W202 cuts out under braking

[cp366kta]

Hi, my 1999 W202 Petrol Auto Elegance has a serious issue.
Sometimes when you touch the brake the engine will cut out and the dash lights flash rapidly about three times.
You have to roll to a stop and then re-start it, which it does without a problem.
We have changed crankshaft sensor, fuel filter and brake light switch to no avail.
Does anyone know what might be causing this? No fault codes are registering.

 

[guydewdney]

i would look at the BAS unit. it adds huge amount of braking in an emergency by dumping the vacuum into the brakes... ina petrol that might cause a stall? the bas system isnt very reliable. its changeable quite easily on the brske vacuum chamber without much removal of stuff, but fiddly.

 

[vijilants]

I have a BAS unit for sale in the classified for sale section for the W202 if you need one.

 

[joesoap]

might also be worth checking if you have a vacuum leak possibly at servo or in inlet pipes/tubes?