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Fuel pump issues

LordAthey

Well-known member
Joined
Aug 5, 2009
Messages
207
Location
Council Bluffs, Iowa
So I've had this issue where the fuel pump wont shut off it just keeps running. You can hear it running into the return line like its recycling it. I've changed the injectors to known good ones. I've changed the fpr to 2 known good ones and replaced the fuel pump to a walbero 255. Any ideas why it won't shut off is there a relay that im missing. The pressure is around 50 is I remember from the test. Just not sure what else could be going on.
 

toybreaker

iconoclast
Joined
Apr 30, 2006
Messages
3,581
Is the pump re-wired?

Check for this at the pump housing under the trunk carpet.

Follow the wires from the pump housing and take a pic of what you find, especially the relay configuration diagram (usually printed on the side of quality relays)
 

cheekychimp

Well-known member
Joined
Apr 19, 2004
Messages
7,333
Location
East Sussex, U.K.
Quoting LordAthey:
Is the relay in the front fuse box that is in the engine compartment.



Not necessarily!

If your pump has been rewired as suggested the relay is very likely in the trunk with the wiring. Take a look back there as Toybreaker suggested and post up the photos he asked for. If it is wired incorrectly and you post up clear photos he will very quickly be able to tell you if something is obviously wrong.
 

LordAthey

Well-known member
Joined
Aug 5, 2009
Messages
207
Location
Council Bluffs, Iowa
Ok the fuel pump is not rewired and the relay is under the glove compartment. Is it the MPI relay or fuel pump relay just want to get another one and see if the relay is the issue.
 
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