1985 Ranger Fuel Pump Wiring

[Jeepsandrangers]

I running my truck the other day and it ended up just choking itself out and dying. After a quick investigation I noticed when priming before starting I could no longer hear the high pressure pump that is mounted on the frame. But I could hear the the pump in the fuel tank.

my question is: Is the lift pump (in the gas tank) and the high pressure pump wired in parallel? I plan on checking voltage to the pump and then giving direct power to the high pressure pump to see if the issue is the pump itself. But I was curious that if, in fact, they are wired in parallel it would be a fair warning sign that the one of the fuel pumps might have an internal fault if you can still hear the other.

 

[Jeepsandrangers]

For more background, it is a 4x4 1985 Ford Ranger with a 1988 T-bird 2.3T engine in it. Was originally a naturally aspirated 2.3

 

[tw205]

I believe we had something similar post up here a couple weeks ago. One pump running with relay removed. Concluded was yes both pumps are on the same circuit. Both should run in unison.

 

[SenorNoob]

I can confirm. One circuit for both pumps. If one isn't running it's either a bad pump or broken wire.

 

[Uncle Gump]

 

[Uncle Gump]