Saturn Repair: 95 SL2 Intermittent engine dying, throttle position sensor, manifold pressure


Question
The car has 77K miles and other than the item listed below, no other work has been done in the past.
In the last year my saturn has started "dying" especially when highway driving. It will suddenly feel like it has lost power and you need to push the throttle pedal further to keep it going, if you take your foot off the pedal, the engine will slow down and die.  It seems I can make the problem go away and get things back to normal by putting the car in neutral and revving it up (to rev limiter)for 5-10 seconds or putting the transmission into a lower gear and run at high rpm for 5-10 seconds.  I have been able to make the problem appear once in a while by playing with the gas pedal (high throttle for a split second then no throttle/partial throttle) but it doesn't always happen. This problem is happening every couple weeks and does not always happen on freeway driving.
I have replaced the plugs/wires, MPS (manifold pressure sensor) and TPS (throttle position sensor)and nothing has helped. The car has

Thank you for any help in advance.   Jose'

Answer
Jose,
 The only thing that I can recommend to you is to have your fuel pressure tested.  I would bet that your fuel pressure is consistently running between 10-25 PSI.  Your vehicle needs 45-55 PSI to sustain a quality idle.  If your fuel pressure is too low, I would bet that you need a new fuel pump.  Hope this helps.

Chris