Can not get fuel pressure no more than 32psi should be 43 psi whit key on

23 psi is no where near enough to run let alone get past the regulator so no gas will return to the tank. Need 40 to 50 psi to run. So either you have a fuel leak could be in the tank or a line. Or the pump is junk

You should have a test port on the Fuel Supply rail, use a tool from a local auto parts "Tool Loaner program" where you can borrow tools for free,w/a deposit of course,then follow the steps provided;

MPI Fuel System Pressure Test

The MPI fuel system used in vehicles equipped with a 4.OL engine employs a vacuum balanced pressure regulator. Fuel pressure should be approximately 55-69 kPa (8-10 psi) lower with the vacuum line attached to the regulator than with the vacuum line disconnected. System fuel should be 214 kPa (31 psi) with the vacuum line connected to the regulator and 269 kPa (39 psi) with the vacuum line disconnected. CAUTION: Some fuel may be discharged when connecting fuel gauge to fuel rail.

1. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to test port pressure fitting on fuel rail (Fig. 7).
2. Remove vacuum line from pressure regulator.
3. Start the vehicle.
4. Note gauge reading. With vacuum line disconnected, fuel pressure should be approximately 269 kPa (39 psi).
5. Connect vacuum line to pressure regulator. Note gauge reading. Fuel pressure should be approximately 214 kPa (31 psi).
6. If fuel pressure is not approximately 55-69 kPa (8-10 psi) higher with vacuum line removed from regulator, inspect pressure regulator vacuum line for leaks, kinks or blockage. CAUTION: Fuel pressure will rise to as much as 655 kPa (95 psi) when the fuel return tine is pinched shut, shut engine down immediately after pinching oft fuel return line.
7. If fuel pressure is low, momentarily pinch shut the hose section of the fuel return line. If fuel pressure remains low, inspect the fuel supply line, fuel filter, and fuel rail inlet for blockage. If fuel pressure rises replace fuel pressure regulator.
8. If fuel pressure is above specifications, inspect the fuel return line for kinks and blockage.

Capacity Test

1. Remove the cap from the pressure test port in the fuel rail.
2. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to the pressure fitting on the fuel rail (Fig. 7).
3. Start the vehicle. Pressure should be approxi- mately 214 kPa (31 psi) with the vacuum hose connected to the pressure regulator and 269 kPa (39 psi) with the vacuum hose removed from the pressure regulator.
4. If the pressure is not to specification, check the following before replacing the fuel pressure regulator:

• 4a - Inspect the fuel supply and return lines/hoses for kinks or restricting bends
• 4b - Check the fuel pump flow rate. A good fuel pump will deliver at least 1 liter of fuel per minute with the fuel return line pinched off. If the fuel pump does not pump adequately, then inspect the fuel system for a plugged fuel filter or fuel pump inlet filter (sock). Fuel pump flow rate can be done by connecting one end of an old A/C gauge hose to the fuel test port on the fuel rail and inserting the other end of the hose into a container of at least 1 liter capacity. Run the fuel pump by installing a jumper wire into diagnostic connector terminals D1-5 and D1-6. Be sure to pinch off the fuel return line or most of the fuel will be returned to the fuel tank.

If you did not replace the filter with the pump the filter could be blocked. Or something in the fuel line to the engine. You might check the pressure regulator too.

Hi.

Check the fuel filter and fuel pressure regulator. They are part of the same assembly and are located on top of the fuel pump. To replace the regulator # Disconnect fuel supply line at the Filter/Regulator nipple and releas locking spring tab (2 in diag.) on the regulator, then turn counterclockwise and pull out. To test regulator use a gauge like this in fuel lines:Pump Pressure Tester.
Pressure in 2003 should be 58psi (48 in 2001 engines). Pressure will drop of about ten psi when you start engine.

There is also an automatic shut down relay ASR. If problem is the ASR the pressure will go down when the relay cuts off power to pump. Read voltages and see if the problem is electrical first before going for the regulator.

