Question about 1995 Chevrolet Camaro
I've had cooling system issues starting with my heater core being blocked. I flushed that and now the heat works just ok. I'm thinking there is air in the system so I am trying to bleed the air. I have the car on a steep incline, radiator cap off. I top off the system and as the car heats up the coolant shoot out of the top of the radiator. The thermostat seems to work but not as it should, it heats up to 230 before dropping down. So I took the thermostat out but the same thing still happens... Why is the system still heating up even though I have removed the thermostat? I'm thinking there may be another issue.. Any and all help welcome. Thanks Joe
You are correct in your suspicions.
The thermostat blocks flow thru the radiator to help the engine warm up. The coolant still flows thru the block with the thermostat closed. If you remove the thermostat the cooling system should flow thru the radiator and stay below 160 degrees if the air temp is below 90.
If the thermostat is out and the engine is getting hot at idle speed, either the water pump has failed, or there is another blockage in the engine block.
Posted on Jan 09, 2013
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Posted on Jan 02, 2017
There is a blockage in the heater box. Some vehicles have a cabin air filter which can be cleaned/replaced. Others have to manually clean the heater core fins in the heater box.
Posted on Jan 29, 2010
SOURCE: Help with cooling system!!
OK, firstly The basis that a cars cooling system runs on is very simple. The system is a pressurized cycle that moves the coolant around, along with the heat, and is slowest in the radiator to allow heat to escape. If the system is not pressurized then the cycle will not work properly and coolant will not move.
If there is air in the system this can create what would seem like a blockage. 'bleeding the system is not the answer especially if you are using the drain on the radiator. That drain is only for draining fluid not air.
If air blockage is the problem then what you do is open the system at the highest point possible. this is usually a hose at the top of the radiator or something, whatever is easiest. Then find the other hose attached to the radiator, lower, higher makes no difference. then simply squeeze the second hose. this will 'burp' the air out do this for a while until all that happens is fliud is pushed out repeatedly.
then reattach the top hose and top up the radiator, and go for a drive.
If this doesn't fix the problem then air is not the problem.
Posted on Jun 11, 2009
Think there is a blend door on this model.It may not be staying open at high speeds.Not sure if it would be actuated by vacume or electric.Well just my 2 cents.
Posted on Jan 29, 2010
Testimonial: "have not thought about that but will that also cause the temp to start falling when u get over 50 and the heat to start coolin off thanks billy"
SOURCE: Issue with coolant system: Issue
AFTER REPLACING THERMOSTAT DONT STOP OVERHEATING.CHECK THE COOLANT FAN CLUTCH.WITH HOT ENGINE THE CLUTCH FAN SHOULD HAVE RESISTANCE WHEN TURNING IT WITH HAND.IF NOT FREEWHEEL.FAULTY CLUTCH FAN.HAVE TO REPLACE CLUTCH ON FAN.BAD CLUTCH ON COOLING FAN WILL CAUSE ENGINE OVERHEAT.WHEN CLUTCH FAN FREEWHEELS AT HIGH SPEEDS NOT PULLING ENOUGH AIR THROUGH RADIATOR CORES TO COOL DOWN ANTIFREEZE AND ENGINE.
Posted on Feb 16, 2011
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