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|Pressure Rating:||51 PSI|
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Q:I have a 2004 trailblazer with the 4.2 that has stalled. I pulled the vacuum hose off of the pressure regulator and turned the key on and gas comes out of vacuum port on top of regulator. That means it's bad, right?
A:Yes, Bigb 74! The fuel pressure regulator may just be starting to go bad, if the engine stalls when you press down on the gas pedal, there shouldn't be any hesitation when you press on the gas, even if you only notice a little hesitation. However, without the presence of your vehicle we would not be able to properly diagnose it, nor provide you with a 100% answer. We would suggest that you take your vehicle to a certified mechanic for further diagnosis.
Q:Can you provide installation instructions for replacing a FRP on a 2004 Chevy Trailblazer with in line 6 cyl engine?
A:With reference to your inquiry on the BWD Fuel Pressure Regulator -part# 23090, General Motors (GM) introduced the Chevrolet Trailblazer as an upscale version of the Blazer in 1999. The 2002 Trailblazer has a six-cylinder 4.2-liter engine with sequential fuel injection. This engine requires a fuel pressure regulator -- also known as the fuel control regulator -- to maintain the pressure in the fuel system at the correct level. Remove the cable from the negative battery terminal. Open the filler cap on the fuel tank to release the pressure in the fuel tank. Connect a fuel pressure gauge to the pressure fitting on the inlet fuel line. Place the bleed hose of the fuel gauge into a container approved for gasoline. Open the valve on the pressure gauge to relieve the pressure in the fuel system. Drain the fuel from the pressure gauge into the container, then disconnect the pressure gauge from the pressure fitting. Disconnect the outlet resonator for the air cleaner with a socket wrench. Release the retaining clips for the main wiring harness on the front of the engine, then detach the wiring harness. Remove the vacuum line from the fuel control regulator. Clean the surrounding area with a shop rag. Release the retainer on the fuel return line for the fuel control regulator, then detach the fuel return line. Release the retainer for the fuel control regulator with a socket wrench. Detach the regulator from the fuel rail. Discard the O-ring on the fuel control regulator. Install a new O-ring to the new fuel control regulator, and coat the O-ring with engine oil. Push the new fuel pressure regulator into its housing on the fuel rail. Attach the retainer for the fuel control regulator, and tighten it to 71 inch-pounds with a torque wrench. Attach the retainer for the fuel return line to the fuel control regulator. Tighten its retainer screw to 71 inch-pounds with a socket wrench. Connect the fuel return line for the fuel control regulator. Fasten the filler cap on the fuel tank, and connect the cable for the negative battery terminal with a socket wrench. Turn the ignition on for two seconds to prime the fuel system, then turn it off for 10 seconds. Turn the ignition back on and check for fuel leaks. Connect the engine wiring on the front of the engine, and attach its retaining clips. Install the resonator for the air intake. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.
Q:What are the steps to remove an old FPR and install a new? Also does this part include a new o-riing?
A:For further assistance regarding BWD Fuel Pressure Regulator, Part No. 23090, please provide the year, make, model and engine size of your vehicle. This information would help us to assist you in a better way. This part includes o-ring.