First check your fuel pressure regulator by pulling the vacuum line off and check for fuel there should not be any.Then start the car and with a pressure gauge hooked up to fuel rail pull the vacuum line off the pressure should rise 5-10 psi if it does'nt replace regulator.Next check the fuel pressure it should be 41-47 with key on and engine off if not within specs replace fuel pump.

Well, the fuel pump relay may not be getting electricity to the fuel pump.

Also, use the following procedure to test the fuel pump before changing it again:

TESTING Fig. 1: Connect the fuel pressure gauge C4799B or equivalent to the fuel rail service valve - 3.3L shown
Fig. 2: Checking the fuel pressure with a gauge - 3.5L shown
Fig. 3: Checking the pressure between the pump and the filter
Fig. 4: Place the other end of the adapter 6668 into an approved gasoline container

1. Release the fuel system pressure as described in earlier in this section.
2. Remove the protective cover from the service valve on the fuel rail.
3. Connect fuel pressure gauge C-4799B or equivalent to the fuel rail service valve.
4. Place the ignition key in the ON position. Using the DRB III tester or equivalent, access the ASD fuel system test. (The ASD fuel system test will activate the fuel pump and pressurize the system.)
5. If the gauge reading equals the specifications, then further testing is not required. Without vacuum applied to the regulator, the 3.3L engine fuel system operates at 55 psi (379 kPa). With the engine idling and the manifold vacuum applied to the regulator, the system operates at approximately 46 psi (317 kPa). Without vacuum applied to the regulator, the 3.5L engine fuel system operates at 48 psi (331 kPa). With the engine idling and the manifold vacuum applied to the regulator, the system operates at approximately 39 psi (269 kPa). The fuel system pressure varies with the different amounts of manifold vacuum applied to the regulator. If the pressure is not correct, record the pressure and remove the gauge.
6. Ensure that the fuel does not leak from the fuel rail service valve. Install the protective cover onto the fuel rail service valve.
7. If the fuel pressure reading was below the specifications, test the system according to the following procedure:
   1. Perform the fuel pressure release procedure.
   2. Install a fuel gauge C4799 and fuel adapter 6631 or equivalent in the fuel supply line between the tank and the fuel filter.
   3. Using the DRB III scan tool or equivalent, with the ignition key in the ON position, repeat the ASD fuel system test.
8. If the pressure is at least 5 psi (1 kPa) or higher than the reading recorded, replace the fuel filter.
9. If no change is observed, gently squeeze the return hose. If the pressure increases, replace the pressure regulator. If the gauge reading does not change when the return hose is squeezed, the problem is either a plugged inlet strainer or defective fuel pump.
10. If the fuel pressure reading was above the specifications test the system according to the following procedure:
    1. Perform the pressure release procedure.
    2. Install fuel pressure gauge C4799 and adapter 6631 or equivalent in the fuel supply line between the fuel tank and the fuel filter.
    3. Remove the fuel return line hose from the pump at the tank. Connect pressure test adapter 6668 or equivalent to the return line. Place the other end of adapter 6668 into an approved gasoline container. A minimum of 2 gallon tank should be sufficient. All return fuel will flow into the container.
    4. Using the DRB III scan tool or its equivalent, with the ignition key in the ON position, repeat the ASD fuel system test.
11. If the pressure is now correct, replace the fuel pump.
12. If the pressure is still above specifications, remove the fuel return hose from the chassis fuel tubes (at the engine) and attach fuel pressure test adapter 6668 or equivalent to the return tube. Place the other end of the hose in the clean container, repeat the test. If the pressure is now correct, check for a restricted fuel return line. If there is no change observed, replace the fuel pressure regulator.

