Help! my 1995 Buick Regal seems to loose gas pressure. Have had several repairs done, fuel pump, fuel pressure regulator, fuel filter and nothing seems to help. It seems that the repair shops are guessing at the problem. What else could cause this problem? Sometimes it even stalls out completely but usally starts back up. Anyone have any suggestons?
Have someone test the Crankshaft Position Sensor. This sensor informs the computer if the engine is running or not. If this sensor fails the computer thinks the engine is no longer running. The computer then shuts down the fuel and ignition systems because according the computer the engine is no longer running.
Sorry but what problem do you see that leads to the idea of lost gas pressure? There are other issues that cause stalling. Bad temp sensors, Idle air controls, and bad spark are the top on my list. Is there a reason you are concerned about fuel pressure?