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Fuel pump has no power

Old Oct 9, 2009 | 02:36 PM
  #1  
88wright's Avatar
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Joined: Nov 2007
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Default Fuel pump has no power

1988 Ford Ranger, 2.3 L, 5 speed, long bed, regular cab, mid mount fuel tank.
I was driving along and the engine stopped.
No hum from the fuel pump when turning key on.
I pulled the pump and tested it on a battery,it runs.
I tested the fuel pump plug with a meter, no voltage..
I checked the fuse, ok.
I replaced the green and black relays on the passenger side fender well with junk yard parts. Still nothing.
I cleaned the battery terminal connections. They are after market lead type.
The high pressure pump on the frame was new about 3 years ago.
Which pump makes the hum when the key is on?
Any ideas are greatly appreciated!
 
Old Oct 24, 2009 | 01:02 AM
  #2  
wes029's Avatar
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Joined: Oct 2009
Posts: 6
Default

When you turn the key to the on postion both pumps will momentarily run to build pressure. The rangers have an Inertia fuel cut off switch. On most rangers that I have delt with they are located on the passenger side just under the edge of the carpet where the "hump" is... Check and make sure that the switch didnt "trip" for some reason... If you were making a fast turn, or driving wild that could trip the switch. They have been known to trip for no reason though!!! Check it and lemme know what you find!
 
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