Without seeing your car... possibly burnt off the serpentine fan belt due to a seized alternator that was not charging. See if the alternator spins over by hand; that could be the problem. I you. Mark
The belt is burning up and wind is pushing the smell through the air conditioning.
Probaably whatever is burning is not being blown away because your going slower. That is when your moving more air is pushing the odor away. Are you hearing any new noises? In a manual car it will probably be the clutch if you are riding it alot automatics don't make the smell unless ya are doing burnouts. Burning clutch smells a bit more metallic than rubber. I had the same occurence for a few months when getting out of my truck, was told it might be a plastic bag stuck on underside, but it was the tires being slightly underinflated, bad alignment plus my aggressive driving back then. I had this problem and it was a leaky valve cover gasket. oil was leaking on to the rest of the engine and the burning rubber smell was the smell the synthetic oil gave off. I had this problem too, but with me it turned out to be my surpentine belt burning as a result of my A/C Clutch was starting to lock up. Check your belt / belts for any discoloration. This would be a sign of it / them burning. And if it does end up being a belt, it could be anything with a pully being used by that belt that could be causing the problem. Incorrectly routed, adjusted(tensioned), missing or worn drive belt(s); Incorrect belt tension will allow belts to slip; Loose or damaged belt tensioner will allow belts to slip; Worn or damaged idler/tensioner pulley; Spark plug or coil wire(s) making contact with hot engine; Corroded, broken or poorly connected battery cable. bad fan belt or in correct tension on fan belt especially noticable if you are using a/c in stop and go traffic
Often the smell of burning rubber is an electrical wire that is overheating and causing the plastic sheathing to melt and burn. Sometimes there can be enough resistance to heat a wire but not cause the metal to melt, just the plastic. Trace out with eyesight and your nose, to find the area and possibly the faulty wire. If not findable, pass what you could discover onto someone that is able to look further into this matter.
It could be electical like a fuse, but I had a problem on my 2000 Astro that was caused by a rubber vaccuum line that was split. I replaced it for about 2 bucks and it corrected the problem. Hope this helps
exhaust leak driveshaft center bearing mudflap/fender skirt rubbing tire engine mount
Possibly a problem with one of your belts?
because the fan belt is burning
Burning Rubber was created in 1981.
The duration of Burning Rubber is 1.42 hours.
A car heater that smells like burning rubber could be an indication of a belt that is slipping. The slipping belt smell can be drawn in from the engine compartment into the passenger cabin.
burning rubber
build up or clucth
Burning rubber creates Friction because friction creates heat and burning is heat
The engine mount (which are made of rubber) are worn out.
The first and easiest answer that comes to mind is that there is a problem with the cabin air circulating fan. BUT - - there is not really enuf specific information. Are you sure it is a burning RUBBER smell, or a burning PLASTIC smell, or a burning ELECTRICAL smell? All could point to different problems.
no
The burning rubber smell in the tranmisson breaking apart inside.