sends enough fuel to start but wont stay running.......we droppedthe
gas tank, checked the fuel pump & cleaned the filter; replaced the
fuel filter, next the pressure sensor.....we are guessing ECM? any
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Turning on the key do you hear the pump turn on for a couple seconds?
Does the pump continue to run when the engine is running (toss a test
light on the pump connections and see if it is still getting power)?
What fuel pressure do you see Key on Engine off?
How about with the engine running?
When you shut off the engine does the fuel pressure stay steady or does
it drop fast?
The actual power to the pump on that vehicle is routed through the oil
pressure sender. The ECM activates the relay for 2 seconds to build
pressure. Then the engines oil pressure trips the switch and continues
to power the pump. If that switch fails the engine will start and run a
couple seconds and die.
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