve the pressure by slowly opening the cap on the jug then the jug fills and the hose goes soft.
Hotshot
Joined: Jul 2005
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water goes from the thermostat, thru the top hose into the radiator.. If the top hose is ALWAYS HARD, it sounds like your not getting flow thru the radiator, that it is deadheaded......... I would remove the bottom hose and see if you can pour water thru the top hose , thru the radiator, and out the bottom... it does sound like something is plugged in the hose, in the radiator, or bottom hose back to the pump.