I had to replace my head gasket and my rock arm cover gasket because my car was running hot and they had broke it worked for a while then it started to run hot again I replaced the water pump thermostat I had my radiator flushed and I changed my coolant sensor it still runs hot I can see and hear bubbles going into my reservoir and instead of coolant going through my engine I get steam when it gets hot any suggestions
Probably a cracked cylinder head or block, or both. Or the head was warped and the head gasket has blown again.
When the engine gets very hot the gasket expands, and after a few times it will not return to its original shape.
SOURCE: I've got a 96 Buick Regal Custom 3.8L V6. It's
the one thing that comes too mind is trapped air-when i do a radiator I always start up and warm engine so thermostat cycles a few times to make sure that you dont trap air in colling system. you did not say so but if you didnt, its really not a bad idea to change thermostat and gasket when digging into colling system. they are usaully fairly cheap.
SOURCE: Found rust like material in water system change
You may have to flush the system again. Did you use a commercial flush such as Prestone Super Flush? Plain water won't remove the rust and sludge. The Dex-cool antifreeze that GM recommends for their cars is bad about forming a gummy sludge in the cooling system. It clogs radiators and heater cores. I would suggest another flush with the Prestone product. Follow the directions closely for best results. One thing that will help is. after you drain the radiator, refill with clear water and let the engine run until the coolant is circulating good, then drain it again. Do this three or four times. This will ensure that all the antifreeze has been removed from the engine block. When you refill the radiator, use a green antifreeze that is compatible with aluminum radiators and aluminum engine parts. Do not use Dex-cool. Dex-cool can also cause the intake gaskets to fail. Make sure the new thermostat is at least a 195degree unit and that it is installed correctly. you would be surprised how many thermostats get installed upside down. After refilling the radiator, leave the radiator cap off and let the engine run until the coolant is flowing. Keep adding antifreeze each time the coolant is pulled down into the radiator. Use full strength antifreeze because the water that is retained in the block will dilute it. A 50/50 mixture won't protect below freezing.
SOURCE: My 1995 Riviera is overheating and this has become
I think you might want to have your cam sensor checked
SOURCE: My 2002 buick rendezvous is overheating. The water
first check to make sure the cooling system is not air bound,takes a while to bleed off the air,try this and get back to me Thanks Ray
SOURCE: ok. guys. i am losing coolant. it is not showing
If the coolant is leaking at the head gasket or the intake manifold gasket slowly, then new gaskets will have to be installed. The bubbles coming up is a bad sign that the seal of the coolant system is bad or it's overheating the coolant to the point that it boils over.
The overheating may be due to air or vapor in the cooling system not allowing fluid to flow freely.
Did you put a 50/50 concentration of coolant to water into the cooling system?
Also, check the fan to see if it is turning on when the car is at operating temperature at idle.
May need to be flushed out and new coolant installed to increase cooling efficiency.
Good luck on this repair.
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