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2003 awd astro van i smell antifreeze I recently changed…

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2003 awd astro van i...
2003 awd astro van i smell antifreeze I recently changed thermostat and it worked fine but now today im smelling antifreeze and it overheating butbil able to keep itvcool by turning on heater, i also checked for leaks underneath hood and car but don’t see any but i can definitely smell antifreeze what esle should i check for? What can be the likely causes
Submitted: 30 days ago.Category: Chevy
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3/23/2018
Chevy Mechanic: Gary, Chevy Technician replied 30 days ago
Gary
Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 17,787
Experience: 15 years GM master tech
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Welcome! My name is ***** ***** I will do my best to assist you with this problem.Ask me about added features such as phone contact anytime if you wish !

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Chevy Mechanic: Gary, Chevy Technician replied 30 days ago

when it overheats is the coolant low ? then you fill it up and its fine for a while ?

is the radiator going down on coolant ?

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Customer reply replied 29 days ago
I don’t know yet ill need to check coolant level
Chevy Mechanic: Gary, Chevy Technician replied 29 days ago

see if you fill up the coolant if it stops overheating

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Chevy Mechanic: Gary, Chevy Technician replied 27 days ago

how are you making out ?

if you have any questions please ask

please do not forget to rate me here at Justanswer

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Customer reply replied 25 days ago
Ok coolant is not low ,upper radiator hose feeding thermostat is pretty hot so im assuming thermostat may be stuck in closed position hence overheating running to hot ? What else can be a likely cause of engine running hotter then should be?
Chevy Mechanic: Gary, Chevy Technician replied 25 days ago

usually thermostats or water pumps on these engines and a few with bad clutch fans

if you have any questions please askplease do not forget to rate me here at Justanswer
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Customer reply replied 25 days ago
How do i check both water pump & clutcg fan for issues & malfunctions?
Customer reply replied 25 days ago
Also if im right & thermostat is in fact stuck closed, can this trigger an antifreeze smell somehow?
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago
david craig
david craig, Auto Mechanic
Category: Chevy
Satisfied Customers: 5,153
Experience: owner/mechanic at 3D Automotive
Verified

if the upper and lower radiator hoses are both very hot, the thermostat is not stuck

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Customer reply replied 25 days ago
Ok so ....?
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

are both hoses equally hot?

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Customer reply replied 25 days ago
What gives how can van overheat if collant going through engine
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

please answer my question

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Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

are both hoses equally hot?

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Customer reply replied 25 days ago
Gotta get back to you only checked upoer now im on hwy again
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

ok. let me know

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Customer reply replied 25 days ago
Air coming out of heater vents cold , both hoses feel about the same hot ness
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

both radiator hoses?

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Customer reply replied 25 days ago
Top right bottom left they bith feel about same temperature also sometimes the temp
Will be uo then itll go down , just happened while idling so im guessing thermostat opened which caused temp to
Drop but what i dont understand is why does it run hot even with heater on while driving on hwy and why is the air coming out cold ? Heater core problem?
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

the hoses should be barely able to be touched.

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Customer reply replied 25 days ago
if they not hot enough?
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

you have air pockets throughout the cooling system

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Customer reply replied 25 days ago
how can i fix this and again can this cause an antifreeze smell in car
Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

yes it will cause the smell if its over heating

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Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

you have to bleed the system and get all the air out

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Chevy Mechanic: david craig, Auto Mechanic replied 25 days ago

running the engine with the cap off, squeeze the hoses by hand until no more air bubbles come out the top. it may take quite a few times. keep the radiator full while doing this

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Customer reply replied 25 days ago
How do i bleed system and again hot air blowing out mixed hot cold what controls & causes that vacuum lines being kinked or the actial puece that the flap is on not working properly
Customer reply replied 25 days ago
38; can cooling system somehow have gotten over filled with coolant causing it to overheat thanks to too much coolant causing it to not have any room to flow ? Is this possible? Im not a mechanic by career but i was highly knowledged in repairing cars thanks to me being highly mechanically inclined and having bought a professional lift to maintain fleet of 5 vans thanks to mechanics being iver expensive and not good or thorough but now im rusty thanks to a coma i was in and not fixing cars for a long while
Customer reply replied 25 days ago
Overheating running hot rather while on hwy almost at 260 degrees i dont get it maybe at my next stop I’ll remove thermostat real quick see if this helps
Chevy Mechanic: Todd Audette, Chevy Technician replied 25 days ago
Todd Audette
Todd Audette, Chevy Technician
Category: Chevy
Satisfied Customers: 419
Experience: Chevrolet Technician
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Hi my name is ***** ***** I will be assisting you with your question today. After reviewing the previous conversation, what i believe is going on is that you have a partially blocked radiator. This will prevent the cooling system to flow correctly giving you the high temp reading. You may also have a blocked heater core which is why you don't have heat

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Todd Audette
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