Originally Posted by SpectorV
my 01 mustang wouldnt idle when it was cold, i would have to hold the gas petal down a bit so it would stay running.
it was the IAC (idle bypass valve) not sure the 90 has the same thing~ also a good maf cleaning is not a bad idea (cheap to do just use electronic parts cleaner NO residue)
On mine I did the above, sprayed carb cleaner on a rag then wiped inside the TB around the butterfly, then replaced the plugs, cap, and rotor. All fixed