89 5.0 ive just did t-5 swap and wire the nerual safftey switch in on the trans so i have to have it in nerual to start it with it not wired it will not start with the key it still has the aod pcm in it the engine is a 306 w/e303 explore intake 70mm tb 24lbs injectors and pro-m mass it runs fine didnt have this code until i unplug the mass air to repair a coolant leak in the heater tube the car ran fine for a week did try o.e mass and the same thing clear the code it comes right back i due see the brake light is very dimly on in the dash tested for power and ground @ mass air thats good other codes i pulled are 81,82,85 it does stall out some times when hot it has been doing the stalling thing sense i ve put the engine in