Leaking heater core

[decoupe]

I have some seepage from the heater core that produces a slight (but noticeable) odor and fog on the windshield in cold weather. I've bypassed the heater for now - amazing how much heat is produced in the off position.

Before I dive in, is it possible to remove the heater to repair the core from the front by removing the whole console, gauges and glove box?

Are there any additives I can add to the antifreeze that will stop small leaks (that I won't regret) that anyone has tried? Had to ask that one.

Thanks,
Doug

 

[vraned]

To remove the heater box, the center console must be removed. The heater control console and heater box itself should be removed as a unit. Don't undo any control cables until after removing the whole. 2 bolts on each side of the heater console hold it to the underside of the parcel shelf. 4 nuts hold the heater box to the underside of the cowl pan. A lot of stuff stands between you and those 8 fasteners: console side panels, glove box, steering column lower cover, hoses, air ducts, wiring, etc. Some reference photos:http://www.vranedom.com/heaterbox/heaterbox.html

 

[decoupe]

Thanks for the insights and photos which will be a great help. I'm happy not to remove the dash as part of this process.

 

[Tyler]

Slight change of topic, but I've also noticed how much heat comes through when the heater is off. Has anyone installed a manual in-line cut off before the heater core? This would keep the hot water out of the core for summer use.