Olfactory Sensations with a Twist

[RVersOnline]

I'm aware of previous discussion threads about holding tank odors, but in our new '07 34' Ltd SE we've experienced something that I've not heard described elsewhere. The coach does not suffer from chronic "odor issues", but there is one circumstance under which we repeatedly find an attack on our olfactory senses -- and that's when we're ascending a long grade. Going down the road is just fine, but when we come to a long uphill pull, such as crossing the Siskiyous or between Bakersfield and Tehachapi, there is a definite message coming likely from the gray holding tank. I've never heard of that odd behavior, and wondered if anyone else had experienced or diagnosed it.

[RVersOnline]

I'm aware of previous discussion threads about holding tank odors, but in our new '07 34' Ltd SE we've experienced something that I've not heard described elsewhere. The coach does not suffer from chronic "odor issues", but there is one circumstance under which we repeatedly find an attack on our olfactory senses -- and that's when we're ascending a long grade. Going down the road is just fine, but when we come to a long uphill pull, such as crossing the Siskiyous or between Bakersfield and Tehachapi, there is a definite message coming likely from the gray holding tank. I've never heard of that odd behavior, and wondered if anyone else had experienced or diagnosed it.

[Dave Fernandez]

Hello & Welcome RVersOnline:

I have had similar experience, I found that sometimes the P trap on a drain will empty from driving and cause a smell from the tanks. Once I put water back down the drain the odor goes away. I also found that the drain on the washer/dryer would also do the same thing, and I sealed the drain hose to the washer/dryer and because of the design the seal eliminated the odors emitting from the washer/dryer p trap, because water remains in the plumping of the washer/dryer.

[lundy]

When you find the culprit and locate the cause of the odor, please post. My '06 does the same thing; coming down Snoqualmie Pass. Yes, it is one to contend with!!!!

[RVersOnline]

We certainly will post any "solution" when we find it. However it's curious that you're getting the downhill sensation, while we're getting the uphill sequel. Maybe that's a hint! Or maybe we should just stay on the flat lands...