The in-tank fuel pump module contains the fuel pump and pressure regulator which adjusts fuel system pressure to approximately 49 psi. (338kPa). Voltage to the fuel pump is supplied through the fuel pump relay.
The fuel pump is serviced as part of the fuel pump module. The fuel pump module is installed in the top of the fuel tank and contains the electric fuel pump, fuel pump reservoir, inlet strainer, fuel gauge sending unit, fuel supply line and pressure regulator. The inlet strainer, fuel pressure regulator and level sensor are the only serviceable items. If the fuel pump requires service, replace the fuel pump module, using the following procedure:

1. Remove the fuel filler cap and properly relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Remove the fuel tank assembly from the vehicle.
4. Clean the top of the tank to remove any loose dirt.
5. Using special tool No. 6856 or equivalent, remove the fuel pump locknut by turning it counterclockwise.
6. 1. Remove the fuel pump and O-ring from the tank. Discard the O-ring.
   
   To install:
   
7. Thoroughly clean all parts. Wipe the seal area of the tank clean. Place a new O-ring in position on the pump module.
8. While holding the fuel pump module in place install the locking ring and tighten to 43 ft. lbs. (58 Nm) using special tool No. 6856 or equivalent spanner-type tool.
9. Install the fuel tank assembly.
10. Reconnect the negative battery cable.
11. Fill the fuel tank with fuel. Install the fuel filler cap. Turn the ignition switch to the ON position to pressurize the system. Check the fuel system for leaks.

Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

Sounds as though it may be your fuel pressure regulator. Easy fix and you can troubleshoot it easily also. Check the fuel pressure first. This is your part....


Fig. 13: Compression gauge and a combination vacuum/fuel pressure test gauge


TESTING Except Premier and Monaco NOTE: To perform this test, you will need a pressure gauge capable of reading pressures above 55 psi (379 kPa). The gauge must have a connection that will fit the fuel rail service valve. The gauge must be the equivalent of Chrysler pressure gauge No. C-4799 and the connector fitting compatible with pressure test adapter 6539. You may also need a T and the fittings necessary to connect the gauge into the fuel supply line at the tank, as well as a 2 gallon container suitable for collecting fuel.

1. Release the fuel system pressure as described in Section 1.
2. Disconnect and plug the vacuum line going to the fuel pressure regulator.
3. Remove fuel hose quick connector from the chassis line.
4. Install the adapter between the fuel supply hose and chassis fuel line assembly for the 3.0L engines or into the service port of the fuel rail for 3.3L and 3.8L engines.
5. Hold the gauge and have someone start the engine. Run the engine at idle speed in Neutral (manual transaxles) or Park (automatic transaxles). CAUTION
   Exercise extreme caution while under the hood with the engine running. Keep clear of all moving belts, fans, exhaust manifolds, etc.
   
6. Read the pressure. It should be 48 psi (330 kPa). If it is outside the range, take note of it.
7. Stop the engine.
8. Once again depressurize the system, disconnect the gauge and replace the protective cover.
9. If the pressure was correct, the test is complete. If the pressure is below the range, proceed with the next step; if it is too high, skip to Step 13. WARNING
   In the next step, note that fuel may drain from the lines as you disconnect them. Make sure all surrounding exhaust system parts are cool and that all sources of ignition are removed from the area. Collect fuel and dispose of it safely.
   
10. Connect the gauge into the fuel supply line running between the tank and the filter which is located at the rear of the vehicle. WARNING
    Make sure all connections are secure.
    
11. Have an assistant start the engine, then read the pressure gauge. If the pressure has risen more than 5 psi (35 kPa), replace the filter. If the pressure is now within range, allow the engine to cool and remove all sources of ignition; depressurize the system; disconnect the gauge from the lines; replace the fuel filter; and restore all connections.
12. If the pressure is still too low, gently and gradually pinch the fuel return line closed as you watch the gauge. If the pressure increases, the fuel pressure regulator is at fault. If there is no change, the problem is either clogging of the filter sock mounted on the pump or a defective pump itself.
13. If the pressure is too high, follow this procedure:
    1. Shut off the engine and allow it to cool.
    2. Depressurize the fuel system, then disconnect the fuel return hose at the chassis, near the fuel tank.
    3. Connect a 3 ft. (91cm) length of hose to the open end of the line running along the chassis. Position the open end of the line into a container suitable for collecting fuel.
    4. Have a helper start the engine, then check the pressure again. If it is now correct, check the in-tank fuel return hose for kinking.
    5. If the in-tank fuel return hose is okay, and the system still exhibits excessive pressure with the tank half full or more, the fuel pump reservoir check valve or aspirator jet may be obstructed and the assembly must be replaced.
14. If the pressure is still too high, perform the following:
    1. Shut the engine OFF, and allow it to cool.
    2. Depressurize the system once again and reconnect the fuel lines at the rear.
    3. Disconnect the fuel return hose at the pressure regulator. Collect all fuel that drains.
    4. Run the open connection into a large metal container.
    5. Reconnect the fuel gauge to the fuel rail.
    6. Start the engine and repeat the test. If the fuel pressure is now correct, clean a clogged return line or replace pinched or kinked sections of the return line. If no such problems exist, replace the fuel pressure regulator.

