What makes a 2005 Ford Taurus surge at driving speed and stall at idle I have add both new o2 sensors and it is still doing the same thing?

Answer 1

I have the same problem with my 98 Ford Taurus. On very dry days, the problem doesn't occur, but in high humidity the car will stall and not start. I'm looking into, will let you know if I find out anything. In the meantime, are our problems the same? Do you notice an improvement on dry days? Does your car not restart after stalling? Does the tachometer surge while the car is bucking and misfiring? Is you check engine light on all the time, intermittent, always off? Last thing is, I doubt the 02 sensors would affect driveability. You might fail your emissions test (if your state has one) but the car should not stall due to failure of one or more 02 sensors. I'm thinking a vacuum leak might be the cause.