Weird smell in compartment on Coach

[lorenz]

We have a 2015 Thor Motor Coach 36mq. We came to Arizona in November, 2014 and have been living in a Park Model. I have the Coach in storage that I go to every 3 weeks to run the engine, generator, air conditioners, lights, and anything else that I can think of. I have already taken the Coach to Cummings and got the recall fixed. When I did, I took it back to storage and smelled a weird smell back by the tires. I thought it was something rubbing on the tires and found nothing. The next time I went out to run the Coach, after about an hour, I checked on the smell and it was not the tires but I opened up the last compartment on the door side and the smell was stronger. After I shut off the engine, I started to check all of the wiring but have not found anything. I did notice that the fan in the left side of the compartment was not running when the engine was on. I have given up trying to find it , does anyone have any ideas to check for?

Thanks

Fritz

[Beacher]

First, check for "low hanging fruit". I'd check for obvious wires or hoses from the exhaust manifold all the way back to the tail pipe. It really could be anything from a sensor wire to a hose.


However, you mention that your coach is a brand new 2015 model. A certain "break in period" smell is not uncommon. Many of the components in the engine have never seen temperatures of an operating coach for more than factory testing. There will be outgassing of insulation panels and it's adhesive. All the rubber hoses and silicone wires will produce a smell. All the sealants and gaskets used during the assembly of the engine will also outgass and smell for a while.