With the intercooler off and opening the throttle blade manually the blade looks like it opens maybe 1/2 way to a full open position, this is a 87 TC with auto trans., is this normal? my other cars when doing this the blade opens all the way...or pretty close.
Has to be a throttle cable related problem.... Is the pedal maybe getting stopped by the carpet???
Either that; or the cable has stretched over time is a possibility as well. I took the slack out of mine by placing 3 zip ties on the underside of the gas pedal ;)