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07 equinox overheating at idle coolant not circulating at

Customer Question
all removed thermostat just...
07 equinox overheating at idle coolant not circulating at all removed thermostat just to make sure was not the problem fans come on full blast air is cold from radiator
JA: Have you checked the coolant? Have you checked for a leak in the cooling system?
Customer: no leaks
JA: Are you fixing your Equinox yourself? What have you tried so far?
Customer: removed water pump looks fine removed thermostat cecked radiator flow
JA: Anything else you want the mechanic to know before I connect you?
Customer: no ehxaust smoke or coolant smell
Submitted: 3 months ago.Category: Chevy
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Answered in 8 minutes by:
7/27/2017
Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago
Ricardo Hohl
Ricardo Hohl, Master Certified Tech
Category: Chevy
Satisfied Customers: 4,304
Experience: Automotive instructor at Porter and Chester institute
Verified

Hi welcome to just answers my name is Ricardo. is the engine loosing coolant? is the engine light on and indicating 02 sensors lean?

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Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

does the heater works fine the moment when its overheating?

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Customer reply replied 3 months ago
no leaks no engine light no codes
Customer reply replied 3 months ago
no heat at all
Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

ok give me a minute

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Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

how meany miles are on this vehicle?

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Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

does the coolant bottle boils over?

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Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

sorry for all the questioning but i just want to make sure we get the right symptoms for the fix .

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Customer reply replied 3 months ago
158k boils over
Chevy Mechanic: Ricardo Hohl, Master Certified Tech replied 3 months ago

we may be looking at a head gasket problem here lest hope not. First we need to eliminate a couple of maybe's. bypass the heater core with a flush tee and retest there has been reports of heater core clogged causing circulation problems.
If now OK, try back flushing the heater core.
Confirm the cooling fan comes on high speed before the coolant boils.
Confirm good airflow through the radiator.
Confirm the radiator is not restricted.
Confirm the pressure cap holds pressure.
Fully bleed the cooling system.
If the system continues to aerate, suspect a head gasket problem.

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