Left work tonight in heavy snow fall. Was in four wheel drive and following some slow pokes, till I could finally pass. I thought the smell was the cars ahead of me. Got to my crash pad, (5th wheel home away from home) and noticed the smell seemed stronger in the cab. Checked under hood and is not from the engine. Cab stinks bad. Any ideas?

 

Possibly flex joints leaking in the y-pipe to the turbo!

Something electrical under the dash?

 

Leaking y pipe? Oh great, just what I needed. Lousy time for that to happen lol. Working as snow plow operator and dealing with a Christmas storm. Not sure when I can deal with repair. Would it be ok to deal with the repai next week and keep using the truck for now? She's all I got right now to get to work and back and the weather outside is frightful.

 

I found my egt sensor had backed out, but it doesn't stink as bad now. Not nearly in fact. I think this may be coincidence and there may have been a skunk seeking refuge from the storm under my truck and starting it scared the critter enough to spray. The smell was too strong to be exhaust and stays in the cab with engine off, but is getting milder with time. I'll clear snow from a spot and reattach the egt probe and see if that makes a significant difference.