Ashfaaz

I have (ALTEZZA import) lexus is200 year 1999 miles around 51000 mark just few days I've had something gone wrong which is difficult to understand. Driving coming towards traffic light slowing down just then the car started to shake and cuts. No engine management light come on I started the car which started first time then again slows down car does the some thing again shakes and cuts off. I've done full service but still the some when engine cold it's ok but I noticed revs shots...