I have a 88 ford bronco and it only has 7000 miles on the motor. It sat for about three years and then I bought it. It will run fine until it warms up. Then the idle will start to surge and want to die. When I drive it runs great but once and a while when I come to a stop light or have to suddenly stop, it will die. If any one has any ideas it would be very appreciated. I just purchased a idle bypass switch and am getting ready to install it. Help will be great, and thanks.