Hi everyone. Long time lurker but first time poster here. I have a 2003 mustang gt that is having some fuel pressure issues. It's taking longer to start, but it has started every time I try it. Sometimes the car will die immediately after cranking, but it will start right back up. Occasionally it will act like its going to stall when im sitting at idle, but the rpms usually go back to normal after a few seconds. The car also feels a bit weaker when accelerating.
The computer is throwing the p0190 code. Based on suggestions through some older posts, I have verified that there is not a vacuum leak, and the voltage at the fuel pressure sensor and fuel pump is good. The fuel filter was replaced about 4 months ago.
When I check the pressure at the rails, it stays at 0 when the car is turned on without cranking it. When the car is cranked, the pressure goes to about 40, then drops to 29 and stays there. When I turn off the car the pressure drops to zero immediately.
I knew absolutely nothing about cars before I purchased this mustang a few years ago, but I am learning as I go. Since the pressure drops so quickly I am thinking either a failing fuel pump, or failing injectors. Am I in the right ballpark? If not, does anyone have any suggestions? If I am in the right direction, is there a way to rule one out? Funds are limited so if possible, I would like to not replace anything that is still working fine. Thanks in advance.
The computer is throwing the p0190 code. Based on suggestions through some older posts, I have verified that there is not a vacuum leak, and the voltage at the fuel pressure sensor and fuel pump is good. The fuel filter was replaced about 4 months ago.
When I check the pressure at the rails, it stays at 0 when the car is turned on without cranking it. When the car is cranked, the pressure goes to about 40, then drops to 29 and stays there. When I turn off the car the pressure drops to zero immediately.
I knew absolutely nothing about cars before I purchased this mustang a few years ago, but I am learning as I go. Since the pressure drops so quickly I am thinking either a failing fuel pump, or failing injectors. Am I in the right ballpark? If not, does anyone have any suggestions? If I am in the right direction, is there a way to rule one out? Funds are limited so if possible, I would like to not replace anything that is still working fine. Thanks in advance.