duncan0668

I have noticed that after I park my jeep it leaves a rust stain. I think it comes from the drain tube from the air and heat box. I would like to stop this, any ideas.

xjrev10

need more info. where is the rust stain?

duncan0668

Passenger side firewall, I belive it is comming from the drain tube.

ol"blue

It might be coming from something in the cowl area under the screen below your wipers. Pull that plastic cover off, then check and clean out any junk/residue that always collects in that area. Clean out the drains there too.
It prevents rain from puddling and leaking into the pass. compartment through the heater air intake in the cowl. JMO
Dan

4.3L XJ

If that is where it is coming from it is not rust. More likely it is mold or bacteria that is growing in the condensate pan. You just have to kill it. Easier said than done. You can squirt some bleach up in there or get a tablet from an HVAC company that is made for that task. It is big and will have to be broken up.

G_P

It's probably mud and rotting leaves/debris down in the drain pan. Or it could possibly be a heater core leak that only occours during heat soak after shutdown.

Next time you park it wait until you see the drips then turn the key on without starting the engine and set the fan to high. IF you smell coolant then you have a heater core leak.