Cuts Out Stalls

1992 Oldsmobile Cutlass Supreme 135,000 miles 3.1L V6 automatic... For a long time, my sister would drive and it would give out for a second, not stall, when she accelerated but this would not always happen. It became worse and would sometimes stall now after it gave out . What I mean by giving out is that it doesn’t sound or feel like the engine is running for a second and you have to let off the accelerator to let it recoup or if you don’t, it will stall. But like everything else, it doesn’t happen all the time, sometimes if you just floor it and let it roll for a second, it will “catch” and peel out no matter what speed you are going. Also, sometimes when the car starts up, the idle is very high and will stay there and return to this speed every time you come to an idle, other times it is normal from the start. The high idle does not indicate when the stalling happens either, anything will happen when ever it feels like it. It has happened hot and cold, easy driving and hard driving, low speeds and high speeds. Any help would be greatly appreciated, thanks.

Asked by g11sports