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Old 06-15-2007, 10:31 PM   #1
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Default Can any one explain this one? (FIXED! Fuel Pump)

I drove my car about a 100 round trip. when i got off the express way it started surging and cut off. if i started it back up it would go until i had to slow down again then same thing. fuel pressure was reading 38psi but when you gave it gas it would drop to about five psi and shut down. let the car sit over night started did a pressure check without vacuum applied to fpr. It read about 52 psi plug the vacuum line back up i was between 39 and 43 psi but would go to about 50 psi if you hit the throttle.. could this be a bad pump that is only showing up when it gets hot or ign module? any help would be appreciated. thanks
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Old 06-16-2007, 02:04 AM   #2
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If the pressure drops that low, I'd suspect the fuel pump. The SSEis have a 2 speed pump, and perhaps the slower speed is not working as well after running for a while. Have you changed the fuel filter?
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Old 06-16-2007, 11:11 AM   #3
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forgot to mention this is a walbro fp that is about 2 years old
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Old 06-16-2007, 11:13 AM   #4
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changing fuel filter now will try to drive it hard and see what turns up once it heats up
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Old 06-17-2007, 10:35 AM   #5
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ok changed the filter. drove pretty hard it seem to work fine at first but at about 115mph it started to surge no power then pick up as if it was starving for fuel think im going to have to change the pump.
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Old 07-05-2007, 11:10 AM   #6
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replaced the pump. Seems to have solved all my problems.
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Old 07-05-2007, 12:13 PM   #7
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Great. Glad that you got it fixed...thanks for reporting back.
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