Can we make this a sticky somewhere? May not be in high demand right now, but I believe it may later. Besides, damn good info.:mullet:
HOW-TO: Adapt 12-914 255LPH Holley fuel pump to work in stock tank.
7
Since they disconinued the direct replacement 255LPH fuel pump for our trucks (Holley P/N 12-922), I've written this how to that will show how to adapt a Holly P/N 12-914 255LPH fuel pump to work in a GEN III Dakota. Hope it helps!
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- First thing to do is remove the fuel pump from the truck. Sorry, but I didn't get any pictures of this. Easiest way to get to the pump is to remove the bed off the truck rather than dropping the tank. Underneath the bed, remove (8) bolts holding the bed to the frame. Near the rear of the bed, unplug (2) wiring harnesses leading to the tail lights, one on each rear frame end. Also undo the harness at license plate light. Now, open the fuel door and remove (4) phillips screws holding the filler hose to the bed. It's best to have at least three people to help you lift the bed off the truck. One on each wheel well, and one at the rear to stabalize the bed. Lift the bed up and over the wheels and set aside.
As you can see you have very easy access to the top of the tank and the fuel pump.
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- Now you must remove the fuel line from the regulator. This is a quick disconnect hose. To remove it, push the outer connector towards the regulator. While doing this, squeeze the (2) tabs from the inner connector together. Still squeezing, pull the outer connector away from the regulator. It should pop right off. NOTE!!: Be careful when removing this connector. There is a tiny o-ring that may fall out of the outer connector. This o-ring is not available over the counter (That I could find) and so an entire new hose and connector needs to be bought if it's lost! (Ask me how I know
) Now, unplug the fuel pump harness. Next, to remove the pump itself, remove the plastic lock ring by turning it counter clockwise. You may need to break it loose by using a large flat head screwdriver and a rubber mallet. Using the tabs along the outer edge of the ring to tap it counter clockwise. Once the ring is removed, just pull the pump out of the tank. Be careful not to get anything into the tank. Make sure you cover the opening of the tank so no debris falls inside.
Here is the pump removed from the tank.
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- Once the pump has dried out a bit, the first thing to do is remove the fuel level float from the pump. First release a small black clip by gently squeezing the sides together,and pulling it out.
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- Next, using a small flat head screwdriver, gently pry up on the level between the two attaching points. Pull the level straight out and set aside.
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- To get to the pump, you must seperate the two halves of the housing. But before you try to seperate them, make sure to remove the hose from the bottom of the regulator that leads to the pump. If not, the hose will act like a spring, and will try to keep pulling the two parts back together. To remove the hose, use a tiny screwdriver or pick to pry open the hose clamp. Once the clamp is removed, carefully pull off the hose. Also make sure to unplug the wiring harness from the top of the housing.
![]()
- First thing to do is remove the fuel pump from the truck. Sorry, but I didn't get any pictures of this. Easiest way to get to the pump is to remove the bed off the truck rather than dropping the tank. Underneath the bed, remove (8) bolts holding the bed to the frame. Near the rear of the bed, unplug (2) wiring harnesses leading to the tail lights, one on each rear frame end. Also undo the harness at license plate light. Now, open the fuel door and remove (4) phillips screws holding the filler hose to the bed. It's best to have at least three people to help you lift the bed off the truck. One on each wheel well, and one at the rear to stabalize the bed. Lift the bed up and over the wheels and set aside.
As you can see you have very easy access to the top of the tank and the fuel pump.
- Now you must remove the fuel line from the regulator. This is a quick disconnect hose. To remove it, push the outer connector towards the regulator. While doing this, squeeze the (2) tabs from the inner connector together. Still squeezing, pull the outer connector away from the regulator. It should pop right off. NOTE!!: Be careful when removing this connector. There is a tiny o-ring that may fall out of the outer connector. This o-ring is not available over the counter (That I could find) and so an entire new hose and connector needs to be bought if it's lost! (Ask me how I know
) Now, unplug the fuel pump harness. Next, to remove the pump itself, remove the plastic lock ring by turning it counter clockwise. You may need to break it loose by using a large flat head screwdriver and a rubber mallet. Using the tabs along the outer edge of the ring to tap it counter clockwise. Once the ring is removed, just pull the pump out of the tank. Be careful not to get anything into the tank. Make sure you cover the opening of the tank so no debris falls inside.Here is the pump removed from the tank.
- Once the pump has dried out a bit, the first thing to do is remove the fuel level float from the pump. First release a small black clip by gently squeezing the sides together,and pulling it out.
- Next, using a small flat head screwdriver, gently pry up on the level between the two attaching points. Pull the level straight out and set aside.
- To get to the pump, you must seperate the two halves of the housing. But before you try to seperate them, make sure to remove the hose from the bottom of the regulator that leads to the pump. If not, the hose will act like a spring, and will try to keep pulling the two parts back together. To remove the hose, use a tiny screwdriver or pick to pry open the hose clamp. Once the clamp is removed, carefully pull off the hose. Also make sure to unplug the wiring harness from the top of the housing.
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