hi i just ran a cell check on my 1997 sti and it came up with three faults 1.pressure duty solinoid
2.air flow meter or circit 3.starter switch or circit.... are these major must i not drive the car until these are fixed and is it something i can do myself? the reason i checked was the idle was pulsing and i sometimes get a flat spot when the turbo came in .......any advise much apreciated
Thanks

anyone?