Mazdarati3000
New Member
- Joined
- Aug 15, 2018
- Messages
- 7
- Reaction score
- 0
- Points
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- Vehicle Year
- 1996
- Make / Model
- Mazda
- Transmission
- Manual
I have a 1996 b3000 se.
I have put 5 new fuel pumps in this truck and keep getting 19-21psi of pressure.
-The pump is getting 13.5v while running
-pumps have ohm checked anywhere from .9-1.9 ohms. according to the Delphi tech this is acceptable
-new pressure regulator
-new fuel filter
-fuel pressure from pump 19, at filter 19, at reg 19
-checked all grounds to the pcm, pump,
-tested the pump with just the battery
-bypassed the inertia switch
-checked resistance from the pump connection on the hanger to the pump itself, 0 ohms
-checked we were getting min 12v through the pump connection harness as well
-fuel system holds pressure after key off.
I am fairly certain that there is no electrical issue getting power to the pump itself. And that there is no internal or external leak to the fuel system.
the only way we got 40+ psi at the shraeder was to make a restriction in the return side at the pump itself, bypassing just enough to create the 40 psi.
the 5 pumps have been various manufacturers from different part stores locally. bought as either full hanger assemblies or pumps that were swapped into different hanger assemblies.
I am at a loss for what this could be. Ford wants almost $600 for an OE hangar assembly, but I don't think this is going to fix it based on what we've already tested.
Someone, in the last 20 years of rangers has had to come across this?
Any help would be appreciated!!!!
I have put 5 new fuel pumps in this truck and keep getting 19-21psi of pressure.
-The pump is getting 13.5v while running
-pumps have ohm checked anywhere from .9-1.9 ohms. according to the Delphi tech this is acceptable
-new pressure regulator
-new fuel filter
-fuel pressure from pump 19, at filter 19, at reg 19
-checked all grounds to the pcm, pump,
-tested the pump with just the battery
-bypassed the inertia switch
-checked resistance from the pump connection on the hanger to the pump itself, 0 ohms
-checked we were getting min 12v through the pump connection harness as well
-fuel system holds pressure after key off.
I am fairly certain that there is no electrical issue getting power to the pump itself. And that there is no internal or external leak to the fuel system.
the only way we got 40+ psi at the shraeder was to make a restriction in the return side at the pump itself, bypassing just enough to create the 40 psi.
the 5 pumps have been various manufacturers from different part stores locally. bought as either full hanger assemblies or pumps that were swapped into different hanger assemblies.
I am at a loss for what this could be. Ford wants almost $600 for an OE hangar assembly, but I don't think this is going to fix it based on what we've already tested.
Someone, in the last 20 years of rangers has had to come across this?
Any help would be appreciated!!!!