Maybe I am crazy..........but I bought this ride 3 months ago and have done a few things to it, 2 inch suspension spacers, 1 1/2 wheel spacers, changed all the fluids, shocks, hoses, belts. Just had the wheels aligned today after a couple of DW episodes.
I ran the last three months with no doors or top and it's a lot like riding a motorcycle, hearing all the noises and smelling all the smells, thinking it might be you. Now I have the full soft top on and the full doors and for the last three days I've been getting "wiffs" of burnt leaves. It was so bad yesterday, 1/2 way home from work, that I damn near pulled over. Today it happened right when I started the engine. It doesn't happen all the time. I ran the heater both mornings and didn't notice it.
Today when I got home I left the engine running and did a "class A" inspection, nothing. I haven't been off road, haven't been through any leaves.
I had the same problem last winter. I replaced the blower motor which smelled like burnt leaves. I also removed a bunch of leaves from the heat exchanger (which can be accessed with the blower motor removed). I had to make a tool that reached all the way into corners to heat exchanger. I had the same problem this year, although the motor and blower are ok, there were a lot of leaves in the heat exchanger. Smell is still present but I just did the repair on Sat and need to run some air freshener through the system. I park under a lot of trees (need the shade in TX) and assume this is the problem. I joined this forum to see if anyone else had an answer other then my assumption. I plan to add a screen under the fresh air intake (under the wiper) to eliminate to leave accumulation.