Question about Cadillac Cars & Trucks
Use a quality system flush to clean the entire cooling system out. there may be a clog in the system somewhere.
Posted on Nov 25, 2013
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Posted on Jan 02, 2017
SOURCE: engine overheating
No water pump issues I am aware off, are you sure you bled the air out of the cooling system? If not fill the overflow bottle all the way full, then use a floor jack and raise the front of the car as high as you can ( this allows air to go to top of radiator tank), then run the engine at high idle speed until the cooling fan ( I assume the fan works OK?) comes on, but avoid letting the engine get into the overheat area of the guage, if it does turn it off, run water over the radiator until it cools, check the tank and radiator, top off if you need to and repeat above procedure, if this doesn't work you have some other problem like no or little flow in radiator.
Posted on Jul 27, 2008
SOURCE: lincoln ls overheating
Cheap try is new radiator cap. If it cant pressurize the system the boil temp lowers considerably. If put new cap on and still over heat could have bad head gasket or a blockage in radiator...Cap is common and 10.00 to fix....
Posted on Aug 11, 2008
Are you putting the thermostat in correctly? It it will not work backwards.
And to confirm that there isn't a different problem, take the thermostat out all together and see if it overheats.
Engine not fully warming up is not usually caused by the thermostat. Stats usually fail closed, not open.
You will want to check the water temperature sending unit or gauge after verify the water temperature with an external calibrated thermometer. You can attach and insulate the external thermometer to the housing where thermostat is located.
Reply back what you figure out. I will be happy to help you further.
Posted on Feb 03, 2009
hi jasso, I would recommend checking the water pump if you see no flow in the radiator. Make sure when you fill up the cooling system, that you fill it cold, and that the vent screw in the radiator is loose. fill system until fluid comes out the vent screw. tighten the screw, start the car and have someone run at 1500rpm and check for flow.also, make sure that you have your temp setting full hot and blower on middle speed so that you don't trap air in the heater core.
Posted on Apr 05, 2009
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