2000 Chevy Blazer 4.3 / heater cold - using to much antifreeze

Marvin

• 85242 Answers
• Posted on Dec 17, 2008

SOURCE: Smell coolant when heater is turn on...

the heater core inside the dash is leaking, it may get worse and coolant will start to drip on the floor out of the heating outlet

SOURCE: antifreeze smell and smoke coming out of vents

You have a coolant leak most likely in the heater core. Try disconnecting your heater hoses and coupling them together, then running the engine to see if the leak goes away. If it does, I would have the heater core replaced.

SOURCE: smell antifreeze, no leaks, gurgleing behind drivers side dash.

there is air in system causing gurgling/set heater to defrost and check for sweet smell. do while stopped if core is leaking windshield will fog up and be hard to clear.

SOURCE: wet under driver's side floor mat

Is there a sweet smell inside the car?Heater core leak I beleive would be on passenger side floor.Antifreeze will be sweet to the nose.Are you getting any white smoke out the tailpipe? would likely be head gasket leak.Put a piece of cardboard under the car near the radiator and under the motor to see where its leaking from .One thing Ive learned over the years is that its going somewhere.On the ground? Or out the tailpipe.
As for the floor board leak the 98 s were prone to have the defrost area in front of windshield collect water from being plugged up .Mine was passenger floorboard.Daughter resealed small oval vent (that defrosts /heats hood?) LOL .Its on pass. side under hood on cowl .I think this will take care of my problem but you may need to investigate under the dash/defrost area and drill and then install a drain line to bottom of defroster.Exit drain line to O/Side of car...lol .Also was it raining ? was car outside in rain .if so it could be this issue.Sorry so long ,hope you can make heads or tails of this.

SOURCE: smelling antifreeze inside cab of 2000 gmc jimmy

Chanses are that little hole will turn into a big hole its only a matter of time, its not that hard, don't be inteminated by it, even if you have never done one before. Chk. the carpet on the pasengers side floor see if its wet, anyhow if you can smell antifreeze thats what it is heater core.