I have a 97 Jeep Wrangler, 4banger. Recently I got a rear differential changed. Went from an open diff to limited slip (posi) differential.
After I got it done, there has been this weird smell coming when i hit around 45 MPH. when my window is open, it is strong and when its closed it is not at all.
The closest i can relate to that smell is like smell near lot of factories. It is definitely not coolant and most likely not oil.
I got it checked and when hoisted the jeep, there was no oil or any thing falling on the exhaust system. It does not smell when I stop. Tried to smell to the source of the smell but failed.
Also i recently got the idle pulleys (on serpentine belt)changed.
i have no idea where the smell is coming from or what it is..
It is kinda hard to explain what it smells like but i gave the best description i could..
Any help suggestions would be greatly appreciated.