Oldsmobile/Buick Repair: 1994 oldsmobile 88 royale, oldsmobile 88, pressure oxygen


Question
I Got this car about 3 weeks ago. When I first got it the first week she ran grate. Then it startted spitting and spuddering like it was running out of gas.AND DIEING OUT. I had a fule fitter, fuel pump,fuel regalator, TPS put on it but it still dose the same. A Few days ago she ran good  but now wright back to the same thing again.please tell me what you think could be wrong. thank you .

Answer
Hi Cherie,
The first thing I would do is get a clean glass jar, and disconnect the fuel filter, and catch a jar full of gas. let it sit a few minutes, and see if it has water settling to the bottom.
After that, I would check the fuel pressure.

Oxygen sensor is a possibility.

Does it run noticably better or worse when it is cold, or operating temperature?