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 Post subject: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 3:13 pm 
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OK, I started up my car and started driving and about 3 miles of driving my heat went up to almost full temp, just like normal. So, I turned on the heat and this very strong smell of antifreeze came out of the vents. I could see something that looked like steam coming out too. It instantly fogged my whole windshield and i had to pull over. I checked everything under the hood, nothing out of the ordinary. I have a feeling it may be a Heater core gone bad.
Any Ideas???

Please help as much as possible, I need to get my car fixed.

Any info would be greatly appreciated.

Thanks,
EAGLE01 :JEEPIN:

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 3:17 pm 
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sounds like a heater core from what you've posted

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 3:27 pm 
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tommudd wrote:
sounds like a heater core from what you've posted


Thanks,

Do you know if the heater core is under the passenger dashboard?
and do you have any additional info about changing or fixing it?

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..==oooo
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()_).....()_)-o-)_)..
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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 3:28 pm 
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tommudd wrote:
sounds like a heater core from what you've posted


Thanks,

Do you know if the heater core is under the passenger dashboard?
and do you have any additional info about changing or fixing it?

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Many future Mods to come...

..==oooo
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[==[ ]--|ollllllo|
()_).....()_)-o-)_)..
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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 4:17 pm 
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My :2cents: Fold up an old towel and place it in your passenger floorboard kinda up towards the underside of the dash to catch the leaky coolant until you get it figured out. Also, watch your coolant level close. They usually just seep or drip, but you never know...

You could have a loose or leaky hose or something... But it's prolly a heater core. I've had 3 go bad in other vehicles over the years and my daughter lost hers in her Nissan 4x4 truck. I have no experience on the Libby's heater core. I did one on a truck I had and it was a pig to get to. I did another on a Trans Am and had to pull out the inner fender. But, the one in the Nissan wasn't too bad.


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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 4:37 pm 
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Yes. Probably a heater core. Not sure where it is, but I assume under the passenger side dash. That is the typical location. Once you find it, it is very easy to change. Just one inlet and one outlet hose.

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 9:09 pm 
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Quote:
HVAC HOUSING
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM
CAPACITOR TO DISCHARGE BEFORE PERFORMING
FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN AN ACCIDENTAL
AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The HVAC housing must be removed from
the vehicle and the two halves of the housing separated
for service access of the heater core, evaporator
coil, blend door, and each of the various
mode doors.
(1) Disconnect and isolate the negative battery
cable.
(2) Remove the instrument panel from the vehicle
(Refer to 23 - BODY/INSTRUMENT PANEL -
REMOVAL).
(3) If the vehicle is not equipped with air conditioning,
go to Step 9. If the vehicle is equipped with
air conditioning, recover the refrigerant from the
refrigerant system (Refer to 24 - HEATING & AIR
CONDITIONING/PLUMBING - STANDARD PROCEDURE
- REFRIGERANT RECOVERY)
(4) Remove the accumulator and mounting bracket
from the mounting studs on the dash panel.
(5) Remove the nuts that secure the suction line
and liquid line fittings to the evaporator tapping
block (Fig. 7).
(6) Disconnect the suction line and liquid line fittings
from the evaporator tapping block.
(7) Remove the seals from the suction line and liquid
line fittings and discard.
( 8 ) Install plugs in, or tape over the opened suction
line and liquid line fittings and both evaporator
tapping block ports.
(9) Drain the engine cooling system (Refer to 7 -
COOLING - STANDARD PROCEDURE).
(10) Disconnect the heater hoses from the heater
core tubes. Install plugs in, or tape over the opened
heater core tubes.
(11) Disconnect the HVAC system vacuum supply
line connector from the engine vacuum harness.
(12) Remove the nuts that secure the HVAC housing
to the dash panel in the engine compartment.
(13) Remove the HVAC housing from inside the
vehicle taking care not to allow any remaining coolant
to drain on the vehicles interior.

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 9:11 pm 
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Quote:
HEATER CORE
DESCRIPTION
The heater core is located in the HVAC housing,
behind the instrument panel. It is a heat exchanger
made of rows of tubes and fins.
OPERATION
Engine coolant is circulated through the heater
hoses and heater core at all times. As the coolant
flows through the heater core, heat removed from the
engine is transferred to the heater core fins and
tubes. Air directed through the heater core picks up
the heat from the heater core fins. The blend door
allows control of the heater output air temperature
by regulating the amount of air that is flowing
through the heater core within the HVAC housing.
The blower motor speed controls the volume of air
flowing through the HVAC housing.
The heater core cannot be repaired and, if faulty or
damaged, it must be replaced.
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS,
DISABLE THE AIRBAG SYSTEM BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE
THE BATTERY NEGATIVE (GROUND) CABLE,
THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM
CAPACITOR TO DISCHARGE BEFORE PERFORMING
FURTHER DIAGNOSIS OR SERVICE. THIS
IS THE ONLY SURE WAY TO DISABLE THE AIRBAG
SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS
COULD RESULT IN ACCIDENTAL AIRBAG
DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Remove the HVAC housing (Refer to 24 -
HEATING & AIR CONDITIONING/DISTRIBUTION/
HVAC HOUSING - REMOVAL).
(2) If equipped, remove the two screws that secure
the heater core in the HVAC housing (Fig. 14).
(3) Gently push back on the two heater core
retaining tabs and remove the heater core from the
HVAC housing.
INSTALLATION
(1) Position the heater core into the HVAC housing.
(2) Push the top of the heater core down until the
retaining tabs lock the heater core into place.
(3) If equipped, install the two screws that secure
the heater core to the HVAC housing. Tighten the
screws to 2.2 N·m (20 in. lbs.).
(4) Install the HVAC housing (Refer to 24 - HEATING
& AIR CONDITIONING/DISTRIBUTION/HVAC
HOUSING - INSTALLATION).

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sun Jan 10, 2010 9:15 pm 
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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Fri Feb 19, 2010 11:28 pm 
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any update on this? did you get the heater core out? seems like it is not really a driveway job.

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sat Feb 20, 2010 12:20 am 
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Correct me if I’m wrong, but doesn’t heater cores go bad due to poor maintenance? I’ve read that antifreeze becomes more acidic as it breaks down. The acid then corrodes your copper and aluminum parts from the inside out.

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sat Feb 20, 2010 12:40 am 
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Thats a crazy place to mount the heater core seems like a lot of work to get it out. Heater core went out on my sons truck in dec and had it changed out in a couple of hours.

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 Post subject: Re: AntiFreeze odor coming out of heat vents...HELP PLEASE
PostPosted: Sat Feb 20, 2010 2:59 am 
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sounds like it's in a similar place as is in the grand cherokees of similar year models

it's enough to make you cuss in the presence of a minister

core on my trans-am took all of 15 minutes to R&R, we aren't so lucky these days.. with ANY vehicle i fear

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