fuel delivery problems

85 pontiac Fiero G.T. 2.8 L 206k miles with a new fuel pump. when driving the vehicle the fuel pump makes a humming noise, but will get real quiet and then the engine acts as if it is starving for gas if i turn the ignition off and let the car coast for 10 or 15 seconds and then restart the engine the fuel pump gets loud again and the engine has power again.

any help would be appreciated

Reply to
Wheelman
Loading thread data ...

Check inline fuel filter. If OK pull pump and check inlet sock. Might be a good idea to put a test lamp across the power leads to the pump and see if there is still power to the pump when it "goes quiet" If there is power and both filters are good, replace the pump while you have it out. Brushes on the pump motor could be all "used up" at

206K miles.
Reply to
clare

^^^^^^^^^^^^^^^^^

Reply to
aarcuda69062

Fuel pumps can fail after 500 miles or after 500, 000 miles. They are very unpredictable that way.

Tom S.

Reply to
Tom S.

OPS. Was the problem the same before the pump was replaced? Check the power situation and if the power goes out check the oil pressure safety switch that is supposed to shut the engine down on low oil pressure. Make sure you HAVE oil pressure - then replace the switch (ofter checking for bad connections)

Reply to
clare

They can also be no good out of the box -

Reply to
clare

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.