The TBI 350 in my 88 Jimmy lost its mind. It was fine on the drive to work but when I went to head for home she is acting up. The idle is at like 2,000 and wont come down and she has a miss. The Plugs,wires,cap,rotor,coil and oil were all done 2 months ago and she has been fine. The check engine light is not on and I made sure the linkage is not stuck. I had to get a ride home as I did not want to risk rear ending some one. Any ideas what could be wrong?