my car keeps cutting out when i brake what could be wrong with it. i have had my battery and alternator tested and they are both fine

fiona, July 2007

yep 100% brake servo look in breakers for one unless you dont mind paying £300 for a new one from main dealer, trust me im going through the same problem now, i had computers plugged in to my ecm and came up o2 sensor voltage high. what meens thr o2 sensor is using more petrol and makes it work harder causing your engine to run like crap, is your engine management light on next to your speedo?

frank, June 2009

try cleaning or replacing the idle control valve

julian, July 2007

your brake servo has gone do your breaks feel spongy? the reason it cuts out is the o2 sensor doesnt work when the servo is faulty so it runs lean and cuts out

chris, July 2007