coolant smell in cabin

[col123]

hi all,
        every now and then i get a strong burnt coolant smell in the car,usually when in traffic or when stopped at traffic lights etc...no loss of coolant no leaks etc..changed thermostat ...only happens occassionally but really annoying...any ideas???
                                      regards col

[Horizon]

Is there any loss of coolant?
Is the temperature gauge reading high?
There maybe a small weep from a hose onto  a hot exhaust .
I had an escort many years ago that used to have a foul smell every time I turned the cooling fan on, third was a smell of burnt coolant. It turned out to be a slight weep on the heater matrix, it would put me off using the heater it got that bad.
Hope you get to the bottom of this.

[Finglonga]

My 335i use to do exactly the same and never did find the cause of it and the coolant level never budged. Took it to the dealer and the tech said quite allot of them do it and it is nothing to worry about.

[col123]

thanks, mines done it for a year now since i bought it,but only now and again,cant be too drastic as nothings failed yet lol