Gen 2 Fuel pump and tank into a Gen 1

echo · Feb 22, 2013

I've got one of those 87 with the 2 fuel pump systems and the high pressure pump is gone. I was offered the pump and tank from a gen 2 truck that had been rolled over. Did some checking, my 87 pump runs at 90-100 psi. The gen 2 pump runs 89 psi. Since the 2 tank pumps are quite different is shape the idea was to replace my entire tank with the one from the gen 2, replace my high pressure pump with fuel line and just run the one pump. Has anyone tired this before? Both being V6 trucks could this work? Worried about starving my engine of fuel. This would also bypass why there is no signal at the high pressure pump on my truck but there is at the tank pump. Brand new to this site and rangers so I hope I can find some insight here. :dunno:

Psychopete · Feb 24, 2013

yeah, the intank pump setup from the gen-2 will work as far as feeding the engine fuel. filler tube is different, straps might be(?). ohms for the fuel gauge sending unit might be different, too. But could observe while both tanks are out of the truck. probably will want to take the frame mounted canister out of the loop.

Psychopete · Feb 24, 2013

echo said:
This would also bypass why there is no signal at the high pressure pump on my truck but there is at the tank pump.

Missed this earlier - no power to the high pressure pump ?? on my '88, there was only 1 wire that ran both pumps with a connector right down kinda by driver's side frame rail (12v+ after inertia switch). where did you ground your meter?

echo · Feb 27, 2013

I have a separate connector near the trans mount for my high pressure pump. Grounded it both through the harness and the frame and no signal. The pump swap from the gen 2 seems to have worked so far. Instead of swapping tanks or sender units I simply took the high pressure pump off the gen 2 sender unit using it in place of my low pressure pump. Put it all back together, some fuel hose in replace of my high pressure pump. Primed it 3 times by turning the ignition off an on then it fired right up. Need to take it for a good highway run with some hills to know for sure that it will keep up. But so far so good.

Psychopete · Feb 28, 2013

thanks for the update and keep us posted how it works out, could save someone a lot of hassle down the road.

echo · Mar 13, 2013

Success! The gen 2 in tank high pressure pump runs my gen 1 2.9 just fine. Simply pull the low pressure pump off my sender unit and replaced it with the high pressure pump.from the gen 2 sender unit. Needed to change the wire contacts to the motor and shorten the rubber connection hose but that was it. Dropped my sender with the new pump back into the tank and filled the space from removing the inline pump with fuel hose. Truck fired right up handles a torque load, 4x4ing and will pull 120 on the highway. No lag at all.

werewolf · Nov 20, 2016

sounds good

Sounds good the gen-2 pump will work. What year is gen-2, 92 or 95.

adsm08 · Nov 21, 2016

werewolf said:
Sounds good the gen-2 pump will work. What year is gen-2, 92 or 95.

89

Gen 2 Fuel pump and tank into a Gen 1

echo

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Psychopete

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Psychopete

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echo

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