power loss

I have a '94 ranger 4x4 with the 3.0 V6. Recently I have been having problems with the truck revving up when I went to push the clutch in to shift. I had the idle air control valve replaced and it didnt help. The problem would come and go one week or month it would be fine and then it would come back. The garage where i bought it said that it messing up the idle when I was disconnecting the battery to reset my check oil light that will mysteriously come on. So anyway they reset the idle and it was fine for a week and then it started acting up again. I was about to go get the throttle position sensor replaced when I parked it and when to start it again and it had no juice. This is when I discovered that the ground terminal was loose so I fixed it, let it idle for a while and it wont rev up when I shift, but know it seems to have some power loss. It goes goos up to 45 then it seems to struggle unles your winding right out. Also when I went down the interstate today I finaly got it going good and the gas pedal even felt stiffer and more responsive so I shut it off and went to the bank but when i started it up it ideled wierd. It wouldnt idle down for a while like you were starting it in the cold. Whta could be the deal, Thanks for any help, this is driving me nuts.

I have a '94 ranger 4x4 with the 3.0 V6. Recently I have been having problems with the truck revving up when I went to push the clutch in to shift. I had the idle air control valve replaced and it didnt help. The problem would come and go one week or month it would be fine and then it would come back. The garage where i bought it said that it messing up the idle when I was disconnecting the battery to reset my check oil light that will mysteriously come on. So anyway they reset the idle and it was fine for a week and then it started acting up again. I was about to go get the throttle position sensor replaced when I parked it and when to start it again and it had no juice. This is when I discovered that the ground terminal was loose so I fixed it, let it idle for a while and it wont rev up when I shift, but know it seems to have some power loss. It goes goos up to 45 then it seems to struggle unles your winding right out. Also when I went down the interstate today I finaly got it going good and the gas pedal even felt stiffer and more responsive so I shut it off and went to the bank but when i started it up it ideled wierd. It wouldnt idle down for a while like you were starting it in the cold. Whta could be the deal, Thanks for any help, this is driving me nuts.
This could be your Throttle Position Sensor. Before buying parts, see if your throttle linkage is somehow sticking. Spray it with WD40 and move it back and forth for proper operation. Do this while the truck is running so you can get a good idea of how it sounds and operates. Is it possible that your gas peddle is sticking somehow? Check all of your vacuum lines for leaks.