i swapped out my old harness because it was old, brittle, and throwing check engine lights. i have a 51, 35, and 24 i believe. does anyone know what could be causing these check engine lights? im trying to sell the car but i cant sell a not running car. the car starts up, idle's horribly, and then shuts off after a few sconds. if i try and give it gas, it just shuts off instantly. its acting like a boost leak, but i did a leak test with air and no leaks. i am hoping its one of the two EFI switches. but i also have a hunch it might be the air flow meter. the car is an 89 5speed turbo. please, any help would be great.