At times my 1994 Acura Integra produces a smell similar to hot brakes that comes through the ventilation system. The smell does not always occur, but seems to occur the most with the heat on. Brakes are never hot or dragging when this occurs. I can smelll it when I lift the hood, but cannot pinpoint where it is coming from. If I had to say I would say the smell is coming between the firewall and engine, when I look under the hood. The car is an automatic!

Could a bad Cat Converter be the culpret?

 

is ur car leaking oil? mayb some oil is getting on something :dunno:

 

No oil leak anywhere that I can see.

I guess a bad Cat converter would produce more of a sulfer smell not like a hot break or clutch smell, but I am at a loss. The breaks do not smell when the ordor occurs and the car is an automatic; so no hot clutch smell.

I am dumb founded, or just dumb hahahhahahh

 

naw ur not dumb...my car gives off a random sulfur smell while im driving...mayb my cat is out... like urs

 

You say it usually happens when the heat is on? Id start checking for a dirty or leaking heater core.

How is the coolant level?

 

drop some Beano into intake