I Have a 99 Camaro with 164k miles. The serv eng light has come on. I noticed that when I started up a incline it would miss slightly and the light would then start blinking. I also noticed the A/C would shift to the floor vent. It was still blowing but blowing down toward the floor. Once I leveled off and cruised at about 65 mph, the engine ran smooth, the light stayed on but stopped blinking, the A/C returned to the upper vents like normal. Any thoughts? I thought it may have to do with a vacuum leak being the A/C was effected in this strange way. Have not had the car long and have been a Ford man for many years. Would welcome all comments

David

3.8 V-6

 

First thing you need to do is take it somewhere like autozone and get the codes read so you know what your dealing with. I think the blinking light is not good. I see this thread is a bit old so hopefully youve already gotton it looked at.