Premier and Monaco CAUTION
Wear eye protection when servicing the fuel system. Do not smoke or allow open flame near fuel system components during fuel system service.

1. Remove the fuel tank filler cap to relieve the fuel tank pressure. NOTE: System fuel pressure will be released when disconnecting the fuel supply tube. Have shop towels handy to absorb spilled fuel.
   
2. Use the quick disconnect tool 6182, or equivalent, to remove the black fuel supply tube from the fuel rail. Slide the tool over the nipple and up into the connector until the handle fits the connector. Pull the fuel supply tube off the fuel rail.
3. Install the fuel tube pressure adapter tool 6175, or equivalent.
4. Push the female end with the quick-connect fitting over the fuel rail until a click is heard. Pull the connector back to ensure that it is locked in place.
5. Push the male end with the nipple into the black fuel supply tube until a click is heard. Pull the nipple back to ensure that it is locked in place.
6. Attach a 0–60 psi (0–415 kPa) gauge from the fuel pressure test kit 5069, or equivalent, to the port on the fuel tube pressure adapter tool.
7. Start the engine and check the fuel pressure. It should be 28–30 psi (193–207 kPa) for early models and 43 psi (300 kPa) for late models. The fuel pressure regulator on these vehicles is non-adjustable.
8. If the fuel pressure is low, check for fuel flow through the return tube.
   1. If fuel is returning to the fuel tank through the fuel return tube, replace the fuel pressure regulator with a new one.
   2. If the fuel is not returning to the fuel tank or just trickling out, inspect for a faulty fuel pump, possible clogged fuel filter or other restriction between the fuel pressure regulator and the fuel pump.
9. If the fuel pressure is high, check the pressure regulator vacuum hose for leaks, and for a kink or restriction in the fuel return hose. If the pressure regulator vacuum hose is not leaking, the return tube is not kinked and does not have a restriction, the fuel pressure regulator should be replaced with a new one.
10. Remove the pressure gauge.
11. Disconnect the fuel tube pressure adapter tool with the quick disconnect tool.
12. Prior to installing the fuel tubes to the regulator and fuel rail the tube ends must be lightly lubricated with clean SAE 30 weight engine oil. Refer to the procedures describing the removal and installation of the fuel tubes.
13. Install the black fuel supply tube to the fuel rail and the gray fuel return tube to the pressure regulator.
14. Install the fuel tank filler cap.
15. Start the vehicle and check for fuel leaks. NOTE: When starting the engine, allow extra time for the system to pressurize itself.
    

fuel pump check valve doesn't cause pressure loss, just hard starting cold, the check valve is part of the fuel pump, so to replace the valve u must replace the pump. do not use anything but the orig style pump, here is the part number from THE OE PUMP MAKER AT www.rockauto.com
DELPHI Part # FE0071 PRICE $124.99

Your choises are...bad fuel pump, restricted fuel filter (new?) bad fuel pressure regulator...out of gas....can you pinch off the return fuel line to the tank? some are rubber and some are hard plastic...dont pinch the plastic. This will give you the unregulated pump pressure. If it doesn't go up you have a bad pump or it's drawing air from the tank (pick up restricted/fell off or no fuel) if pressure goes way up and runs good your regulator is bad