Thread: L300 Fuel Pump
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Old 05-19-2011, 08:52 AM   #4
fdryer
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Join Date: Jan 2006
Location: NYC
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2003 L-Series 3.0L Sedan
Default Re: L300 Fuel Pump

114k miles isn't a lot for fuel pumps. Phone support might need specific instructions just like what we ask here.

Turn ON the ignition and listen for the faint hum/hiss of the fuel pump running for 2-3 seconds until it shuts off automatically (safety). This can be done as many times as necessary but wait at least 30 seconds between ignition cycling to hear the pump running. Another check for fuel pump operation and pressure would be to open the hood and locate the fuel rail (over the middle part of the engine) where the fuel test valve is capped by a black plastic cap, remove it and depress the valve stem (same as the tire valve) expecting a healthy spray of fuel. You should cover the valve loosely with a rag.

If no fuel pump sounds or fuel sprays out the test valve, look for a blown fuel pump fuse, labeled in the fuse panel.

Be aware that if this isn't a fuel issue then it may be ignition/spark related.
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